CN109651887A - Perovskite quantum dot ink and luminescent film - Google Patents
Perovskite quantum dot ink and luminescent film Download PDFInfo
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- CN109651887A CN109651887A CN201811357540.XA CN201811357540A CN109651887A CN 109651887 A CN109651887 A CN 109651887A CN 201811357540 A CN201811357540 A CN 201811357540A CN 109651887 A CN109651887 A CN 109651887A
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Abstract
This application discloses a kind of perovskite quantum dot ink, including perovskite quantum dot, solvent and cation dispersing agent, the perovskite quantum dot accounts for 0.1wt%~20wt% of the perovskite quantum dot ink；The solvent accounts for 70wt%~90wt% of the perovskite quantum dot ink；The cation dispersing agent accounts for 0.5wt%~10wt% of the perovskite quantum dot ink.The addition of cation dispersing agent improves the dispersion concentration and dispersion stabilization of perovskite quantum dot in the ink.When carrying out inkjet printing using the perovskite quantum dot ink of the application, process is smooth, obtained luminescent film good properties.
Description
Technical field
The application belongs to field of display technology more particularly to a kind of perovskite quantum dot ink and luminescent film.
Background technique
Quantum dot, also known as semiconductor nano, since it is with excitation spectrum line width, that transmitting is narrow, fluorescence efficiency is high etc. is excellent
Different optical property is widely used in photoelectric fields such as biomedicine, LED, photodetector and solar batteries and grinds
Study carefully.The luminous of traditional II-VI group quantum dot is strongly dependent on its quantum confined effect, and luminous position can be with quantum dot ruler
Very little and change, this typically results in transmitting spectrum width, and synthesis repeatability is not high, and luminous position is easily affected by temperature.Compare and
Speech, the quantum confined effect of perovskite quantum dot (PQDs) is relatively weak, and the inhomogeneity and surface trap state of size will not
There is large effect to its luminosity, and its luminous position is not easy to change because of temperature.In recent years, perovskite quantum dot is due to it
Excellent optical property, further by the concern of researcher.
Perovskite quantum dot, which is dispersed in solvent, is configured to ink, and the methods of printing, bat printing, spin coating system specifically can be used
Standby perovskite light-emitting film.However, existing perovskite quantum dot ink can only dissolve the perovskite quantum dot of low concentration, and
And the dispersion stabilization of perovskite quantum dot in the ink is poor, it is heavy poly- to be easy to happen, especially will cause in ink jet printing process at
Film is uneven.
Summary of the invention
In view of the above technical problems, the application provides a kind of perovskite quantum dot ink and luminescent film.
According to a first aspect of the present application, a kind of perovskite quantum dot ink, including perovskite quantum dot, solvent are provided
And cation dispersing agent, the perovskite quantum dot account for 0.1wt%~20wt% of the perovskite quantum dot ink；It is described molten
Agent accounts for 70wt%~90wt% of the perovskite quantum dot ink；The cation dispersing agent accounts for the perovskite quantum dot ink
0.5wt%~5wt% of water.
Further, the cation dispersing agent is at least one in amine salt type, quaternary, heterocyclic type and hello salt form
Kind.
Further, the solvent includes at least one alkane solvents and at least one aromatic hydrocarbon solvent, normal atmosphere
Pressure, the boiling point of the alkane solvents are 180~280 DEG C, and the boiling point of the aromatic hydrocarbon solvent is 200~280 DEG C.
Further, the boiling point of the aromatic hydrocarbon solvent is at least 10 DEG C higher than the alkane solvents.
Further, the alkane solvents include saturated or unsaturated alkane, and the alkane includes n-undecane, just
At least one of dodecane, n-tridecane, n-tetradecane, n-pentadecane and its isomer.
Further, the aromatic hydrocarbon solvent includes saturated or unsaturated aromatic hydrocarbons, and the aromatic hydrocarbons includes amylbenzene, hexyl
Benzene, diamyl benzene, cyclohexyl benzene, naphthane, 1- methyl naphthalene, dimethylnaphthalene, isopropyl biphenyl, biphenyl, in benzyl benzene at least
It is a kind of.
Further, the volume ratio of the alkane solvents and the aromatic hydrocarbon solvent is (3~7): 1.
Further, the general structure of the perovskite quantum dot is ABX3, wherein A is at least one organic sun of unit price
Ion, at least one monovalent inorganic cation or any combination thereof；B is at least one divalent inorganic cations；X is at least one
Halide anion.
According to the another aspect of the application, a kind of luminescent film is provided, which is characterized in that the luminescent film is by above-mentioned calcium titanium
Mine quantum dot ink is made.
