CN104716262A - Organic solar cell with ultra-thin nanosheets film as interlayers - Google Patents

Organic solar cell with ultra-thin nanosheets film as interlayers Download PDF

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Publication number
CN104716262A
CN104716262A CN201310691145.6A CN201310691145A CN104716262A CN 104716262 A CN104716262 A CN 104716262A CN 201310691145 A CN201310691145 A CN 201310691145A CN 104716262 A CN104716262 A CN 104716262A
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CN
China
Prior art keywords
layer
organic solar
intermediate layer
solar batteries
batteries according
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Pending
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CN201310691145.6A
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Chinese (zh)
Inventor
张坚
李�灿
周玲玉
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Dalian Institute of Chemical Physics of CAS
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Dalian Institute of Chemical Physics of CAS
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Priority to CN201310691145.6A priority Critical patent/CN104716262A/en
Publication of CN104716262A publication Critical patent/CN104716262A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Abstract

The invention relates to an organic solar cell. The organic solar cell is provided with a photosensitive layer, a cathode and an anode, wherein the photosensitive layer is composed of a p type semiconductor and an n type semiconductor, and the cathode and the anode are arranged at the two sides of the photosensitive layer respectively. The organic solar cell is characterized in that ultra-thin nanosheet films are arranged between the cathode and the photosensitive layer and between the anode and the photosensitive layer, and thus the efficiency of the organic solar cell can be remarkably improved.

