CN111073629B - Perovskite quantum dot-polymer film and light-emitting device - Google Patents

Perovskite quantum dot-polymer film and light-emitting device Download PDF

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CN111073629B
CN111073629B CN201811227355.9A CN201811227355A CN111073629B CN 111073629 B CN111073629 B CN 111073629B CN 201811227355 A CN201811227355 A CN 201811227355A CN 111073629 B CN111073629 B CN 111073629B
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quantum dot
perovskite quantum
polymer film
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CN111073629A (en
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徐晓波
马卜
王允军
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Suzhou Xingshuo Nanotech Co Ltd
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    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/66—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing germanium, tin or lead
    • C09K11/664—Halogenides
    • C09K11/665—Halogenides with alkali or alkaline earth metals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
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Abstract

The application discloses a perovskite quantum dot-polymer film and a light emitting device. The perovskite quantum dot-polymer film comprises perovskite quantum dots and a polymer matrix, wherein the perovskite quantum dots are dispersed in the polymer matrix; the thickness of the perovskite quantum dot-polymer film is recorded as L; the emission peak-to-peak wavelength of the perovskite quantum dot-polymer film under blue light excitation is marked as lambda; in the case where L is 30 micrometers or more and 100 micrometers or less, λ and L exhibit positive correlation.

Description

Perovskite quantum dot-polymer film and light-emitting device
Technical Field
The application relates to the field of luminescent materials, in particular to a perovskite quantum dot-polymer film and a luminescent device.
Background
Perovskite quantum dots are one of the research hot spots in the field of semiconductor luminescent materials because of their excellent optical properties such as easy tuning of luminescence, narrow emission line, high quantum efficiency and the like. Perovskite quantum dots show great application prospects in the next generation of display fields.
A light emitting device based on perovskite quantum dots used as a backlight unit of a liquid crystal display may emit white light. White light can be built by a combination of blue light emitting diodes and phosphor or perovskite quantum dots, which requires perovskite quantum dots with appropriate emission peaks. Finding a perovskite quantum dot intermediate product with a required emission peak value has important significance for the application of the perovskite quantum dot.
Disclosure of Invention
The object of the present application is to provide a perovskite quantum dot-polymer film.
According to a first aspect of the present application there is provided a perovskite quantum dot-polymer film comprising perovskite quantum dots and a polymer matrix, the perovskite quantum dots being dispersed in the polymer matrix; the thickness of the perovskite quantum dot-polymer film is recorded as L; the emission peak-to-peak wavelength of the perovskite quantum dot-polymer film under blue light excitation is marked as lambda; in the case where L is 30 micrometers or more and 100 micrometers or less, λ and L exhibit positive correlation.
Further, λ and L exhibit positive correlation in the case where L is 20 micrometers or more and 200 micrometers or less.
Further, λ and L exhibit positive correlation in the case where L is 10 micrometers or more and 400 micrometers or less.
Further, the perovskite quantum dot is a compound represented by chemical formula 1:
chemical formula 1: [ A ]][B][X] 3 Wherein, in chemical formula 1,
a is at least one monovalent organic cation, at least one monovalent inorganic cation, or any combination thereof,
b is at least one divalent inorganic cation, and
x is at least one monovalent anion.
Further, A is (R 1 R 2 R 3 C) + 、(R 1 R 2 R 3 R 4 N) + 、(R 1 R 2 R 3 R 4 P) + 、(R 1 R 2 R 3 R 4 As) + 、(R 1 R 2 R 3 R 4 Sb) + 、(R 1 R 2 N＝C(R 3 )-NR 4 R 5 ) + Substituted or unsubstituted cycloheptatriene, substituted or unsubstituted monovalent cation of nitrogen-containing five-membered ring, substituted or unsubstituted monovalent cation of nitrogen-containing six-membered ring, li + 、Na + 、K + 、Rb + 、Cs + 、Fr + Or any combination thereof,
R 1 to R 5 Each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, substituted or unsubstituted C 1 -C 60 Alkyl, substituted or unsubstituted C 2-C60 Alkenyl, substituted or unsubstituted C 2 -C 60 Alkynyl, substituted or unsubstituted C 1 -C 60 Alkoxy, substituted or unsubstituted C 6 -C 60 Aryl or-N (Q) 1 )(Q 2 )，
At least one substituent of the substituted cycloheptatriene, the monovalent cation of the substituted nitrogen-containing five-membered ring and the monovalent cation of the substituted nitrogen-containing six-membered ring is selected from deuterium, -F, -Cl, -Br, -I, hydroxy, substituted or unsubstituted C 1 -C 60 Alkyl, substituted or unsubstituted C 2 -C 60 Alkenyl, substituted or unsubstituted C 2 -C 60 Alkynyl, substituted or unsubstituted C 1 -C 60 Alkoxy, substituted or unsubstituted C 6 -C 60 Aryl or-N (Q) 3 )(Q 4 ) And (2) and
Q 1 to Q 4 Each independently selected from hydrogen, deuterium, hydroxy, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy or C 6 -C 60 Aryl groups.
Further, A is (NH 4 ) + 、(PH 4 ) + 、(AsH 4 ) + 、(SbH 4 ) + 、(NF 4 ) + 、(PF 4 ) + 、(NCl 4 ) + 、(PCl 4 ) + 、(CH 3 NH 3 ) + 、(CH 3 PH 3 ) + 、(CH 3 AsH 3 ) + 、(CH 3 SbH 3 ) + 、((CH 3 ) 2 NH 2 ) + 、((CH 3 ) 2 PH 2 ) + 、((CH 3 ) 2 AsH 2 ) + 、((CH 3 ) 2 SbH 2 ) + 、((CH 3 ) 3 NH) + 、((CH 3 ) 3 PH) + 、((CH 3 ) 3 AsH) + 、((CH 3 ) 3 SbH) + 、((CH 3 CH 2 )NH 3 ) + 、((CH 3 CH 2 )PH 3 ) + 、((CH 3 CH 2 )AsH 3 ) + 、((CH 3 CH 2 )SbH 3 ) + 、(CH 2 N 2 H 4 ) + 、(C 7 H 7 ) + 、(NH 3 OH) + 、(NH 3 NH 2 ) + 、((CH 2 ) 3 NH 2 ) + 、(CH(NH 2 ) 2 ) + 、(C 3 N 2 H 5 ) + 、(NC 4 H 8 ) + 、((NH 2 ) 3 C) + 、K + 、Rb + 、Cs + Or any combination thereof.
Further, B is a divalent cation of a rare earth metal, a divalent cation of an alkaline earth metal, a divalent cation of a transition metal, a divalent cation of a post-transition metal, or any combination thereof.
Further, B is La 2+ 、Ce 2+ 、Pr 2+ 、Nd 2+ 、Pm 2+ 、Eu 2+ 、Gd 2+ 、Tb 2+ 、Ho 2+ 、Er 2+ 、Tm 2+ 、Yb 2+ 、Lu 2+ 、Be 2+ 、Mg 2+ 、Ca 2+ 、Sr 2+ 、Ba 2+ 、Ra 2+ 、Pb 2+ 、Sn 2+ Or any combination thereof.