The utility model has the advantages that the addition of cation dispersing agent, not only without the luminescent properties of destruction perovskite quantum dot, Er Qieti
The high dispersion concentration and dispersion stabilization of perovskite quantum dot in the ink.Utilize the perovskite quantum dot ink of the application
When carrying out inkjet printing, process is smooth, and quantum dot is there is no heavy poly-, and film forming is uniform, obtained luminescent film good properties.
Specific embodiment
Below in conjunction with the application embodiment, technical solutions in the embodiments of the present application is described in detail.It answers
It is noted that described embodiment is only a part of embodiment of the application, rather than whole embodiments.
Since the boiling point of solvent at various pressures is different, the boiling point of solvent refers both to the boiling of normal atmosphere pressure in the application
Point.
This application provides a kind of perovskite quantum dot ink, including perovskite quantum dot, solvent and cation dispersing agent,
Wherein, in terms of weight fraction, perovskite quantum dot accounting 0.1wt%~20wt%, solvent accounting 70wt%~90wt%, sun from
Sub- dispersing agent accounting 0.5wt%~5wt%.
Perovskite quantum dot is generally directly dispersing in toluene solvant, and dispersion concentration is about 5% or so, this lower dispersion
The light conversion efficiency that the ink of concentration obtains quantum dot film after printing is low, and emitting brightness is low, and luminescent properties are very poor.Invention human hair
It is existing, boiling point be 180~280 DEG C alkane and boiling point be 200~280 DEG C aromatic hydrocarbons in the mixed solvent cation dispersion is added
Agent, greatly enhances the dispersion concentration of perovskite quantum dot, and is long placed in rear quantum dot and will not occur heavy poly-, and dispersion is steady
It is qualitative good.The parameter requests such as viscosity, surface tension needed for the perovskite quantum dot ink is also able to satisfy inkjet printing, printed
Nonchoking nozzle in journey, printing-filming are uniform.
The application cation dispersing agent includes amine salt type, quaternary, cation dispersing agent in heterocyclic type and salt form
It is at least one.Amine salt is divided into primary amine salt, secondary amine salt, three kinds of tertiary ammonium salt, and the amine salt type cation dispersing agent includes alkylamine salt
Type, amino alcohol fatty acid derivatives type, polyamines derivative of fatty acid type and imidazoline type cation dispersing agent.The quaternary
Cation dispersing agent includes alkyl trimethyl ammonium salt type, dialkyl dimethyl ammonium salt type, alkyl dimethyl benzyl ammonium type, pyridine
Salt form, alkylisoquinolinium salt form, benzyl chloride ammonium salt type cation dispersing agent.Heterocycle in the heterocyclic type cation dispersing agent
Mainly nitrogenous morpholine ring, pyridine ring, imidazole ring, piperazine ring and quinoline ring etc..The salt form cation dispersing agent includes
Phosphonium salt compound, sulfonium salt compound, iodine compound, Arsenic salt compound.
Inventors have found that in above-mentioned cation dispersing agent in a specific embodiment, cation dispersing agent choosing
From dodecyl benzyl dimethyl ammonium chloride, dodecyl trimethyl ammonium chloride, dodecyl trimethyl ammonium bromide, cetyl
Trimethyl ammonium chloride, cetyl trimethylammonium bromide, stearyl dimethyl benzyl ammonium chloride, octadecyldimethyl -3,
4- dichloro benzyl chlorination ammonium, dioctadecyl dimethyl ammonium chloride, octadecyldimethyl ethoxy quaternary ammonium nitrate, the tetradecane
Base lutidines ammonium bromide, dialkyl ethanolamine ester methyl sulfate methyl ammonium, tri alkyl ammomium chloride, hexatriacontane ylmethyl chlorine
Change ammonium, benzyltriethylammoinium chloride, triakyl benzyl ammonio methacrylate, aliphatic amine polyoxyethylene ether ammonio methacrylate, dimethyl
The double stearate methylsulfuric acid ammonium methyls of diallyl ammonium chloride, diethylaminoethyl acrylate ammonium chloride, triethanolamine, 18
Amido propyl-N, N- dimethyl amine, palmitic amide hydroxypropyltrimonium chloride, cocoamidopropyl dimethyl dihydroxypropyl chlorine
Change ammonium, stearic acid amido propyl dimethyl dihydroxypropyl ammonium chloride, behenic acid amido propyl dimethyl dihydroxypropyl ammonium chloride,
2- (2- phenoxy group methoxyl group) ethyl-trimethyl salmiac, cetyl trimethyl ammonium heteropoly acids, double eight Alkyl-methyls benzyls
Ammonium chloride, dodecyl dimethyl benzyl ammonium imino-diacetic methylenephosphonic acid, methacrylic acid -2- (N, N- dimethyl amido) ethyl ester benzyl
Ammonium chloride, quinoline benzyl ammonium chloride, vinyl pyrrolidone and methacrylamide hydroxypropyltrimonium chloride, vinyl pyrrole
Alkanone and dimethylaminoethyl methacrylate quaternized copolymer, two hydroxypropyl of alkylamido propyl group-N, N- dimethyl -2,3-
Ammonium chloride, glycidyl phenethyl two (stearamide ethyl) ammonium chloride, polyethyleneimine quaternary ammonium salt, monoalkyl (phenol) ethoxy
Base mono succinate ester quat, bi-imidazoline quaternary ammonium salt, fatty alcohol polyoxyethylene ether mono-quaternaries, alkyl phenol polyoxyethylene ether season
Ammonium salt, anhydrous sorbitol mono fatty acid ester APEO quaternary ammonium salt, polyoxyethylene groups alkyl quaternary ammonium salts, polyoxyethylene groups amber
Acid monoester quaternary ammonium salt, polyoxyethylene groups anhydrous sorbitol mono fatty acid ester quat, alkyl polysaccharide class quaternary ammonium salt, sucrose monoester fat
Ester quat, rosin ester based quaternary ammonium salt, cellulose ether based quaternary ammonium salt, starch ether based quaternary ammonium salt, guar gum ether quaternary ammonium salt, ammonia
At least one of base acid esters based quaternary ammonium salt.However, the illustrative embodiments of the application are without being limited thereto.
Due to boiling point be 180~280 DEG C alkane to the good dispersion of perovskite quantum dot, and boiling point is higher, in this way, can
Effectively to avoid the problem that ink droplet rate of drying is too fast and causes spray nozzle clogging when printing.The controllable calcium of the addition of aromatic hydrocarbon solvent
The viscosity and surface tension of titanium ore quantum dot ink make ink have preferable wellability and easily in printed substrates to desired value
In sprawling.
In a specific embodiment, the boiling point of aromatic solvent is at least than alkane solvent in perovskite quantum dot ink
It is 10 DEG C high.In this way, alkane solvent more first volatilizees after printing forms ink droplet, volatilize after aromatic hydrocarbon solvent, so as to certain
The coffee ring phenomenon for inhibiting ink to occur in drying and forming-film in degree.Preferably, the boiling point of aromatic solvent is extremely than alkane solvent
It is few 20 DEG C high.
In a specific embodiment, alkane solvents include saturation or unsaturated alkane, preferably n-undecane,
N-dodecane, n-tridecane, n-tetradecane, n-pentadecane and its isomer (such as 1- methylundecane, 3- methyl 11
At least one of alkane, 3- methyltetradecylphosphine, 3- methyltridec).Straight chain or branch of these carbon atom numbers between 11~15
Alkane meets boiling spread, and the mixed solvent volatilization with aromatic solvent forms perovskite quantum dot light emitting film after removing.
In a specific embodiment, aromatic hydrocarbon solvent include saturation or unsaturated aromatic hydrocarbon, preferably amylbenzene, oneself
Base benzene, diamyl benzene, cyclohexyl benzene, naphthane, 1- methyl naphthalene, dimethylnaphthalene, isopropyl biphenyl, biphenyl, in benzyl benzene extremely
Few one kind.
In a specific embodiment, the volume ratio of alkane solvents and aromatic hydrocarbon solvent is (3~7): 1.Invention
People's discovery, when the volume ratio of alkane solvents and aromatic hydrocarbon solvent is less than 3:1, quantum dot ink polarity is lower, can beat
Random excessive exhibition on substrate is printed, regular film can not be formed, so that film-formation result is poor；And work as alkane solvents and aromatic hydrocarbon solvent
Volume ratio be greater than 7:1 when, wellability of the quantum dot ink in print substrate is poor, is not easy to sprawl, and evaporation rate is slack-off, at
Membrane efficiency is low and may cause printing nozzle blocking.Therefore, the volume ratio of alkane solvents and aromatic hydrocarbon solvent is preferably (3
~7): 1.More preferably exist, 3:1,4:1,5:1,6:1 or 7:1.
The general structure of perovskite quantum dot is ABX in the application3.Wherein, A be at least one monovalent organic cation,
At least one monovalent inorganic cation or any combination thereof, B is at least one divalent inorganic cations, and X is at least one single
Valence anion.
A includes (NH in the general structure of perovskite quantum dot4)+、(PH4)+、(AsH4)+、(SbH4)+、(NF4)+、(PF4)+、
(NCl4)+、(PCl4)+、(CH3NH3)+、(CH3PH3)+、(CH3AsH3)+、(CH3SbH3)+、((CH3)2NH2)+、((CH3)2PH2)+、
((CH3)2AsH2)+、((CH3)2SbH2)+、((CH3)3NH)+、((CH3)3PH)+、((CH3)3AsH)+、((CH3)3SbH)+、
((CH3CH2)NH3)+、((CH3CH2)PH3)+、((CH3CH2)AsH3)+、((CH3CH2)SbH3)+、(CH2N2H4)+、(C7H7)+、
(NH3OH)+、(NH3NH2)+、((CH2)3NH2)+、(CH(NH2)2)+、(C3N2H5)+、(NC4H8)+、((NH2)3C)+、K+、Rb+、Cs+
Or any combination thereof.However, the illustrative embodiments of the application are without being limited thereto.