Description

Nanometer sheet ultrathin membrane is as the organic solar batteries in intermediate layer
Technical field
The present invention relates to a kind of nanometer sheet ultrathin membrane that adopts as the organic solar batteries in intermediate layer.
Background technology
In recent years, organic solar batteries due to its preparation method simple, with low cost, the advantages such as quality is frivolous obtain to be paid close attention to widely.In organic solar batteries, directly contact with anode with the negative electrode of battery with n-type semiconductor in order to avoid p-type semiconductor and reduce solar cell energy conversion efficiency, between active layer and two electrodes, adding intermediate layer be absolutely necessary.Intermediate layer material conventional at present has poly-3,4-ethylene dioxythiophene: poly styrene sulfonate (PEDOT:PSS) and the oxide such as molybdenum trioxide and vanadic oxide.The PEDOT:PSS aqueous solution, in acid, have certain corrosiveness to ITO substrate, is unfavorable for the long-time stability of battery, and MoO 3and V 2o 5by the method such as vacuum evaporation or sputtering film forming, need be unfavorable for the low cost of battery Deng oxide, prepared by large area.Seek efficient, stable, and the intermediate layer material of energy liquid phase film forming is extremely urgent.
Research finds, nanometer sheet material has the performance of many excellences compared with its body phase material: large specific area, small-size effect and macro quanta tunnel effect etc., makes it have important application in fields such as electronics, optics, magnetics, catalysis.And the preparation method of nanometer sheet material is comparatively simple, the technology such as ultrasonic stripping or embedding lithium stripping can be adopted layer structure material to be peeled off into the thick nanometer sheet material of 0.1-5nm.In recent years, more existing articles and patent all report preparation method (Science, 2011,331,568 of two-dimensional nano sheet; NATURE NANOTECHNOLOGY, 2011,6,200; ACS NANO, 2012,6,3468; ).Current employing LBL self-assembly nanometer sheet ultrathin membrane there is not yet report as the organic solar batteries in intermediate layer.
In sum, in existing document or patent, utilize autonomous packing technique layer by layer that the nanometer sheet of stratified material is prepared into ultrathin membrane, and it can be used as research or a blank in the intermediate layer of organic solar batteries.The present invention utilizes the nanometer sheet ultrathin membrane of stratified material to prepare anode intermediate layer or cathode interlayer, thus increases substantially photo-generated carrier collection efficiency in organic solar batteries, and then improves the photoelectric energy transformation efficiency of organic solar batteries.
Summary of the invention
Technical problem to be solved by this invention is to invent the organic solar batteries of a kind of nanometer sheet ultrathin membrane as male or female boundary layer.
The preparation method of ultrathin membrane: adopt LBL self-assembly (Layer-by-Layer) technology to be prepared into film in substrate the dispersion liquid of nanometer sheet.
Advantage of the present invention:
Contrast traditional organic solar batteries, the nanometer sheet ultrathin membrane preparation method in the present invention be simple, with low cost, stable performance.Adopt nanometer sheet ultrathin membrane can be improved significantly as the photoelectric conversion efficiency of the organic solar batteries in intermediate layer.
Accompanying drawing explanation
Fig. 1 is the structural representation of nanometer sheet ultrathin membrane of the present invention as the organic solar batteries of the normal configuration (normal structure) in intermediate layer.A is substrate.
Fig. 2 is with the structural representation of nanometer sheet ultrathin membrane of the present invention as the organic solar batteries of the transconfiguration (inverted structure) in intermediate layer.A is substrate.
Fig. 3 is stannic oxide/graphene nano sheet that Au nano particle supports prepares normal configuration organic solar batteries J-V curve as anode interface layer.
Fig. 4 is that TiOx nano sheet prepares the J-V curve of transconfiguration organic solar batteries as cathode interface layer.
Embodiment
Embodiment 1
(1) transparent conductive substrate adopted in experiment is ito glass, first wipes clean with acetone, then uses each ultrasonic cleaning 30min of acetone, isopropyl alcohol, ethanol, dry up for subsequent use with high pure nitrogen.
(2) the graphene oxide ultrasonic disperse supported by Au is in ultra-pure water, then its supernatant of centrifuging and taking, obtains the aqueous solution of its two-dimensional nano sheet.
(3) adopt the method for Layer-by-Layer, on ITO substrate, above-mentioned nanometer sheet is assembled into film, concrete grammar be first by ITO at UV-O 315min is processed in cleaning instrument, then be placed in the PDDA aqueous solution of 0.2% and soak 20min, rinse with clear water after taking-up, be placed on again after high pure nitrogen dries up in the graphene oxide water solution that Au supports and soak 20min, rinse with clear water after taking-up, high pure nitrogen dries up for subsequent use.
(4) nanometer sheet ultrathin membrane above-mentioned steps prepared carries out annealing in process, removes water.
(5) under inert gas shielding, Tu photosensitive layer P3HT:PC is revolved on the above-mentioned films 61bM, and under an inert atmosphere solvent annealing in process is carried out to photosensitive layer.
(6) preparation of electrode: at photosensitive layer surface evaporation metal electrode Ca/Al.
(7) battery performance illustrates: short circuit current Jsc=10.35mA/cm 2; Open circuit voltage Voc=0.60V; Fill factor, curve factor FF=0.54; Energy conversion efficiency PCE (%)=3.35%.
Embodiment two:
(1) ito glass is cleaned, with embodiment 1.
(2) by titanate H protonated for the stratiform of preparation 0.7ti 1.825o 4h2O ion-exchanger TBAH auxiliary under by ultrasonic disperse in ultra-pure water, then its supernatant of centrifuging and taking, obtains the aqueous solution of its two-dimensional nano sheet.
(3) adopt the method for Layer-by-Layer, on ITO substrate, above-mentioned nanometer sheet is assembled into film, concrete grammar be first by ITO at UV-O 3process 15min in cleaning instrument, be then placed in the PDDA aqueous solution of 0.2% and soak 10min, rinse, be placed in above-mentioned solution again and soak 10min after high pure nitrogen dries up after taking-up with clear water, rinse with clear water after taking-up, high pure nitrogen dries up for subsequent use.
(4) TiOx nano sheet ultrathin membrane above-mentioned steps prepared carries out annealing in process, removes water.
(5) under inert gas shielding, Tu photosensitive layer P3HT:PC is revolved on the above-mentioned films 61bM, and under an inert atmosphere thermal anneal process is carried out to photosensitive layer.
(6) preparation of electrode: at photosensitive layer surface evaporation metal electrode MoO 3/ Ag.
(7) battery performance illustrates: short circuit current Jsc=11.63mA/cm 2; Open circuit voltage Voc=0.55V; Fill factor, curve factor FF=0.67; Energy conversion efficiency PCE (%)=4.27%.

