Method for preparing Cd1-xMnxSe quantum dot solar cell

A technology for solar cells and quantum dots, applied in the field of solar cells, can solve the problems of low efficiency of quantum dot solar cells, and achieve wide application prospects and research value, high efficiency, and the effects of improving absorption strength and absorption efficiency.

Active Publication Date: 2014-10-08
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the efficiency of quantum dot solar cells is still low, how to improve

Method used

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  • Method for preparing Cd1-xMnxSe quantum dot solar cell
  • Method for preparing Cd1-xMnxSe quantum dot solar cell
  • Method for preparing Cd1-xMnxSe quantum dot solar cell

Examples

Experimental program
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Embodiment 1

[0019] a) oxides with a particle size of 10-80nm (including TiO 2 , ZnO, SnO 2 or Zn 2 SnO 4 ) The powder and solvent are prepared into slurries of different concentrations; b) The above-mentioned slurries are evenly coated on the FTO or ITO glass substrate by the doctor blade method, and sintered at 300-500°C for 10-60min to obtain 4-20μm thick Nanoporous photoanode film; c) cadmium acetate (Cd(CH 3 COO) 2 2H 2 O) in deionized water, 0.1M manganese acetate (Mn(CH 3 COO) 2 4H 2 O) in deionized water, 0.1M sodium selenosulfate (Na 2 SeSO 3 ) in deionized water, 0.1M trisodium nitrilotriacetate (N(CH 2 COONa) 3 ) in a deionized aqueous solution; d) according to the volume ratio (1-x):x:1:2 (x=0.2) mixed evenly, configured as a reaction solution; e) vertically soak the photoanode in the reaction solution, avoid Quantum dots were adsorbed by chemical bath deposition under light conditions, the reaction temperature was 25°C, and the reaction time was 3.0h; f) Washed wit...

Embodiment 2

[0024] a) TiO with a particle size of 25nm 2 The powder and solvent are prepared into a slurry; b) the above slurry is evenly coated on the FTO glass substrate by the doctor blade method, and sintered at 500°C for 30 minutes to prepare a nanoporous photoanode film with a thickness of 10 μm; c) respectively arrange Cd 2+ source of deionized water, Mn 2+ Source of deionized water, sodium selenosulfate (Na 2 SeSO 3 ) in deionized aqueous solution, trisodium nitrilotriacetate (N(CH 2 COONa) 3 ) in a deionized aqueous solution with a concentration of 0.03-0.50M; d) mix uniformly according to the volume ratio (1-x):x:1:2 (x=0-0.8), and prepare a reaction solution; e) put the photoanode Immerse vertically in the reaction solution, absorb quantum dots by chemical bath deposition method under dark conditions, the reaction temperature is 5-40 °C, and the reaction time is 1-5h; f) Wash with deionized water and dry to obtain Cd 1-x mn x Se (x=0~0.8) photoanode of quantum dot solar c...

Embodiment 3

[0029] a) TiO with a particle size of 25nm 2 The powder and the solvent are prepared into a slurry; b) the above slurry is uniformly coated on the FTO glass substrate by the doctor blade method, and sintered at 500 ° C for 30 minutes to prepare a nanoporous photoanode film with a thickness of 10 μm; c) the concentration of each preparation is 0.1M cadmium acetate (Cd(CH 3 COO) 2 2H 2 O) in deionized water, 0.1M manganese acetate (Mn(CH 3 COO) 2 4H 2 O) in deionized water, 0.1M sodium selenosulfate (Na 2 SeSO 3 ) in deionized water, 0.1M trisodium nitrilotriacetate (N(CH 2 COONa) 3 ) in a deionized aqueous solution; d) according to the volume ratio (1-x):x:1:2 (x=0.2) mixed evenly, configured as a reaction solution; e) vertically soak the photoanode in the reaction solution, avoid Quantum dots were adsorbed by chemical bath deposition under light conditions, the reaction temperature was 25°C, and the reaction time was 3.0h; f) Washed with deionized water and dried to o...

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Abstract

The invention belongs to the technical fields of solar cells and energy resources, and particularly relates to a method for preparing a Cd1-xMnxSe quantum dot solar cell. The method includes the steps that TiO2, ZnO, SnO2 or Zn2SnO4 porous photo-anodes 4-20 micrometers in film thickness are stood in a reaction solution having the molar concentration ranging from 0.03 to 0.50 and composed of Cd2+, Mn2+ and Se sources and controlled release formulations according to a specific proportion, a reaction is carried out for 1-5 hours at 5-40 DEG C under the light shading condition, and Cd1-xMnxSe quantum dots are formed at the original positions of the surfaces of oxide particles of the porous photo-anodes, wherein the x ranges form 0 to 0.8. Photo-anode thin film carrying the quantum dots, the polysulfide electrolytes having the molar concentration ranging from 0.1 to 3.0 and Cu2S counter electrodes are assembled to form the quantum dot solar cell. The efficient quantum dot solar cell is obtained and is simple in preparation process, low in cost, prone to achieving batch production, wide in application prospect and high in research value.

Description

technical field [0001] The invention belongs to the technical field of solar cells and relates to a Cd 1-x mn x The preparation method of Se quantum dot solar cell. Background technique [0002] With the rapid development of the world economy, people's demand for energy is increasing day by day. As non-renewable energy, fossil energy can no longer meet the global energy consumption; on the other hand, the extensive use of fossil energy will cause global warming and environmental pollution. Therefore, it is a common goal of all countries in the world to seek renewable energy that can be used efficiently and is environmentally friendly. Solar energy, as a clean and renewable energy source, has attracted widespread attention and is considered to be the best substitute for traditional energy sources. [0003] According to the different materials used, solar cells can be divided into: silicon-based solar cells, compound thin-film solar cells, photochemical solar cells (includi...

Claims

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Application Information

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IPC IPC(8): H01G9/20
Inventor 田建军吕丽丽沈婷刘晓光李波
Owner UNIV OF SCI & TECH BEIJING
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