In the general structure of perovskite quantum dot B include the bivalent cation of rare earth metal, alkaline-earth metal divalent sun from
Son, the bivalent cation of transition metal, late transition metal bivalent cation, or any combination thereof.Such as La2+、Ce2+、Pr2+、
Nd2+、Pm2+、Eu2+、Gd2+、Tb2+、Ho2+、Er2+、Tm2+、Yb2+、Lu2+、Be2+、Mg2+、Ca2+、Sr2+、Ba2+、Ra2+、Pb2+、Sn2+
Or any combination thereof.However, the illustrative embodiments of the application are without being limited thereto.
X can be at least one halide anion, such as F in the general structure of perovskite quantum dot-、Cl-、Br-Or I-.However,
The illustrative embodiments of the application are without being limited thereto.
In a specific embodiment, X can be iodide ion (I-), perovskite compound can be selected from CH3NH3PbI3、
CH3NH3PbnSr(1-n)I3、CH3NH3PbnMg(1-n)I3、CH3NH3PbnCa(1-n)I3、CH3NH3PbnBa(1-n)I3、CH3NH3PbnEu(1-n)
I3、CH3NH3PbnYb(1-n)I3、CH3NH3PbnTm(1-n)I3、CH3NH3PbnLa(1-n)I3、CH3NH3PbnCe(1-n)I3、
CH3NH3PbnPr(1-n)I3、CH3NH3PbnNd(1-n)I3、CH3NH3PbnPm(1-n)I3、CH3NH3PbnGd(1-n)I3、
CH3NH3PbnTb(1-n)I3、CH3NH3PbnHo(1-n)I3、CH3NH3PbnEr(1-n)I3、CsPbI3、CsPbnSr(1-n)I3、CsPbnMg(1-n)
I3、CsPbnCa(1-n)I3、CsPbnBa(1-n)I3、CsPbnEu(1-n)I3、CsPbnYb(1-n)I3、CsPbnTm(1-n)I3、CsPbnLa(1-n)
I3、CsPbnCe(1-n)I3、CsPbnPr(1-n)I3、CsPbnNd(1-n)I3、CsPbnPm(1-n)I3、CsPbnGd(1-n)I3、CsPbnTb(1-n)
I3、CsPbnHo(1-n)I3、CsPbnEr(1-n)I3、RbPbI3、RbPbnSr(1-n)I3、RbPbnMg(1-n)I3、RbPbnCa(1-n)I3、
RbPbnBa(1-n)I3、RbPbnEu(1-n)I3、RbPbnYb(1-n)I3、RbPbnTm(1-n)I3、RbPbnLa(1-n)I3、RbPbnCe(1-n)I3、
RbPbnPr(1-n)I3、RbPbnNd(1-n)I3、RbPbnPm(1-n)I3、RbPbnGd(1-n)I3、RbPbnTb(1-n)I3、RbPbnHo(1-n)I3、
RbPbnEr(1-n)I3、KPbI3、KPbnSr(1-n)I3、KPbnMg(1-n)I3、KPbnCa(1-n)I3、KPbnBa(1-n)I3、KPbnEu(1-n)I3、
KPbnYb(1-n)I3、KPbnTm(1-n)I3、KPbnLa(1-n)I3、KPbnCe(1-n)I3、KPbnPr(1-n)I3、KPbnNd(1-n)I3、
KPbnPm(1-n)I3、KPbnGd(1-n)I3、KPbnTb(1-n)I3、KPbnHo(1-n)I3、KPbnEr(1-n)I3、CH3NH3TmI3、
CH3NH3TmnSr(1-n)I3、CH3NH3TmnMg(1-n)I3、CH3NH3TmnCa(1-n)I3、CH3NH3TmnBa(1-n)I3、CH3NH3TmnEu(1-n)
I3、CH3NH3TmnYb(1-n)I3、CH3NH3TmnLa(1-n)I3、CH3NH3TmnCe(1-n)I3、CH3NH3TmnPr(1-n)I3、
CH3NH3TmnNd(1-n)I3、CH3NH3TmnPm(1-n)I3、CH3NH3TmnGd(1-n)I3、CH3NH3TmnTb(1-n)I3、CH3NH3TmnHo(1-n)
I3、CH3NH3TmnEr(1-n)I3、CsTmI3、CsTmnSr(1-n)I3、CsTmnMg(1-n)I3、CsTmnCa(1-n)I3、CsTmnBa(1-n)I3、
CsTmnEu(1-n)I3、CsTmnYb(1-n)I3、CsTmnLa(1-n)I3、CsTmnCe(1-n)I3、CsTmnPr(1-n)I3、CsTmnNd(1-n)I3、
CsTmnPm(1-n)I3、CsTmnGd(1-n)I3、CsTmnTb(1-n)I3、CsTmnHo(1-n)I3、CsTmnEr(1-n)I3Or any combination thereof.