Claims (9)

1. adopt nanometer sheet ultrathin membrane as the organic solar batteries in intermediate layer, comprise anode (1) and negative electrode (5) that stratiform is superimposed with each other, and the photosensitive layer (3) between anode (1) and negative electrode (5), intermediate layer (2) is set between anode (1) and photosensitive layer (3), cathode interlayer (4) is set between described negative electrode and described photosensitive layer, it is characterized in that:
One deck is had at least to be nanometer sheet ultrathin membrane in described intermediate layer (2) and (4).
2. organic solar batteries according to claim 1, is characterized in that:
Described intermediate layer (2) main conduction hole and directly contacting with described anode, described photosensitive layer (3) directly contacts with intermediate layer (2), the constituent material of photosensitive layer (3) comprises p-type semiconductor material and the n-type semiconductor of pairing, and its mass ratio is 10:1-1:10;
Described cathode interlayer (4) main conduction electronics and directly contacting with photosensitive layer (3), described negative electrode (5) directly contacts with cathode interlayer (4).
3. organic solar batteries according to claim 1, is characterized in that: the composition material of described intermediate layer (2) is MoO 3, WO 3, V 2o 5, MoS 2, MoSe 2, the Graphene that supports of the Graphene that supports of the Graphene that supports of the Graphene that supports of the Graphene that supports of the Graphene that supports of golden nanometer particle and derivative thereof, Nano silver grain and derivative thereof, nano platinum particle and derivative thereof, gold-silver alloy nanoparticles and derivative thereof, plation nano particle and derivative thereof or silver-platinum alloy nano particle and derivative thereof, and two or more compound in above-mentioned material.
4. organic solar batteries according to claim 1, is characterized in that: the composition material of described intermediate layer (4) is H 0.7ti 1.825o 4h 2o, H 1.07ti 1.73o 4h 2o, HTi 1.75o 4h 2o, H 0.93ti 1.77o 4h 2o, or the layered titanate of boron, nitrogen, phosphorus, gold, silver and platinum dopant, or Ca 2nb 3o 10 -, Ti 2nbO 7 -, and Ti 5nbO 14 3-, or hydrotalcite layered double hydroxide, and two or more compound in above-mentioned material.
5. organic solar batteries according to claim 1, is characterized in that: described intermediate layer (2) adopt LBL self-assembly (Layer-by-Layer) technology to be prepared into film in substrate.
6. the organic solar batteries according to claim 3 or 5, it is characterized in that: the composition material of intermediate layer (2) is directly prepared into nanometer sheet dispersion liquid, then adopt LBL self-assembly (Layer-by-Layer) technology to be prepared into film in substrate nanometer sheet dispersion liquid.
7. organic solar batteries according to claim 1, is characterized in that: described intermediate layer (4) adopt LBL self-assembly (Layer-by-Layer) technology to be prepared into film in substrate.
8. the organic solar batteries according to claim 4 or 7, it is characterized in that: the composition material of intermediate layer (4) is directly prepared into nanometer sheet dispersion liquid, then adopt LBL self-assembly (Layer-by-Layer) technology to be prepared into film in substrate nanometer sheet dispersion liquid.
9. organic solar batteries according to claim 1, is characterized in that: described intermediate layer (2) is 0.1nm-100nm with the thickness range in intermediate layer (4).
CN201310691145.6A 2013-12-13 2013-12-13 Organic solar cell with ultra-thin nanosheets film as interlayers Pending CN104716262A (en)

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CN110760881A (en) * 2019-11-29 2020-02-07 南开大学 Organic photocathode taking copper nanosheet as supporting framework and preparation method thereof
CN111704814A (en) * 2020-03-16 2020-09-25 重庆大学 Annealing-free high-conductivity molybdenum oxide coating capable of being processed in solution and preparation method of film

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110760881A (en) * 2019-11-29 2020-02-07 南开大学 Organic photocathode taking copper nanosheet as supporting framework and preparation method thereof
CN110760881B (en) * 2019-11-29 2021-03-26 南开大学 Organic photocathode taking copper nanosheet as supporting framework and preparation method thereof
CN111704814A (en) * 2020-03-16 2020-09-25 重庆大学 Annealing-free high-conductivity molybdenum oxide coating capable of being processed in solution and preparation method of film
CN111704814B (en) * 2020-03-16 2022-02-22 重庆大学 Annealing-free high-conductivity molybdenum oxide coating capable of being processed in solution and preparation method of film

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