Further, X is at least one halide anion.
According to another aspect of the present application, there is provided a light emitting device comprising a light source and a light conversion layer comprising the perovskite quantum dot-polymer film as described above; the perovskite quantum dot-polymer film absorbs at least a portion of the light emitted by the light source and emits light having a wavelength range different from the wavelength range of the absorbed light.
The application has the following beneficial effects: the perovskite quantum dot-polymer film emission peak wavelength lambda and the thickness of the perovskite quantum dot-polymer film are recorded as L to show good positive correlation. The perovskite quantum dot-polymer film with the preset wavelength can be obtained by changing the value of the thickness L, so that the perovskite quantum dot-polymer film can be particularly conveniently applied to backlight units (BLU) of liquid crystal display devices, indoor or outdoor illumination, stage illumination or decorative illumination.
Drawings
Fig. 1 and 2 are schematic views of the structure of a light emitting device according to an exemplary embodiment of the present application.
Detailed Description
The technical solutions in the examples of the present application will be described in detail below in conjunction with the implementation manners of the present application. It should be noted that the described embodiments are only some embodiments of the present application, and not all embodiments.
According to some exemplary embodiments of the present application, there is provided a perovskite quantum dot-polymer film comprising perovskite quantum dots and a polymer matrix, the perovskite quantum dots being dispersed in the polymer matrix; the thickness of the perovskite quantum dot-polymer film is noted as L; the emission peak-to-peak wavelength of the perovskite quantum dot-polymer film under the excitation of blue light is marked as lambda; in the case where L is 30 micrometers or more and 100 micrometers or less, λ and L exhibit positive correlation. L is preferably 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100 microns.
When lambda and L show positive correlation, lambda increases with the increase of L; as L decreases, λ also decreases. That is, the two variables change in the same direction, and when one variable changes from large to small or from small to large, the other variable also changes from large to small or from small to large. Thus, the thickness L of the perovskite quantum dot-polymer film can be simply changed while the same perovskite quantum dot, the same component content and the same polymer matrix are maintained, and the peak-to-peak wavelength lambda of the perovskite quantum dot-polymer film can be adjusted.
As used herein, the term "perovskite" refers to a compound having a perovskite crystal structure. Perovskite crystal structure means corresponding to CaTiO 3 A three-dimensional (3D) crystal structure of the crystal structure of (a). The term "quantum dot" is a three-dimensional structure with dimensions of less than 100 nmNano particles of rice.
According to some exemplary embodiments of the present application, there is provided a perovskite quantum dot-polymer film comprising perovskite quantum dots and a polymer matrix, the perovskite quantum dots being dispersed in the polymer matrix; the thickness of the perovskite quantum dot-polymer film is noted as L; the emission peak-to-peak wavelength of the perovskite quantum dot-polymer film under the excitation of blue light is marked as lambda; in the case where L is 20 micrometers or more and 200 micrometers or less, λ and L exhibit positive correlation. L is preferably 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200 microns.
According to some exemplary embodiments of the present application, there is provided a perovskite quantum dot-polymer film comprising perovskite quantum dots and a polymer matrix, the perovskite quantum dots being dispersed in the polymer matrix; the thickness of the perovskite quantum dot-polymer film is noted as L; the emission peak-to-peak wavelength of the perovskite quantum dot-polymer film under the excitation of blue light is marked as lambda; in the case where L is 10 micrometers or more and 400 micrometers or less, λ and L exhibit positive correlation. L is preferably 10 microns, 50 microns, 100 microns, 200 microns, 300 microns, 400 microns.
Perovskite quantum dots are compounds represented by chemical formula 1, chemical formula 1: [ A ]][B][X] 3 . Wherein in chemical formula 1, a is at least one monovalent organic cation, at least one monovalent inorganic cation, or any combination thereof, B is at least one divalent inorganic cation, and X is at least one monovalent anion.
In some exemplary embodiments of the present application, in chemical formula 1, a is (R 1 R 2 R 3 C) + 、(R 1 R 2 R 3 R 4 N) + 、(R 1 R 2 R 3 R 4 P) + 、(R 1 R 2 R 3 R 4 As) + 、(R 1 R 2 R 3 R 4 Sb) + 、(R 1 R 2 N＝C(R 3 )-NR 4 R 5 ) + Substituted or unsubstituted cycloheptatriene, substituted or unsubstituted monovalent cation of nitrogen-containing five-membered ring, substituted or unsubstituted monovalent cation of nitrogen-containing six-membered ring, li + 、Na + 、K + 、Rb + 、Cs + 、Fr + Or any combination thereof.
R 1 To R 5 Each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, substituted or unsubstituted C 1 -C 60 Alkyl, substituted or unsubstituted C 2 -C 60 Alkenyl, substituted or unsubstituted C 2 -C 60 Alkynyl, substituted or unsubstituted C 1 -C 60 Alkoxy, substituted or unsubstituted C 6 -C 60 Aryl or-N (Q) 1 )(Q 2 )。
At least one substituent of the substituted cycloheptatriene, the monovalent cation of the substituted nitrogen-containing five-membered ring and the monovalent cation of the substituted nitrogen-containing six-membered ring is selected from deuterium, -F, -Cl, -Br, -I, hydroxy, substituted or unsubstituted C 1 -C 60 Alkyl, substituted or unsubstituted C 2 -C 60 Alkenyl, substituted or unsubstituted C 2 -C 60 Alkynyl, substituted or unsubstituted C 1 -C 60 Alkoxy, substituted or unsubstituted C 6 -C 60 Aryl or-N (Q) 3 )(Q 4 ) And Q is 1 To Q 4 Each independently selected from hydrogen, deuterium, hydroxy, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy or C 6 -C 60 Aryl groups.
As used herein, the phrases "nitrogen-containing five-membered ring" and "nitrogen-containing six-membered ring" refer to an organic cyclic group comprising at least one nitrogen (N) and at least one carbon (C) atom as ring forming atoms.
For example, the "nitrogen-containing five-membered ring" group may be imidazole, pyrazole, thiazole, oxazole, pyrrolidine, pyrroline, pyrrole or triazole, and the "nitrogen-containing six-membered ring" group may be pyridine, pyridazine, pyrimidine, pyrazine or piperidine. However, the exemplary embodiments of the present application are not limited thereto.
For example, in chemical formula 1, a may be (R 1 R 2 R 3 C) + 、(R 1 R 2 R 3 R 4 N) + 、(R 1 R 2 R 3 R 4 P) + 、(R 1 R 2 R 3 R 4 As) + 、(R 1 R 2 R 3 R 4 Sb) + 、(R 1 R 2 N＝C(R 3 )-NR 4 R 5 ) + Substituted or unsubstituted cycloheptatriene, substituted or unsubstituted imidazole, substituted or unsubstituted pyridine, substituted or unsubstituted pyridazine, substituted or unsubstituted pyrimidine, substituted or unsubstituted pyrazine, substituted or unsubstituted pyrazole, substituted or unsubstituted thiazole, substituted or unsubstituted oxazole, substituted or unsubstituted piperidine, substituted or unsubstituted pyrrolidine, substituted or unsubstituted pyrroline, substituted or unsubstituted pyrrole, substituted or unsubstituted triazole, li + 、Na + 、K + 、Rb + 、Cs + 、Fr + Or any combination thereof.
R 1 To R 5 Each independently selected from: hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, C 1 -C 20 Alkyl or C 1 -C 20 An alkoxy group; c each substituted with at least one selected from the group consisting of 1 -C 20 Alkyl and C 1 -C 20 An alkoxy group: deuterium, -F, -Cl, -Br, -I, or hydroxy; phenyl, naphthyl, biphenyl or terphenyl; phenyl, naphthyl, biphenyl and terphenyl each substituted with at least one selected from the group consisting of: deuterium, -F, -Cl, -Br, -I, hydroxy, C 1 -C 20 Alkyl or C 1 -C 20 An alkoxy group; -N (Q) 1 )(Q 2 )。
At least one substituent of the substituted cycloheptatriene, at least one substituent of the substituted imidazole, at least one substituent of the substituted pyridine, at least one substituent of the substituted pyridazine, at least one substituent of the substituted pyrimidine, at least one substituent of the substituted pyrazineA substituent, at least one substituent of the substituted pyrazole, at least one substituent of the substituted thiazole, at least one substituent of the substituted oxazole, at least one substituent of the substituted piperidine, at least one substituent of the substituted pyrrolidine, at least one substituent of the substituted pyrroline, at least one substituent of the substituted pyrrole and at least one substituent of the substituted triazole may be selected from the group consisting of: deuterium, -F, -Cl, -Br, -I, hydroxy, C 1 -C 20 Alkyl or C 1 -C 20 An alkoxy group; c each substituted with at least one selected from the group consisting of 1 -C 20 Alkyl and C 1 -C 20 An alkoxy group: deuterium, -F, -Cl, -Br, -I, or hydroxy; phenyl, naphthyl, biphenyl or terphenyl; phenyl, naphthyl, biphenyl and terphenyl each substituted with at least one selected from the group consisting of: deuterium, -F, -Cl, -Br, -I, hydroxy, C 1 -C 20 Alkyl or C 1 -C 20 An alkoxy group; -N (Q) 3 )(Q 4 )。
Q 1 To Q 4 Can be independently selected from hydrogen, deuterium, hydroxy and C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, phenyl, naphthyl, biphenyl or terphenyl.
In some exemplary embodiments of the present application, in chemical formula 1, a may be (R 1 R 2 R 3 R 4 N) + 、(R 1 R 2 R 3 R 4 P) + 、(R 1 R 2 R 3 R 4 As) + 、(R 1 R 2 R 3 R 4 Sb) + 、Li + 、Na + 、K + 、Rb + 、Cs + 、Fr + Or any combination thereof. R is R 1 To R 4 Can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy and C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy or-N (Q) 1 )(Q 2 )。Q 1 And Q 2 Can be independently selected from hydrogen, deuterium, hydroxy and C 1 -C 20 Alkyl or C 1 -C 20 An alkoxy group.
In some exemplary embodiments of the present application, in chemical formula 1, a may be (R 1 R 2 R 3 R 4 N) + 、K + 、Rb + 、Cs + Or any combination thereof. R is R 1 To R 4 Can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy and C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy or-N (Q) 1 )(Q 2 )。Q 1 And Q 2 Can be independently selected from hydrogen, deuterium, hydroxy and C 1 -C 20 Alkyl or C 1 -C 20 An alkoxy group.
In some exemplary embodiments of the present application, in chemical formula 1, a is (NH 4 ) + 、(PH 4 ) + 、(AsH 4 ) + 、(SbH 4 ) + 、(NF 4 ) + 、(PF 4 ) + 、(NCl 4 ) + 、(PCl 4 ) + 、(CH 3 NH 3 ) + 、(CH 3 PH 3 ) + 、(CH 3 AsH 3 ) + 、(CH 3 SbH 3 ) + 、((CH 3 ) 2 NH 2 ) + 、((CH 3 ) 2 PH 2 ) + 、((CH 3 ) 2 AsH 2 ) + 、((CH 3 ) 2 SbH 2 ) + 、((CH 3 ) 3 NH) + 、((CH 3 ) 3 PH) + 、((CH 3 ) 3 AsH) + 、((CH 3 ) 3 SbH) + 、((CH 3 CH 2 )NH 3 ) + 、((CH 3 CH 2 )PH 3 ) + 、((CH 3 CH 2 )AsH 3 ) + 、((CH 3 CH 2 )SbH 3 ) + 、(CH 2 N 2 H 4 ) + 、(C 7 H 7 ) + 、(NH 3 OH) + 、(NH 3 NH 2 ) + 、((CH 2 ) 3 NH 2 ) + 、(CH(NH 2 ) 2 ) + 、(C 3 N 2 H 5 ) + 、(NC 4 H 8 ) + 、((NH 2 ) 3 C) + 、K + 、Rb + 、Cs + Or any combination thereof. However, the exemplary embodiments of the present application are not limited thereto.
In chemical formula 1, B may be at least one divalent inorganic cation. For example, B in chemical formula 1 may be one divalent inorganic cation or a combination of at least two different divalent inorganic cations.
In some exemplary embodiments of the present application, B may be a divalent cation of a rare earth metal, a divalent cation of an alkaline earth metal, a divalent cation of a transition metal, a divalent cation of a post-transition metal, or any combination thereof. For example, B may be La 2+ 、Ce 2+ 、Pr 2+ 、Nd 2+ 、Pm 2+ 、Eu 2+ 、Gd 2+ 、Tb 2+ 、Ho 2+ 、Er 2+ 、Tm 2+ 、Yb 2+ 、Lu 2+ 、Be 2+ 、Mg 2+ 、Ca 2+ 、Sr 2+ 、Ba 2 + 、Ra 2+ 、Pb 2+ 、Sn 2+ Or any combination thereof.
In some exemplary embodiments of the present application, B may be Tm 2+ The method comprises the steps of carrying out a first treatment on the surface of the And La (La) 2+ 、Ce 2+ 、Pr 2+ 、Nd 2+ 、Pm 2+ 、Eu 2+ 、Gd 2+ 、Tb 2+ 、Ho 2+ 、Er 2+ 、Yb 2+ 、Lu 2+ 、Be 2+ 、Mg 2+ 、Ca 2+ 、Sr 2+ 、Ba 2+ 、Ra 2+ 、Pb 2+ 、Sn 2+ Or any combination thereof. However, the exemplary embodiments of the present application are not limited thereto.
In chemical formula 1, X may be at least one monovalent anion. For example, X can be one monovalent anion or a combination of at least two different monovalent anions.
In some exemplary embodiments of the present application, in chemical formula 1, X may be at least one halogen anion, e.g., F-, cl-, br-, or I-. For example, X in formula 1 may be at least one halide anion or a combination of at least two different halide anions.
In some exemplary embodiments of the present application, X in chemical formula 1 may be an iodide ion (I-). However, the exemplary embodiments of the present application are not limited thereto.
In some exemplary embodiments of the present application, the perovskite compound of chemical formula 1 may be selected from [ CH ] 3 NH 3 ][Pb][I] 3 、[CH 3 NH 3 ][Pb n Sr (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Mg (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Ca (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Ba (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Eu (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Yb (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Tm (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n La (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Ce (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Pr (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Nd (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Pm (1-n) ][I] 3 、[CH 3 NH 3 ][PbnGd (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Tb (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Ho (1-n) ][I] 3 、[CH 3 NH 3 ][Pb n Er (1-n) ][I] 3 、[Cs][Pb][I] 3 、[Cs][Pb n Sr (1-n) ][I] 3 、[Cs][Pb n Mg (1-n) ][I] 3 、[Cs][Pb n Ca (1-n) ][I] 3 、[Cs][Pb n Ba (1-n) ][I] 3 、[Cs][Pb n Eu (1-n) ][I] 3 、[Cs][Pb n Yb (1-n) ][I] 3 、[Cs][Pb n Tm (1-n) ][I]] 3 、[Cs][Pb n La (1-n) ][I] 3 、[Cs][Pb n Ce (1-n) ][I] 3 、[Cs][Pb n Pr (1-n) ][I] 3 、[Cs][Pb n Nd (1-n) ][I] 3 、[Cs][Pb n Pm (1-n) ][I] 3 、[Cs][Pb n Gd (1-n) ][I] 3 、[Cs][Pb n Tb (1-n) ][I] 3 、[Cs][Pb n Ho (1-n) ][I] 3 、[Cs][Pb n Er (1-n) ][I] 3 、[Rb][Pb][I] 3 、[Rb][Pb n Sr (1-n) ][I] 3 、[Rb][Pb n Mg (1-n) ][I] 3 、[Rb][Pb n Ca (1-n) ][I] 3 、[Rb][Pb n Ba (1-n) ][I] 3 、[Rb][Pb n Eu (1-n) ][I] 3 、[Rb][Pb n Yb (1-n) ][I] 3 、[Rb][Pb n Tm (1-n) ][I] 3 、[Rb][Pb n La (1-n) ][I] 3 、[Rb][Pb n Ce (1-n) ][I] 3 、[Rb][Pb n Pr (1-n) ][I] 3 、[Rb][Pb n Nd (1-n) ][I] 3 、[Rb][Pb n Pm (1-n) ][I] 3 、[Rb][Pb n Gd (1-n) ][I] 3 、[Rb][Pb n Tb (1-n) ][I] 3 、[Rb][Pb n Ho (1-n) ][I] 3 、[Rb][Pb n Er (1-n) ][I] 3 、[K][Pb][I] 3 、[K][Pb n Sr (1-n) ][I] 3 、[K][Pb n Mg (1-n) ][I] 3 、[K][Pb n Ca (1-n) ][I] 3 、[K][Pb n Ba (1-n) ][I] 3 、[K][Pb n Eu (1-n) ][I] 3 、[K][Pb n Yb (1-n) ][I] 3 、[K][Pb n Tm (1-n) ][I] 3 、[K][Pb n La (1-n) ][I] 3 、[K][Pb n Ce (1-n) ][I] 3 、[K][Pb n Pr (1-n) ][I] 3 、[K][Pb n Nd (1-n) ][I] 3 、[K][Pb n Pm (1-n) ][I] 3 、[K][Pb n Gd (1-n) ][I] 3 、[K][Pb n Tb (1-n) ][I] 3 、[K][Pb n Ho (1-n) ][I] 3 、[K][Pb n Er (1-n) ][I] 3 、[CH 3 NH 3 ][Tm][I] 3 、[CH 3 NH 3 ][Tm n Sr (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n Mg (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n Ca (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n Ba (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n Eu (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n Yb (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n La (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n Ce (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n Pr (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n Nd (1-n)] [I] 3 、[CH 3 NH 3 ][Tm n Pm (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n Gd (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n Tb (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n Ho (1-n) ][I] 3 、[CH 3 NH 3 ][Tm n Er (1-n) ][I] 3 、[Cs][Tm][I] 3 、[Cs][Tm n Sr (1-n) ][I] 3 、[Cs][Tm n Mg (1-n) ][I] 3 、[Cs][Tm n Ca (1-n) ][I] 3 、[Cs][Tm n Ba (1-n) ][I] 3 、[Cs][Tm n Eu (1-n) ][I] 3 、[Cs][Tm n Yb (1-n) ][I] 3 、[Cs][Tm n La (1-n) ][I] 3 、[Cs][Tm n Ce (1-n) ][I] 3 、[Cs][Tm n Pr (1-n) ][I] 3 、[Cs][Tm n Nd (1-n) ][I] 3 、[Cs][Tm n Pm (1-n) ][I] 3 、[Cs][Tm n Gd (1-n) ][I] 3 、[Cs][Tm n Tb (1-n) ][I] 3 、[Cs][Tm n Ho (1-n) ][I] 3 、[Cs][Tm n Er (1-n) ][I] 3 Or any combination thereof.
In some exemplary embodiments of the present application, n may be a real number satisfying the condition 0< n < 1. For example, n may be a real number satisfying the condition 0<n.ltoreq.0.6. In some exemplary embodiments of the present application, n may be a real number satisfying the condition 0.001+.n+.0.6. In some exemplary embodiments of the present application, n may be a real number satisfying the condition 0.05+.n+.0.4. However, the exemplary embodiments of the present application are not limited thereto.
In some exemplary embodiments of the present application, X in chemical formula 1 may be a bromide ion (Br-). However, the exemplary embodiments of the present application are not limited thereto.