In some illustrative embodiments of the application, n can be the real number for meeting condition 0 < n < 1.For example, n can be full
The real number of sufficient condition 0 < n≤0.6.In some illustrative embodiments of the application, n can be meet 0.001≤n of condition≤
0.6 real number.In some illustrative embodiments of the application, n can be the real number for meeting condition 0.05≤n≤0.4.So
And the illustrative embodiments of the application are without being limited thereto.
In a specific embodiment, X can be bromide ion (Br-), perovskite compound can be selected from CH3NH3PbBr3、
CH3NH3PbnSr(1-n)Br3、CH3NH3PbnMg(1-n)Br3、CH3NH3PbnCa(1-n)Br3、CH3NH3PbnBa(1-n)Br3、
CH3NH3PbnEu(1-n)Br3、CH3NH3PbnYb(1-n)Br3、CH3NH3PbnTm(1-n)Br3、CH3NH3PbnLa(1-n)Br3、
CH3NH3PbnCe(1-n)Br3、CH3NH3PbnPr(1-n)Br3、CH3NH3PbnNd(1-n)Br3、CH3NH3PbnPm(1-n)Br3、
CH3NH3PbnGd(1-n)Br3、CH3NH3PbnTb(1-n)Br3、CH3NH3PbnHo(1-n)Br3、CH3NH3PbnEr(1-n)Br3、CsPbBr3、
CsPbnSr(1-n)Br3、CsPbnMg(1-n)Br3、CsPbnCa(1-n)Br3、CsPbnBa(1-n)Br3、CsPbnEu(1-n)Br3、
CsPbnYb(1-n)Br3、CsPbnTm(1-n)Br3、CsPbnLa(1-n)Br3、CsPbnCe(1-n)Br3、CsPbnPr(1-n)Br3、
CsPbnNd(1-n)Br3、CsPbnPm(1-n)Br3、CsPbnGd(1-n)Br3、CsPbnTb(1-n)Br3、CsPbnHo(1-n)Br3、
CsPbnEr(1-n)Br3、RbPbBr3、RbPbnSr(1-n)Br3、RbPbnMg(1-n)Br3、RbPbnCa(1-n)Br3、RbPbnBa(1-n)Br3、
RbPbnEu(1-n)Br3、RbPbnYb(1-n)Br3、RbPbnTm(1-n)Br3、RbPbnLa(1-n)Br3、RbPbnCe(1-n)Br3、
RbPbnPr(1-n)Br3、RbPbnNd(1-n)Br3、RbPbnPm(1-n)Br3、RbPbnGd(1-n)Br3、RbPbnTb(1-n)Br3、
RbPbnHo(1-n)Br3、RbPbnEr(1-n)Br3、KPbBr3、KPbnSr(1-n)Br3、KPbnMg(1-n)Br3、KPbnCa(1-n)Br3、
KPbnBa(1-n)Br3、KPbnEu(1-n)Br3、KPbnYb(1-n)Br3、KPbnTm(1-n)Br3、KPbnLa(1-n)Br3、KPbnCe(1-n)Br3、
KPbnPr(1-n)Br3、KPbnNd(1-n)Br3、KPbnPm(1-n)Br3、KPbnGd(1-n)Br3、KPbnTb(1-n)Br3、KPbnHo(1-n)Br3、
KPbnEr(1-n)Br3、CH3NH3TmBr3、CH3NH3TmnSr(1-n)Br3、CH3NH3TmnMg(1-n)Br3、CH3NH3TmnCa(1-n)Br3、
CH3NH3TmnBa(1-n)Br3、CH3NH3TmnEu(1-n)Br3、CH3NH3TmnYb(1-n)Br3、CH3NH3TmnLa(1-n)Br3、
CH3NH3TmnCe(1-n)Br3、CH3NH3TmnPr(1-n)Br3、CH3NH3TmnNd(1-n)Br3、CH3NH3TmnPm(1-n)Br3、
CH3NH3TmnGd(1-n)Br3、CH3NH3TmnTb(1-n)Br3、CH3NH3TmnHo(1-n)Br3、CH3NH3TmnEr(1-n)Br3、CsTmBr3、
CsTmnSr(1-n)Br3、CsTmnMg(1-n)Br3、CsTmnCa(1-n)Br3、CsTmnBa(1-n)Br3、CsTmnEu(1-n)Br3、
CsTmnYb(1-n)Br3、CsTmnLa(1-n)Br3、CsTmnCe(1-n)Br3、CsTmnPr(1-n)Br3、CsTmnNd(1-n)Br3、
CsTmnPm(1-n)Br3、CsTmnGd(1-n)Br3、CsTmnTb(1-n)Br3、CsTmnHo(1-n)Br3、CsTmnEr(1-n)Br3Or its any group
It closes.
In some illustrative embodiments of the application, n can be the real number for meeting condition 0 < n < 1.For example, n can be full
The real number of sufficient condition 0 < n≤0.6.In some illustrative embodiments of the application, n can be meet 0.001≤n of condition≤
0.6 real number.In some illustrative embodiments of the application, n can be the real number for meeting condition 0.05≤n≤0.4.So
And the illustrative embodiments of the application are without being limited thereto.
In a specific embodiment, X can be iodide ion (I-), perovskite compound can be selected from CH3NH3PbCl3、
CH3NH3PbnSr(1-n)Cl3、CH3NH3PbnMg(1-n)Cl3、CH3NH3PbnCa(1-n)Cl3、CH3NH3PbnBa(1-n)Cl3、
CH3NH3PbnEu(1-n)Cl3、CH3NH3PbnYb(1-n)Cl3、CH3NH3PbnTm(1-n)Cl3、CH3NH3PbnLa(1-n)Cl3、
CH3NH3PbnCe(1-n)Cl3、CH3NH3PbnPr(1-n)Cl3、CH3NH3PbnNd(1-n)Cl3、CH3NH3PbnPm(1-n)Cl3、
CH3NH3PbnGd(1-n)Cl3、CH3NH3PbnTb(1-n)Cl3、CH3NH3PbnHo(1-n)Cl3、CH3NH3PbnEr(1-n)Cl3、CsPbCl3、
CsPbnSr(1-n)Cl3、CsPbnMg(1-n)Cl3、CsPbnCa(1-n)Cl3、CsPbnBa(1-n)Cl3、CsPbnEu(1-n)Cl3、
CsPbnYb(1-n)Cl3、CsPbnTm(1-n)Cl3、CsPbnLa(1-n)Cl3、CsPbnCe(1-n)Cl3、CsPbnPr(1-n)Cl3、
CsPbnNd(1-n)Cl3、CsPbnPm(1-n)Cl3、CsPbnGd(1-n)Cl3、CsPbnTb(1-n)Cl3、CsPbnHo(1-n)Cl3、
CsPbnEr(1-n)Cl3、RbPbCl3、RbPbnSr(1-n)Cl3、RbPbnMg(1-n)Cl3、RbPbnCa(1-n)Cl3、RbPbnBa(1-n)Cl3、
RbPbnEu(1-n)Cl3、RbPbnYb(1-n)Cl3、RbPbnTm(1-n)Cl3、RbPbnLa(1-n)Cl3、RbPbnCe(1-n)Cl3、
RbPbnPr(1-n)Cl3、RbPbnNd(1-n)Cl3、RbPbnPm(1-n)Cl3、RbPbnGd(1-n)Cl3、RbPbnTb(1-n)Cl3、
RbPbnHo(1-n)Cl3、RbPbnEr(1-n)Cl3、KPbCl3、KPbnSr(1-n)Cl3、KPbnMg(1-n)Cl3、KPbnCa(1-n)Cl3、
KPbnBa(1-n)Cl3、KPbnEu(1-n)Cl3、KPbnYb(1-n)Cl3、KPbnTm(1-n)Cl3、KPbnLa(1-n)Cl3、KPbnCe(1-n)Cl3、
KPbnPr(1-n)Cl3、KPbnNd(1-n)Cl3、KPbnPm(1-n)Cl3、KPbnGd(1-n)Cl3、KPbnTb(1-n)Cl3、KPbnHo(1-n)Cl3、
KPbnEr(1-n)Cl3、CH3NH3TmCl3、CH3NH3TmnSr(1-n)Cl3、CH3NH3TmnMg(1-n)Cl3、CH3NH3TmnCa(1-n)Cl3、
CH3NH3TmnBa(1-n)Cl3、CH3NH3TmnEu(1-n)Cl3、CH3NH3TmnYb(1-n)Cl3、CH3NH3TmnLa(1-n)Cl3、
CH3NH3TmnCe(1-n)Cl3、CH3NH3TmnPr(1-n)Cl3、CH3NH3TmnNd(1-n)Cl3、CH3NH3TmnPm(1-n)Cl3、
CH3NH3TmnGd(1-n)Cl3、CH3NH3TmnTb(1-n)Cl3、CH3NH3TmnHo(1-n)Cl3、CH3NH3TmnEr(1-n)Cl3、CsTmCl3、
CsTmnSr(1-n)Cl3、CsTmnMg(1-n)Cl3、CsTmnCa(1-n)Cl3、CsTmnBa(1-n)Cl3、CsTmnEu(1-n)Cl3、
CsTmnYb(1-n)Cl3、CsTmnLa(1-n)Cl3、CsTmnCe(1-n)Cl3、CsTmnPr(1-n)Cl3、CsTmnNd(1-n)Cl3、
CsTmnPm(1-n)Cl3、CsTmnGd(1-n)Cl3、CsTmnTb(1-n)Cl3、CsTmnHo(1-n)Cl3、CsTmnEr(1-n)Cl3Or its any group
It closes.
In some illustrative embodiments of the application, n can be the real number for meeting condition 0 < n < 1.For example, n can be full
The real number of sufficient condition 0 < n≤0.6.In some illustrative embodiments of the application, n can be meet 0.001≤n of condition≤
0.6 real number.In some illustrative embodiments of the application, n can be the real number for meeting condition 0.05≤n≤0.4.So
And the illustrative embodiments of the application are without being limited thereto.
In the application one typical embodiment, a kind of luminescent film is disclosed, by above-mentioned perovskite quantum dot ink system
It forms.In alkane and aromatic hydrocarbons mixed solvent system, the presence of cation dispersing agent improves perovskite quantum dot in ink
In dispersion stabilization.When carrying out inkjet printing, process is smooth, and perovskite quantum dot will not occur to sink to gather, and what is obtained shines
Film uniform ground.
Embodiment 1
Perovskite quantum dot ink, the CsPbBr including 16wt%3Quantum dot, the 1- methylundecane (boiling point of 80wt%
It is 195 DEG C) and diamyl benzene (boiling point is 265 DEG C) mixed solvent, the cetyl trimethylammonium bromide of 4wt%.Wherein, 1- first
The volume ratio of base hendecane and diamyl benzene is 3:1.
Above-mentioned perovskite quantum dot ink, which is placed, carries out inkjet printing, can continuously print more than 1h, and process is smooth, finally
Obtain the luminescent film of even uniform.The luminescent properties of the luminescent film are tested, used blue light backlight initially goes out
Brightness 1000cd/m2, the phototransformation efficiency of luminescent film, emitting brightness, outer quantum yield (EQE) the results are shown in Table 1.
Embodiment 2
Perovskite quantum dot ink, the CH including 12wt%3NH3PbBr3Quantum dot, the 1- methylundecane (boiling of 86wt%
Point is 195 DEG C) and cyclohexyl benzene (boiling point is 240 DEG C) mixed solvent, the cetyl trimethylammonium bromide of 2wt%.Wherein, 1-
The volume ratio of methylundecane and cyclohexyl benzene is 4:1.
Above-mentioned perovskite quantum dot ink, which is placed, carries out inkjet printing, can continuously print more than 1h, and process is smooth, finally
Obtain the luminescent film of even uniform.The luminescent properties of the luminescent film are tested, used blue light backlight initially goes out
Brightness 1000cd/m2, the phototransformation efficiency of luminescent film, emitting brightness, outer quantum yield (EQE) the results are shown in Table 1.
Embodiment 3
Perovskite quantum dot ink, the CH including 13.5wt%3NH3PbI3Quantum dot, the n-dodecane (boiling point of 84wt%
It is 216 DEG C) and cyclohexyl benzene (boiling point is 240 DEG C) mixed solvent, the dodecyl benzyl dimethyl ammonium chloride of 2.5wt%.Its
In, the volume ratio of 1- methylundecane and cyclohexyl benzene is 5:1.
Above-mentioned perovskite quantum dot ink, which is placed, carries out inkjet printing, can continuously print more than 1h, and process is smooth, finally
Obtain the luminescent film of even uniform.The luminescent properties of the luminescent film are tested, used blue light backlight initially goes out
Brightness 1000cd/m2, the phototransformation efficiency of luminescent film, emitting brightness, outer quantum yield (EQE) the results are shown in Table 1.
Embodiment 4
Perovskite quantum dot ink, the CsPbI including 14wt%3Quantum dot, the n-dodecane (boiling point 216 of 83wt%
DEG C) and 1- methyl naphthalene (boiling point is 240 DEG C) mixed solvent, the dodecyl benzyl dimethyl ammonium chloride of 3wt%.Wherein, 1- first
The volume ratio of base hendecane and 1- methyl naphthalene is 4.5:1.
