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Cadmium-telluride film solar cell and preparation method

A technology of solar cells and cadmium telluride, applied in the field of solar cells, can solve the problems of scarce materials, high production cost, high cost, etc., and achieve the effects of good quantum efficiency, cost control, and consumption reduction

Inactive Publication Date: 2017-08-11
CNBM CHENGDU OPTOELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the CdTe layer thickness of the commonly used cadmium telluride (CdTe) thin film solar cells is 3 microns to 8 microns. The element Te is a rare element, and the material is rare and expensive, resulting in high production costs of cadmium telluride (CdTe) thin film solar cells. A major factor limiting its development

Method used

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  • Cadmium-telluride film solar cell and preparation method
  • Cadmium-telluride film solar cell and preparation method
  • Cadmium-telluride film solar cell and preparation method

Examples

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Embodiment 1

[0039] Such as figure 1 A cadmium telluride thin-film solar cell shown includes a substrate 1, and a laminated film is arranged on the substrate 1, and the laminated film includes a transparent conductive film 2, a window layer 3, an optical Absorbing layer 4, back contact layer 5, back reflection layer 6, back electrode layer 7, encapsulation material layer 8 and back plate 9; Wherein, described substrate 1 is glass or high molecular polymer, and described high molecular polymer is polyimide; the transparent conductive film 2 is a TCO film; the window layer 3 is a cadmium sulfide film layer with a thickness of 10nm to 200nm; the light absorbing layer 4 is a cadmium telluride film layer with a thickness of 500nm; Described back contact layer 5 is cuprous thiocyanate film layer, and thickness is 20nm; Described back reflection layer 6 is silver film layer, and thickness is 80nm; Described back electrode layer 7 comprises nickel film layer 10 and chromium film layer 11, The bac...

Embodiment 2

[0042] This embodiment is except following feature, and other is all identical with embodiment 1:

[0043] In the preparation method of the cadmium telluride thin-film solar cell in this embodiment: the window layer 3 and the light absorbing layer 4 are deposited by the near-space sublimation method, the back contact layer 5 is deposited by thermal evaporation, and the thermal evaporation deposition evaporates The source temperature is 600° C., and the evaporation pressure is 300 Pa.

Embodiment 3

[0045] This embodiment is except following feature, and other is all identical with embodiment 1:

[0046] In the preparation method of the cadmium telluride thin-film solar cell in this embodiment: the window layer 3 and the light absorbing layer 4 are deposited by the near-space sublimation method, the back contact layer 5 is deposited by thermal evaporation, and the thermal evaporation deposition evaporates The source temperature is 300° C., and the evaporation pressure is 10 Pa.

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Abstract

The invention discloses a cadmium-telluride film solar cell, and the cell comprises a substrate. The substrate is provided with a laminated film, and the laminated film sequentially comprises a transparent conductive film, a window layer, a light absorption layer, a back contact layer, a back reflection layer and a back electrode layer from the bottom to the top. The window layer is a cadmium sulfide film layer, and the light absorption layer is a cadmium telluride film layer. The back contact layer is a cuprous thiocyanate film layer, and the back reflection layer is a silver thin layer. The cell reduces the thickness of the light absorption layer on the basis of guaranteeing the absorption efficiency of sunlight, reduces the consumption of Te raw materials, reduces the production cost, and is high in feasibility of batch growth.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a cadmium telluride thin-film solar cell and a preparation method. Background technique [0002] Driven by the requirements of society, environment, energy and sustainable development, the promotion and application of new energy has become a global consensus. Solar energy, as the most important renewable energy in new energy, occupies an important position in the future development. Thin-film solar cells mainly include amorphous silicon, cadmium telluride, copper indium gallium selenide, and dye-sensitized materials. Due to the low consumption of materials, there is a consensus that there is a large space for cost reduction, and it is increasingly favored by countries all over the world. Much attention. [0003] Among them, the cadmium telluride (CdTe) thin film solar cell is mainly composed of a light absorbing layer CdTe layer and a window layer CdS layer, and the light a...

Claims

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Application Information

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IPC IPC(8): H01L31/056H01L31/0224H01L31/0296H01L31/18
CPCH01L31/022441H01L31/0296H01L31/056H01L31/1828Y02E10/52Y02E10/543Y02P70/50
Inventor 马立云彭寿潘锦功殷新建蒋猛
Owner CNBM CHENGDU OPTOELECTRONICS MATERIAL
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