In some exemplary embodiments of the present application, the perovskite compound of chemical formula 1 may be selected from [ CH ] 3 NH 3 ][Pb][Br] 3 、[CH 3 NH 3 ][Pb n Sr (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Mg (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Ca (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Ba (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Eu (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Yb (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Tm (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n La (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Ce (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Pr (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Nd (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Pm (1-n) ][Br] 3 、[CH 3 NH 3 ][PbnGd (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Tb (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Ho (1-n) ][Br] 3 、[CH 3 NH 3 ][Pb n Er (1-n) ][Br] 3 、[Cs][Pb][Br] 3 、[Cs][Pb n Sr (1-n) ][Br] 3 、[Cs][Pb n Mg (1-n) ][Br] 3 、[Cs][Pb n Ca (1-n) ][Br] 3 、[Cs][Pb n Ba (1-n) ][Br] 3 、[Cs][Pb n Eu (1-n) ][Br] 3 、[Cs][Pb n Yb (1-n) ][Br] 3 、[Cs][Pb n Tm (1-n) ][Br]] 3 、[Cs][Pb n La (1-n) ][Br] 3 、[Cs][Pb n Ce (1-n) ][Br] 3 、[Cs][Pb n Pr (1-n) ][Br] 3 、[Cs][Pb n Nd (1-n) ][Br] 3 、[Cs][Pb n Pm (1-n) ][Br] 3 、[Cs][Pb n Gd (1-n) ][Br] 3 、[Cs][Pb n Tb (1-n) ][Br] 3 、[Cs][Pb n Ho (1-n) ][Br] 3 、[Cs][Pb n Er (1-n) ][Br] 3 、[Rb][Pb][Br] 3 、[Rb][Pb n Sr (1-n) ][Br] 3 、[Rb][Pb n Mg (1-n) ][Br] 3 、[Rb][Pb n Ca (1-n) ][Br] 3 、[Rb][Pb n Ba (1-n) ][Br] 3 、[Rb][Pb n Eu (1-n) ][Br] 3 、[Rb][Pb n Yb (1-n) ][Br] 3 、[Rb][Pb n Tm (1-n) ][Br] 3 、[Rb][Pb n La (1-n) ][Br] 3 、[Rb][Pb n Ce (1-n) ][Br] 3 、[Rb][Pb n Pr (1-n) ][Br] 3 、[Rb][Pb n Nd (1-n) ][Br] 3 、[Rb][Pb n Pm (1-n) ][Br] 3 、[Rb][Pb n Gd (1-n) ][Br] 3 、[Rb][Pb n Tb (1-n) ][Br] 3 、[Rb][Pb n Ho (1-n) ][Br] 3 、[Rb][Pb n Er (1-n) ][Br] 3 、[K][Pb][Br] 3 、[K][Pb n Sr (1-n) ][Br] 3 、[K][Pb n Mg (1-n) ][Br] 3 、[K][Pb n Ca (1-n) ][Br] 3 、[K][Pb n Ba (1-n) ][Br] 3 、[K][Pb n Eu (1-n) ][Br] 3 、[K][Pb n Yb (1-n) ][Br] 3 、[K][Pb n Tm (1-n) ][Br] 3 、[K][Pb n La (1-n) ][Br] 3 、[K][Pb n Ce (1-n) ][Br] 3 、[K][Pb n Pr (1-n) ][Br] 3 、[K][Pb n Nd (1-n) ][Br] 3 、[K][Pb n Pm (1-n) ][Br] 3 、[K][Pb n Gd (1-n) ][Br] 3 、[K][Pb n Tb (1-n) ][Br] 3 、[K][Pb n Ho (1-n) ][Br] 3 、[K][Pb n Er (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm][Br] 3 、[CH 3 NH 3 ][Tm n Sr ( 1 -n) ][Br] 3 、[CH 3 NH 3 ][Tm n Mg (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm n Ca (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm n Ba (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm n Eu (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm n Yb (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm n La (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm n Ce (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm n Pr (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm n Nd (1-n)] [Br] 3 、[CH 3 NH 3 ][Tm n Pm (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm n Gd (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm n Tb (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm n Ho (1-n) ][Br] 3 、[CH 3 NH 3 ][Tm n Er (1-n) ][Br] 3 、[Cs][Tm][Br] 3 、[Cs][Tm n Sr (1-n) ][Br] 3 、[Cs][Tm n Mg (1-n) ][Br] 3 、[Cs][Tm n Ca (1-n) ][Br] 3 、[Cs][Tm n Ba (1-n) ][Br] 3 、[Cs][Tm n Eu (1-n) ][Br] 3 、[Cs][Tm n Yb (1-n) ][Br] 3 、[Cs][Tm n La (1-n) ][Br] 3 、[Cs][Tm n Ce (1-n) ][Br] 3 、[Cs][Tm n Pr (1-n) ][Br] 3 、[Cs][Tm n Nd (1-n) ][Br] 3 、[Cs][Tm n Pm (1-n) ][Br] 3 、[Cs][Tm n Gd (1-n) ][Br] 3 、[Cs][Tm n Tb (1-n) ][Br] 3 、[Cs][Tm n Ho (1-n) ][Br] 3 、[Cs][Tm n Er (1-n) ][Br] 3 Or any combination thereof.
In some exemplary embodiments of the present application, n may be a real number satisfying the condition 0< n < 1. For example, n may be a real number satisfying the condition 0<n.ltoreq.0.6. In some exemplary embodiments of the present application, n may be a real number satisfying the condition 0.001+.n+.0.6. In some exemplary embodiments of the present application, n may be a real number satisfying the condition 0.05+.n+.0.4. However, the exemplary embodiments of the present application are not limited thereto.
In some exemplary embodiments of the present application, X in chemical formula 1 may be an iodide ion (I-). However, the exemplary embodiments of the present application are not limited thereto.
In some exemplary embodiments of the present application, the perovskite compound of chemical formula 1 may be selected from [ CH ] 3 NH 3 ][Pb][Cl] 3 、[CH 3 NH 3 ][Pb n Sr (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Mg (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Ca (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Ba (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Eu (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Yb (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Tm (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n La (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Ce (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Pr (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Nd (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Pm (1-n) ][Cl] 3 、[CH 3 NH 3 ][PbnGd (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Tb (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Ho (1-n) ][Cl] 3 、[CH 3 NH 3 ][Pb n Er (1-n) ][Cl] 3 、[Cs][Pb][Cl] 3 、[Cs][Pb n Sr (1-n) ][Cl] 3 、[Cs][Pb n Mg (1-n) ][Cl] 3 、[Cs][Pb n Ca (1-n) ][Cl] 3 、[Cs][Pb n Ba (1-n) ][Cl] 3 、[Cs][Pb n Eu (1-n) ][Cl] 3 、[Cs][Pb n Yb (1-n) ][Cl] 3 、[Cs][Pb n Tm (1-n) ][Cl]] 3 、[Cs][Pb n La (1-n) ][Cl] 3 、[Cs][Pb n Ce (1-n) ][Cl] 3 、[Cs][Pb n Pr (1-n) ][Cl] 3 、[Cs][Pb n Nd (1-n) ][Cl] 3 、[Cs][Pb n Pm (1-n) ][Cl] 3 、[Cs][Pb n Gd (1-n) ][Cl] 3 、[Cs][Pb n Tb (1-n) ][Cl] 3 、[Cs][Pb n Ho (1-n) ][Cl] 3 、[Cs][Pb n Er (1-n) ][Cl] 3 、[Rb][Pb][Cl] 3 、[Rb][Pb n Sr (1-n) ][Cl] 3 、[Rb][Pb n Mg (1-n) ][Cl] 3 、[Rb][Pb n Ca (1-n) ][Cl] 3 、[Rb][Pb n Ba (1-n) ][Cl] 3 、[Rb][Pb n Eu (1-n) ][Cl] 3 、[Rb][Pb n Yb (1-n) ][Cl] 3 、[Rb][Pb n Tm (1-n) ][Cl] 3 、[Rb][Pb n La (1-n) ][Cl] 3 、[Rb][Pb n Ce (1-n) ][Cl] 3 、[Rb][Pb n Pr (1-n) ][Cl] 3 、[Rb][Pb n Nd (1-n) ][Cl] 3 、[Rb][Pb n Pm (1-n) ][Cl] 3 、[Rb][Pb n Gd (1-n) ][Cl] 3 、[Rb][Pb n Tb (1-n) ][Cl] 3 、[Rb][Pb n Ho (1-n) ][Cl] 3 、[Rb][Pb n Er (1-n) ][Cl] 3 、[K][Pb][Cl] 3 、[K][Pb n Sr (1-n) ][Cl] 3 、[K][Pb n Mg (1-n) ][Cl] 3 、[K][Pb n Ca (1-n) ][Cl] 3 、[K][Pb n Ba (1-n) ][Cl] 3 、[K][Pb n Eu (1-n) ][Cl] 3 、[K][Pb n Yb (1-n) ][Cl] 3 、[K][Pb n Tm (1-n) ][Cl] 3 、[K][Pb n La (1-n) ][Cl] 3 、[K][Pb n Ce (1-n) ][Cl] 3 、[K][Pb n Pr (1-n) ][Cl] 3 、[K][Pb n Nd (1-n) ][Cl] 3 、[K][Pb n Pm (1-n) ][Cl] 3 、[K][Pb n Gd (1-n) ][Cl] 3 、[K][Pb n Tb (1-n) ][Cl] 3 、[K][Pb n Ho (1-n) ][Cl] 3 、[K][Pb n Er (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm][Cl] 