Above-mentioned perovskite quantum dot ink, which is placed, carries out inkjet printing, can continuously print more than 1h, and process is smooth, finally
Obtain the luminescent film of even uniform.The luminescent properties of the luminescent film are tested, used blue light backlight initially goes out
Brightness 1000cd/m2, the phototransformation efficiency of luminescent film, emitting brightness, outer quantum yield (EQE) the results are shown in Table 1.
Embodiment 5
Perovskite quantum dot ink, the CsPbCl including 16wt%3Quantum dot, (boiling point is the n-dodecane of 80.5wt%
216 DEG C) and 1- methyl naphthalene (boiling point is 240 DEG C) mixed solvent, the stearyl dimethyl benzyl ammonium chloride of 3.5wt%.Wherein,
The volume ratio of 1- methylundecane and 1- methyl naphthalene is 6:1.
Above-mentioned perovskite quantum dot ink, which is placed, carries out inkjet printing, can continuously print more than 1h, and process is smooth, finally
Obtain the luminescent film of even uniform.The luminescent properties of the luminescent film are tested, used blue light backlight initially goes out
Brightness 1000cd/m2, the phototransformation efficiency of luminescent film, emitting brightness, outer quantum yield (EQE) the results are shown in Table 1.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Phototransformation efficiency (%) | 80.5 | 82.3 | 83.7 | 83.2 | 81.4 |
| Emitting brightness (cd/m2) | 5597 | 6061 | 6524 | 6248 | 5975 |
| EQE (%) | 41 | 43.9 | 46.5 | 45.1 | 42.3 |
According to table 1, the light conversion efficiency for the luminescent film being made by the application perovskite quantum dot ink is more than
80.5%, emitting brightness is in 5000~7000cd/m2Between, external quantum efficiency EQE is up to 46.5%, shows preferable hair
Optical property.
Although inventor has done more detailed elaboration to the technical solution of the application and has enumerated, it should be understood that for
For those skilled in the art, above-described embodiment is modified and/or the flexible or equivalent alternative solution of use is obvious
, cannot all be detached from the essence of the application spirit, the term occurred in the application be used for elaboration to technical scheme and
Understand, the limitation to the application can not be constituted.
Claims (9)
1. a kind of perovskite quantum dot ink, which is characterized in that including perovskite quantum dot, solvent and cation dispersing agent,
The perovskite quantum dot accounts for 0.1wt%~20wt% of the perovskite quantum dot ink；
The solvent accounts for 70wt%~90wt% of the perovskite quantum dot ink；
The cation dispersing agent accounts for 0.5wt%~10wt% of the perovskite quantum dot ink.
2. perovskite quantum dot ink according to claim 1, which is characterized in that the cation dispersing agent is amine salt
At least one of type, quaternary, heterocyclic type and hello salt form.
3. perovskite quantum dot ink according to claim 1, which is characterized in that the solvent includes at least one alkane
Class solvent and at least one aromatic hydrocarbon solvent, normal atmosphere pressure, the boiling point of the alkane solvents is 180~280 DEG C, described
The boiling point of aromatic hydrocarbon solvent is 200~280 DEG C.
4. perovskite quantum dot ink according to claim 3, which is characterized in that the boiling point of the aromatic hydrocarbon solvent compares institute
It is at least 10 DEG C high to state alkane solvents.
5. perovskite quantum dot ink according to claim 3, which is characterized in that the alkane solvents include saturation or
Unsaturated alkane,
The alkane includes in n-undecane, n-dodecane, n-tridecane, n-tetradecane, n-pentadecane and its isomer
At least one.
6. perovskite quantum dot ink according to claim 3, which is characterized in that the aromatic hydrocarbon solvent include saturation or
Unsaturated aromatic hydrocarbons,
The aromatic hydrocarbons includes amylbenzene, hexyl benzene, diamyl benzene, cyclohexyl benzene, naphthane, 1- methyl naphthalene, dimethylnaphthalene, isopropyl
At least one of base biphenyl, biphenyl, benzyl benzene.
7. perovskite quantum dot ink according to claim 3, which is characterized in that the alkane solvents and the aromatic hydrocarbons
The volume ratio of class solvent is (3~7): 1.
8. perovskite quantum dot ink according to claim 1, which is characterized in that the structure of the perovskite quantum dot is logical
Formula is ABX3, wherein A is at least one monovalent organic cation, at least one monovalent inorganic cation or any combination thereof；B
For at least one divalent inorganic cations；X is at least one halide anion.
9. a kind of luminescent film, which is characterized in that the luminescent film is by any perovskite quantum dot ink of claim 1~8
Water is made.
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| CN110129026A (en) * | 2019-05-30 | 2019-08-16 | 苏州星烁纳米科技有限公司 | Perovskite quantum dot dispersion |
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| CN112391084A (en) * | 2019-08-16 | 2021-02-23 | Tcl集团股份有限公司 | Ink composition |
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