Preparation method of Cu/Ca doped cadmium sulfide co-sensitizer for solar battery

A solar cell and solar cell technology, which is applied in the solar field to achieve the effects of increasing short-circuit current, reducing dark current and rapid separation

Inactive Publication Date: 2014-03-12
BEIJING INFORMATION SCI & TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, the work of improving the performance parameters of solar cells by co-sensitizing CdS quantum dots with Cu and Ca as sensitizers by the SILAR method has not been reported yet.

Method used

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  • Preparation method of Cu/Ca doped cadmium sulfide co-sensitizer for solar battery
  • Preparation method of Cu/Ca doped cadmium sulfide co-sensitizer for solar battery
  • Preparation method of Cu/Ca doped cadmium sulfide co-sensitizer for solar battery

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Experimental program
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Effect test

Embodiment 1

[0026] The specific steps of the copper-doped / calcium-doped cadmium sulfide co-sensitizer preparation method are:

[0027] 1) Equipped with Cd(NO at a concentration of 0.1M 3 ) 2 solution and Na 2 S solution, placed in a water bath at 20-50°C for 30-60min;

[0028] 2) CuCl 2 Add the Cd(NO 3 ) 2 solution, in which Cu 2+ with Cd 2+ The molar concentration ratio is 1:1;

[0029] 3) Ca(NO 3 )2 Add the Cd(NO 3 ) 2 solution, where Ca 2+ with Cd 2+ The molar concentration ratio is 1:1;

[0030] 4) Put the solutions obtained in step 2) and step 3) into a water bath at 30° C. for 30 minutes;

[0031] 5) The photoanode material TiO to be sensitized 2 Immerse in the solution prepared in step 2) for 5 minutes, take it out, clean it with the corresponding solvent, and dry it with nitrogen;

[0032] 6) Immerse the photoanode material obtained in step 5) into the Na prepared in step 1) 2 In the S solution for 5 minutes, take it out, clean it with the corresponding solvent, a...

Embodiment 2

[0036] The specific steps of the copper-doped / calcium-doped cadmium sulfide co-sensitizer preparation method are:

[0037] 1) Equipped with Cd(NO at a concentration of 0.1M 3 ) 2 solution and Na 2 S solution, placed in a water bath at 20-50°C for 30-60min;

[0038] 2) CuCl 2 Add the Cd(NO 3 ) 2 solution, in which Cu 2+ with Cd 2+ The molar concentration ratio is 1:500;

[0039] 3) Ca(NO 3 ) 2 Add the Cd(NO 3 ) 2 solution, where Ca 2+ with Cd 2+ The molar concentration ratio is 1:500;

[0040] 4) Put the solutions obtained in step 2) and step 3) into a water bath at 30° C. for 30 minutes;

[0041] 5) The photoanode material TiO to be sensitized 2 Immerse in the solution prepared in step 2) for 5 minutes, take it out, clean it with the corresponding solvent, and dry it with nitrogen;

[0042] 6) Immerse the photoanode material obtained in step 5) into the Na prepared in step 1) 2 In the S solution for 5 minutes, take it out, clean it with the corresponding solv...

Embodiment 3

[0046] The specific steps of the copper-doped / calcium-doped cadmium sulfide co-sensitizer preparation method are:

[0047] 1) Equipped with Cd(NO at a concentration of 0.1M 3 ) 2 solution and Na 2 S solution, placed in a water bath at 20-50°C for 30-60min;

[0048] 2) CuCl 2 Add the Cd(NO 3 ) 2 solution, in which Cu 2+ with Cd 2+ The molar concentration ratio is 1:1000;

[0049] 3) Ca(NO 3 ) 2 Add the Cd(NO 3 ) 2 solution, where Ca 2+ with Cd 2+ The molar concentration ratio is 1:1000;

[0050] 4) Put the solutions obtained in step 2) and step 3) into a water bath at 30° C. for 30 minutes;

[0051] 5) The photoanode material TiO to be sensitized 2 Immerse in the solution prepared in step 2) for 5 minutes, take it out, clean it with the corresponding solvent, and dry it with nitrogen;

[0052] 6) Immerse the photoanode material obtained in step 5) into the Na prepared in step 1) 2 In the S solution for 5 minutes, take it out, clean it with the corresponding so...

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Abstract

The invention relates to a preparation method of a Cu / Ca doped CdS co-sensitizer for a solar battery. The method comprises the steps of doping Cu impurity atoms to a CdS semiconductor quantum dot, and then, assembling a quantum dot sensitized solar battery by taking the Cu impurity atom doped CdS semiconductor quantum dot and a Ca impurity atom doped CdS semiconductor quantum dot as co-sensitizers. Electron holes can be more rapidly separated through optimizing the transmission paths of charges inside the battery, so that electrons are more effectively injected to a TiO2 conduction band, the dark current is reduced, and the short-circuit current density, open-circuit voltage and photoelectric conversion efficiency of the solar battery are increased. The method is simple, easy to operate, low in cost and capable of realizing large-area production.

Description

technical field [0001] The invention belongs to the technical field of solar energy, and more specifically relates to a method for preparing a copper-doped / calcium-doped cadmium sulfide co-sensitizer for solar cells. Background technique [0002] With the rapid development of the global economy, the continuous growth of population and the gradual deepening of human dependence on energy, energy crisis and environmental pollution have become the primary problems facing human beings in the 21st century. Facing the depletion of global petrochemical energy, inexhaustible solar energy is undoubtedly the first choice for human future energy development. Therefore, using solar energy as a source of new energy supply has attracted the most attention, and it has received close attention from all walks of life in terms of technological development process and future prospects. A device that directly converts light energy into electrical energy through the photoelectric effect is a sol...

Claims

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Application Information

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IPC IPC(8): H01G9/032
Inventor 邹小平刘岩周烽
Owner BEIJING INFORMATION SCI & TECH UNIV
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