3 、[CH 3 NH 3 ][Tm n Sr (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n Mg (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n Ca (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n Ba (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n Eu (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n Yb (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n La (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n Ce (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n Pr (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n Nd (1-n)] [Cl] 3 、[CH 3 NH 3 ][Tm n Pm (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n Gd (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n Tb (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n Ho (1-n) ][Cl] 3 、[CH 3 NH 3 ][Tm n Er (1-n) ][Cl] 3 、[Cs][Tm][Cl] 3 、[Cs][Tm n Sr (1-n) ][Cl] 3 、[Cs][Tm n Mg (1-n) ][Cl] 3 、[Cs][Tm n Ca (1-n) ][Cl] 3 、[Cs][Tm n Ba (1-n) ][Cl] 3 、[Cs][Tm n Eu (1-n) ][Cl] 3 、[Cs][Tm n Yb (1-n) ][Cl] 3 、[Cs][Tm n La (1-n) ][Cl] 3 、[Cs][Tm n Ce (1-n) ][Cl] 3 、[Cs][Tm n Pr (1-n) ][Cl] 3 、[Cs][Tm n Nd (1-n) ][Cl] 3 、[Cs][Tm n Pm (1-n) ][Cl] 3 、[Cs][Tm n Gd (1-n) ][Cl] 3 、[Cs][Tm n Tb (1-n) ][Cl] 3 、[Cs][Tm n Ho (1-n) ][Cl] 3 、[Cs][Tm n Er (1-n) ][Cl] 3 Or any combination thereof.
In some exemplary embodiments of the present application, n may be a real number satisfying the condition 0< n < 1. For example, n may be a real number satisfying the condition 0<n.ltoreq.0.6. In some exemplary embodiments of the present application, n may be a real number satisfying the condition 0.001+.n+.0.6. In some exemplary embodiments of the present application, n may be a real number satisfying the condition 0.05+.n+.0.4. However, the exemplary embodiments of the present application are not limited thereto.
In some exemplary embodiments of the present application, the polymer matrix may include, for example, a polyepoxide resin, a polysilicone epoxy resin, a polysilicone resin, a polystyrene resin, a poly (meth) acrylate resin, or any combination thereof. However, the exemplary embodiments of the present application are not limited thereto.
In some exemplary embodiments of the present application, the perovskite quantum dots may be surrounded by, for example, at least one ligand. The ligand may increase the stability of the perovskite quantum dot and protect the perovskite quantum dot from damaging external conditions such as high temperature, high strength, external gases and/or moisture.
In some exemplary embodiments of the present application, a perovskite quantum dot-polymer film containing quantum dots represented by chemical formula 1 may be prepared by mixing an a-containing precursor, a B-containing precursor, and a polymer matrix precursor and heat-treating.
In some exemplary embodiments of the present application, perovskite quantum dot-polymer films containing quantum dots represented by chemical formula 1 may also be prepared by mixing an a-containing precursor, a B-containing precursor, and a polymer matrix and performing a heat treatment.
In some exemplary embodiments of the present application, the perovskite quantum dot-polymer film containing the quantum dot represented by chemical formula 1 may also be prepared by mixing and then heat-treating a precursor containing a, a precursor containing B to obtain perovskite quantum dots, and then mixing with a polymer matrix or a polymer matrix precursor.
In the precursor containing a and the precursor containing B, a and B may be the same as those defined in chemical formula 1. For example, a of the a-containing precursor may be selected from halides of a (e.g., (a) (X) 1 ) And B of the B-containing precursor may be selected from the halides of B (e.g., (B) (X) 2 )(X 3 )). In the process of (A) (X 1 ) And (B) (X) 2 )(X 3 ) In the halides represented, A and B may be the same as those defined herein, and X 1 To X 3 Can be selected from F-, cl-, br-, or I-independently of each other.
The heat treatment for forming the perovskite quantum dots may be performed at a temperature ranging, for example, from about 50 ℃ to about 800 ℃ for about 1 minute to about 48 hours. However, the exemplary embodiments of the present application are not limited thereto.
In some exemplary embodiments of the present application, a light emitting device includes a light source and a light conversion layer comprising the perovskite quantum dot-polymer film described above; the perovskite quantum dot-polymer film absorbs at least a portion of the light emitted by the light source and emits light having a wavelength range different from the wavelength range of the absorbed light.
The light source is not limited to a particular type of light source, and thus the light source may be any type of light source. For example, the light source may be a light source that can emit light by applying an external voltage. In some exemplary embodiments of the present application, the light source may be a fluorescent lamp, a Light Emitting Diode (LED), an organic LED, a quantum dot light emitting diode (QLED), or any combination thereof. For example, the fluorescent lamps may include Cold Cathode Fluorescent Lamps (CCFLs) and/or External Electrode Fluorescent Lamps (EEFLs). However, the exemplary embodiments of the present application are not limited thereto.
The light source may emit blue light (e.g., light having a wavelength range of about 420nm to about 490 nm) or UV light (e.g., light having a wavelength range of about 300nm to about 420 nm). For example, the light source may be a blue light emitting diode emitting blue light or a UV light emitting diode emitting UV light. However, the exemplary embodiments of the present application are not limited thereto.
In some exemplary embodiments of the present application, the light source of the light emitting device may emit blue light, and the perovskite quantum dot-polymer film may absorb the blue light emitted by the light source and emit light having a wavelength range different from that of the blue light.
A blocking film on at least one surface of the light conversion layer to prevent contact between the light conversion layer and oxygen or moisture. For example, the blocking film may be on a light incident surface of the light conversion layer (e.g., a surface that receives light emitted by the light source) and/or a light emitting surface of the light conversion layer (e.g., a surface through which light is emitted from the light conversion layer).
In some exemplary embodiments of the present application, the blocking film may surround the entire light conversion layer. The barrier film may include, for example, a polyester, a polycarbonate, a polyolefin, a Cyclic Olefin Copolymer (COC), a polyimide, or any combination thereof.
