Preparation method of nanocrystal solar battery photoanode
A solar cell and photoanode technology, applied in the field of solar cells, can solve problems such as difficult to obtain optical scattering characteristics, high-efficiency photoanode, small specific surface area of a single microsphere photoanode, etc., to improve light collection efficiency, easy control, and increase open circuit voltage Effect
Active Publication Date: 2011-04-20
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology
[0004] The purpose of the present invention is to provide a simple and feasible method for preparing a novel and efficient nanocrystalline solar cell photoanode, which solves the problem that a single microsphere photoanode has only a small specific surface area, and overcomes the difficulty in obtaining a large specific surface area at the same time. and the difficulty of efficient photoanodes with good optical scattering properties
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Embodiment 1
[0026] Preparation of titanium precursor sol: Dissolve 1.5g of block polymer in 15ml of absolute ethanol, after complete dissolution, add 1.2ml of concentrated hydrochloric acid and 0.2ml of acetylacetone dropwise, stir for 30 minutes; add 7ml of titanium dropwise while stirring After 30 minutes, add 0.2 ml of deionized water; stir at room temperature for 3 hours to obtain a titanium precursor sol.
[0027] Preparation of TiO 2 Composite sol of microspheres and titanium precursor: TiO 2 The nano-microspheres were added to the titanium precursor sol, and ultrasonically dispersed for 30 minutes, so that the TiO 2 The microspheres are fully dispersed and uniform, TiO 2 The mass fraction of nano microspheres is 1.5%.
[0028] Clean the FTO conductive glass: ultrasonically clean the FTO conductive glass in chloroform for 20 minutes, then ultrasonically clean it with acetone for 20 minutes, and continue to ultrasonically clean it in absolute ethanol for 20 minutes, N 2 Blow dry ...
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Abstract
The invention discloses a preparation method of a nanocrystal solar battery photoanode. The preparation method comprises: by using a chemical solution method, taking a block polymer as a template and combining a quick annealing process with a spin-coating method to prepare a mesoporous TiO2 thick film with a large surface area on fluorine-doped stannic oxide conductive glass. TiO2 nanospheres areevenly dispersed in titanium precursor sol and then are dispersed in a TiO2 film after high-temperature heat treatment and tightly contact surrounding nanoparticles; and the finally obtained nanocrystal solar battery photoanode has the large specific surface area of a mesoporous material and the excellent light scattering properties of nanospheres at the same time. The preparation method has the advantages that the nanocrystal solar battery photoanode has higher porosity and larger specific surface area; the method makes use of multiple spin coating and the quick annealing process to control the thickness of the photoanode easily; and the introduction of the TiO2 nanospheres is favorable for increasing the open circuit voltage, short-circuit current density and photoelectric conversion efficiency of a nanocrystal solar battery by increasing the light collection efficiency of the photoanode.
Description
technical field [0001] The invention relates to solar cell technology, in particular to a method for preparing a photoanode of a nanocrystalline solar cell. Background technique [0002] Energy, new materials, biotechnology, and information technology constitute the four pillars of a civilized society. Energy is the main material basis for promoting social development and economic progress, and every progress in energy technology has promoted the development of human society. With the continuous development of economy and society, the depletion of non-renewable energy sources such as coal, oil, and natural gas, and the continuous growth of energy demand, energy issues have become a serious challenge to the survival and development of all human beings. The development of new energy and new energy materials is the golden key to solve the energy crisis and environmental protection problems, and it is a major issue that must be solved for human beings entering the 21st century....
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IPC IPC(8): H01L31/18H01L31/0224
CPCY02P70/50
Inventor 陶俊超陈鑫孙艳戴宁
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI