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Sodium-potassium co-doping technology for preparing high-efficiency copper indium gallium selenide solar cell

A solar cell, copper indium gallium selenide technology, applied in the field of solar cells

Inactive Publication Date: 2016-06-01
SUZHOU RUISHENG SOLAR ENERGY TECH
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  • Sodium-potassium co-doping technology for preparing high-efficiency copper indium gallium selenide solar cell

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[0015] The above description is only an overview of the technical solutions of the present invention. In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following specific descriptions are given in conjunction with specific implementation examples as follows:

[0016] In order to realize the common doping of sodium ions and potassium ions in the CIGS absorption layer, we propose four technical solutions in the present invention:

[0017] 1. Doping sodium and potassium ions in the Mo layer (002) of the metal back electrode.

[0018] The molybdenum layer (002) of the metal back electrode is generally obtained by sputtering a metal molybdenum (Mo) target. In order to achieve the co-doping of sodium ions and potassium ions in the CIGS absorption layer, the compound containing sodium ions and potassium ions Doped into Mo targets, this compound can be sodium molybdate and potassium molybdate, or other sodium and potassium compounds, a...

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Abstract

The invention relates to a sodium-potassium co-doping technology for preparing a high-efficiency copper indium gallium selenide solar cell. The copper indium gallium selenide (CIGS for short) thin film solar cell becomes a solar cell technique with the most development potential due to various advantages. During the preparation process of the CIGS solar cell, the photoelectric conversion efficiency of the cell can be improved by doping of alkali metal ions. The patent proposes a novel technology, sodium ions and potassium ions are co-doped in a CIGS absorption layer, and thus, the photoelectric conversion efficiency of the CIGS solar cell is further improved. The patent also proposes four technical schemes to achieve co-doping of the sodium ions and the potassium ions, and the four technical schemes are suitable for different CIGS absorption layer deposition technologies.

Description

Technical field [0001] The invention belongs to the field of solar cells, and relates to a copper indium gallium selenium (CIGS) thin film solar cell device. Background technique [0002] All energy comes from energy, and human life cannot do without energy. After entering the 21st century, the current technologically developable energy resources of mankind will face a crisis of serious shortage, especially now that fossil fuel resources such as coal, oil and natural gas are increasingly depleted, and can only last for decades. Therefore, we must find sustainable alternative new energy. In addition, the use of fossil fuels such as coal, oil, and natural gas will also bring about a series of environmental problems: global greenhouse effect makes global temperature rise, sea level rise; air pollution; drought, desertification; exhaust gas, waste , A large amount of waste liquid is discharged, causing serious pollution of the human environment. [0003] Therefore, looking for clean...

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Application Information

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IPC IPC(8): H01L21/22H01L21/225H01L31/18
CPCH01L21/2205H01L21/225H01L31/1864Y02E10/50Y02P70/50
Inventor 刘德昂钱磊章婷冯宗宝欧阳
Owner SUZHOU RUISHENG SOLAR ENERGY TECH
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