The barrier film may further include an inorganic coating film in the form of a single layer film or a multilayer film. The inorganic material in the inorganic coating film may include an inorganic oxide, for example, silica, alumina, titania, zirconia, or any combination thereof. The inorganic coating layer may inhibit permeation of oxygen or moisture, and thus may increase the ability of the barrier film to block oxygen and/or moisture.
The light conversion layer may be arranged to receive at least a portion of the light emitted by the light source. For example, the light conversion layer may be arranged to directly receive at least a portion of the light emitted by the light source without an intermediate layer between the light source and the light conversion layer. However, the exemplary embodiments of the present application are not limited thereto. For example, the light emitting device may comprise further elements between the light source and the light converting layer. For example, the light source and the light conversion layer may be in direct contact with each other. Thus, light emitted by the light source may be substantially immediately incident into the light conversion layer.
In some exemplary embodiments of the present application, the light source and the light conversion layer may be separated from each other. For example, the light source and the light conversion layer may be spaced apart from each other with additional elements between the light source and the light conversion layer. The further element may be between the light source and the light-converting layer, and the light source and the light-converting layer may face each other. The further element may be in a propagation path of light emitted by the light source towards the light-converting layer.
Fig. 1 and 2 illustrate schematic diagrams of the structure of a light emitting device according to an exemplary embodiment of the present application.
Referring to fig. 1 and 2, in the light emitting devices 10 and 20, the light sources 121, 122, 123, and 220 and the light conversion layers 110 and 210 may be arranged such that light emitted by the light sources 121, 122, 123, and 220 may be incident on the light conversion layers 110 and 210.
In the light emitting device 10, the light sources 121, 122, and 123 may be disposed under the light conversion layer 110, and thus light emitted upward from the light sources 121, 122, and 123 may be incident on the light conversion layer 110.
In the light emitting device 20, the light source 220 may be disposed at one side of the light conversion layer 210. The light emitting device 20 may include additional elements, for example, a light guide plate 230. The light guide plate 230 may increase the efficiency of the light emitted from the light source 220 to the light conversion layer 210.
The light emitting device according to the exemplary embodiments of the present application may be used for various purposes. For example, the light emitting apparatus according to some exemplary embodiments of the present application may be used as a backlight unit (BLU) of a liquid crystal display device, indoor or outdoor lighting, stage lighting, or decorative lighting. However, the exemplary embodiments of the present application are not limited thereto.
Perovskite quantum dot-polymer films according to some exemplary embodiments of the present application will be described in more detail below with reference to the following examples; however, the exemplary embodiments of the present application are not limited thereto.
3 [Cs][Pb][Br]The preparation process of the quantum dot is as follows：
0.407g of Cs is weighed 2 CO 3 15mL of octadecene and 1.25mL of oleic acid are measured, nitrogen is introduced for degassing and protection, the mixture is heated to 120 ℃ and kept for 1h, and then a transparent Cs precursor solution is obtained and is cooled for standby.
In a 50mL three-necked flask,taking 5mL of 1-octadecene and 0.069g of PbBr 2 Introducing nitrogen at 120 ℃ for degassing and stirring for 1h; then, 0.5mL of oleylamine and 0.5mL of oleic acid were added, and the mixture was heated to 150℃and stirred for 1 hour. Then 0.6mL of Cs precursor solution is quickly injected into the solution, the heating is stopped after the reaction is carried out for 5 seconds, the solution is put into ice water for cooling after 10 seconds, and a yellowish green coagulated colloid is obtained, and the solution is naturally warmed to the room temperature after being taken out.
Centrifuging the obtained yellow-green liquid at 1000r/min for 5min, collecting supernatant, centrifuging at 12000r/min for 10min, collecting bottom precipitate, adding 1.5mL toluene, and dispersing with ultrasonic wave to obtain [ Cs ]][Pb][Br] 3 And (3) putting the toluene solution of the quantum dots into a glass bottle, and sealing and preserving at room temperature.
The [ Cs ] obtained][Pb][Br] 3 The quantum dot emits peak wavelength of 518nm under 447nm light excitation, and half-width is about 18nm.
3 3 3 [CHNH][Pb][Br]The preparation process of the quantum dot is as follows：
2mL of octadecene was added to a flask, the flask was placed in an oil bath and heated to 80℃and 0.3mmol of oleic acid was added; 0.06mmol of octylammonium bromide and 0.04mmol of methylammonium bromide are weighed into a beaker; adding 100 microliters of DMF into a beaker, adding 0.1mmol of lead bromide which is dissolved in 100 microliters of DMF into the flask in advance after the solid in the beaker is completely dissolved, and reacting for a period of time; then adding 4mL of acetone into the flask to obtain a precipitate, and performing centrifugation operation at 7000r/min for 10min for 3 times; 1.5mL of toluene was added to the precipitate, and the mixture was sonicated to give [ CH ] 3 NH 3 ][Pb][Br] 3 And (3) putting the toluene solution of the quantum dots into a glass bottle, and sealing and preserving at room temperature.
The [ CH ] obtained 3 NH 3 ][Pb][Br] 3 The quantum dot emits light with a peak wavelength of 525nm and a half-width of 19nm under the excitation of 447nm light.
Example 1
Perovskite quantum dot-polymer film: perovskite quantum dot is [ Cs ]][Pb][Br] 3 The quantum dots and the polymer matrix are poly (methyl) acrylate resin.
Preparation of perovskite quantum dot-polymer film: an amount of [ Cs ]][Pb][Br] 3 After the toluene solution of the quantum dot is mixed with a certain amount of (methyl) acrylate resin, the low-rotation-speed negative pressure spin foam is removed. And casting at normal temperature and pressure to form a film, and respectively preparing perovskite quantum dot-polymer films with the thickness L of 10 microns, 20 microns, 30 microns, 50 microns, 60 microns, 80 microns, 100 microns, 200 microns and 400 microns.
The perovskite quantum dot-polymer film was tested for fluorescence emission peak using a PR655 photometer using an excitation wavelength of 447nm and an emission peak wavelength as shown in table 1 below:
table 1:
example 2
Perovskite quantum dot-polymer film: perovskite quantum dot is [ CH ] 3 NH 3 ][Pb][Br] 3 The quantum dots and the polymer matrix are poly (methyl) acrylate resin.
Preparation of perovskite quantum dot-polymer film: will be a certain amount of [ CH ] 3 NH 3 ][Pb][Br] 3 After the toluene solution of the quantum dot is mixed with a certain amount of (methyl) acrylate resin, the low-rotation-speed negative pressure spin foam is removed. And casting at normal temperature and pressure to form a film, and respectively preparing perovskite quantum dot-polymer films with the thickness L of 10 microns, 20 microns, 30 microns, 50 microns, 60 microns, 80 microns, 100 microns, 200 microns and 400 microns.
The perovskite quantum dot-polymer film was tested for fluorescence emission peak using a PR655 photometer using an excitation wavelength of 447nm with emission peak wavelengths as shown in table 2 below:
table 2:
from the results in tables 1 and 2, it was found that the perovskite quantum dot-polymer film emission peak wavelength λ and the thickness of the perovskite quantum dot-polymer film were recorded as L exhibited good positive correlation. The perovskite quantum dot-polymer film with the preset wavelength can be obtained by changing the value of the weight percentage L, so that the perovskite quantum dot-polymer film can be particularly conveniently applied to backlight units (BLU) of liquid crystal display devices, indoor or outdoor illumination, stage illumination or decorative illumination.
While the present disclosure has been particularly shown and described with reference to the preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims (2)

1. A perovskite quantum dot-polymer film comprising perovskite quantum dots and a polymer matrix, the perovskite quantum dots being dispersed in the polymer matrix;
the thickness of the perovskite quantum dot-polymer film is recorded as L;
the emission peak-to-peak wavelength of the perovskite quantum dot-polymer film under blue light excitation is marked as lambda;
in the case where L is 10 micrometers or more and 400 micrometers or less, λ and L exhibit positive correlation;
mixing toluene solution of [ Cs ] [ Pb ] [ Br ]3 quantum dots with (methyl) acrylic ester resin to prepare a perovskite quantum dot-polymer film, wherein when the thickness L of the perovskite quantum dot-polymer film is 10 microns, the emission peak wavelength lambda of the perovskite quantum dot-polymer film is 518nm; when the thickness L of the perovskite quantum dot-polymer film is 20 micrometers, the emission peak-to-peak wavelength lambda of the perovskite quantum dot-polymer film is 519nm; when the thickness L of the perovskite quantum dot-polymer film is 30 micrometers, the emission peak-to-peak wavelength lambda of the perovskite quantum dot-polymer film is 521nm; when the thickness L of the perovskite quantum dot-polymer film is 50 micrometers, the emission peak-to-peak wavelength lambda of the perovskite quantum dot-polymer film is 523nm; when the thickness L of the perovskite quantum dot-polymer film is 60 micrometers, the emission peak-to-peak wavelength lambda of the perovskite quantum dot-polymer film is 525nm; when the thickness L of the perovskite quantum dot-polymer film is 80 microns, the emission peak-to-peak wavelength lambda of the perovskite quantum dot-polymer film is 526nm; when the thickness L of the perovskite quantum dot-polymer film is 100 micrometers, the emission peak-to-peak wavelength lambda of the perovskite quantum dot-polymer film is 532nm; when the thickness L of the perovskite quantum dot-polymer film is 200 micrometers, the emission peak-to-peak wavelength lambda of the perovskite quantum dot-polymer film is 533nm; when the thickness L of the perovskite quantum dot-polymer film is 400 micrometers, the emission peak-to-peak wavelength lambda of the perovskite quantum dot-polymer film is 534nm;
mixing toluene solution of [ CH3NH3] [ Pb ] [ Br ]3 quantum dots with (methyl) acrylic ester resin to prepare a perovskite quantum dot-polymer film, wherein when the thickness L of the perovskite quantum dot-polymer film is 10 microns, the emission peak wavelength lambda of the perovskite quantum dot-polymer film is 525nm; when the thickness L of the perovskite quantum dot-polymer film is 20 micrometers, the emission peak wavelength lambda of the perovskite quantum dot-polymer film is 527nm; when the thickness L of the perovskite quantum dot-polymer film is 30 micrometers, the emission peak-to-peak wavelength lambda of the perovskite quantum dot-polymer film is 528nm; when the thickness L of the perovskite quantum dot-polymer film is 50 micrometers, the emission peak wavelength lambda of the perovskite quantum dot-polymer film is 529nm; when the thickness L of the perovskite quantum dot-polymer film is 60 micrometers, the emission peak wavelength lambda of the perovskite quantum dot-polymer film is 531nm; when the thickness L of the perovskite quantum dot-polymer film is 80 microns, the emission peak-to-peak wavelength lambda of the perovskite quantum dot-polymer film is 533nm; when the thickness L of the perovskite quantum dot-polymer film is 100 micrometers, the emission peak wavelength lambda of the perovskite quantum dot-polymer film is 536nm; when the thickness L of the perovskite quantum dot-polymer film is 200 micrometers, the emission peak-to-peak wavelength lambda of the perovskite quantum dot-polymer film is 538nm; when the perovskite quantum dot-polymer film thickness L is 400 micrometers, the perovskite quantum dot-polymer film emission peak wavelength lambda is 540nm.
2. A light emitting device comprising a light source and a light conversion layer comprising the perovskite quantum dot-polymer film of claim 1;
the perovskite quantum dot-polymer film absorbs at least a portion of the light emitted by the light source and emits light having a wavelength range different from the wavelength range of the absorbed light.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105824196A (en) * 2015-01-23 2016-08-03 三星显示有限公司 Photosensitive resin composition and display device
CN106450021A (en) * 2016-11-24 2017-02-22 南方科技大学 Organic electroluminescent device and preparation method thereof
CN106501999A (en) * 2016-11-11 2017-03-15 张家港海纳至精新材料科技有限公司 Blooming group and backlight module
CN107022354A (en) * 2015-10-28 2017-08-08 三星电子株式会社 Quantum dot, its manufacture method, quanta polymer compound and the electronic installation including it
CN107195789A (en) * 2017-06-01 2017-09-22 吉林大学 A kind of preparation method of inorganic mixed halogen perovskite thin film and its application in terms of solar cell is prepared
CN107528003A (en) * 2016-06-15 2017-12-29 三星显示有限公司 Organic light-emitting display device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105824196A (en) * 2015-01-23 2016-08-03 三星显示有限公司 Photosensitive resin composition and display device
CN107022354A (en) * 2015-10-28 2017-08-08 三星电子株式会社 Quantum dot, its manufacture method, quanta polymer compound and the electronic installation including it
CN107528003A (en) * 2016-06-15 2017-12-29 三星显示有限公司 Organic light-emitting display device
CN106501999A (en) * 2016-11-11 2017-03-15 张家港海纳至精新材料科技有限公司 Blooming group and backlight module
CN106450021A (en) * 2016-11-24 2017-02-22 南方科技大学 Organic electroluminescent device and preparation method thereof
CN107195789A (en) * 2017-06-01 2017-09-22 吉林大学 A kind of preparation method of inorganic mixed halogen perovskite thin film and its application in terms of solar cell is prepared

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Alumina/polymer-coated nanocrystals with extremely high stability used as a color conversion material in LEDs;WOO J Y等;《Nanotechnology》;20131127;第24卷;第505714页 *
High color-rendering warm-white lamps using quantum-dot color conversion films;LIEN J Y等;《Optics Express》;20160520;第24卷;第A1021-A1032页 *
Preparation of a photo-degradation-resistant quantum dot-polymer composite plate for use in the fabrication of a high-stability white-light-emitting diode;JANG E P等;《Nanotechnology》;20130108;第24卷;第045607页 *
量子点液晶显示背光技术;季洪雷 等;《中国光学》;20171001;第10卷;第666-680页 *

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