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Highly-effective laminate solar battery and method for making same

A technology of solar cells and solar cells, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems such as inherent defects and limitations of stacked solar cells, improve quality and performance, avoid the influence of temperature-sensitive layers, The effect of overcoming the dilemma of high temperature process

Inactive Publication Date: 2008-01-02
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the tandem solar cells with this early integrated structure have limitations and inherent defects.

Method used

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  • Highly-effective laminate solar battery and method for making same
  • Highly-effective laminate solar battery and method for making same
  • Highly-effective laminate solar battery and method for making same

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1: Preparation of CdZnTe / CIGS tandem solar cell

[0038] 1. Narrow bandgap Cu(In, Ga)Se 2 Fabrication of (CIGS) Thin Film Solar Cell

[0039] (1) According to the post-sputtering selenization method for making CIGS solar cells, a single-layer narrow-bandgap CIGS thin-film solar cell was prepared. (2) The glass substrate was ultrasonically cleaned with acetone, alcohol, and deionized water for 15 minutes respectively, and then dried with pure nitrogen. Use a magnetron sputtering system to sputter a layer of metal molybdenum of about 1 μm as the back electrode of the battery; (3) sputter a copper indium alloy target on the molybdenum film, coat a layer of about 0.6 μm copper indium prefabricated layer, and then Using two-step selenization, the first step of selenization temperature is 200°C, time 25mins, the second step selenization temperature is 450°C, time 25mins, to obtain a copper indium selenium thin film with an energy gap of 1.0eV, with a thickness of...

Embodiment 2

[0044] Example 2: CGS / CIGS tandem solar cell

[0045] According to the post-sputtering selenization method for making CIGS series solar cells, wide bandgap CGS and narrow bandgap CIGS thin film solar cells are prepared simultaneously. (1) A double-sided FTO glass substrate was ultrasonically cleaned with acetone, alcohol, and deionized water for 15 minutes, and then dried with nitrogen; (2) firstly, SnO 2 : On the F film layer, a copper-gallium prefabricated layer of about 0.6 μm is plated on the copper-gallium alloy target by sputtering, and then the double-sided FTO glass is coated with SnO 2 : Copper-indium alloy target is sputtered on the F film layer, and a layer of about 0.6 μm copper-indium prefabricated layer is plated. Finally, the copper-gallium prefabricated layer and the copper-indium prefabricated layer are selenized simultaneously by two-step method. The first step is to selenize the copper-indium prefabricated layer. The selenization temperature is 250°C for 30...

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Abstract

The invention relates to a high-effect laminated solar-energy battery and a relative production, which can improve the utilization of solar energy and the photoelectric conversion efficiency of solar-energy battery, belonging to the solar-energy battery and production technical field. The invention is composed of a top solar-energy battery and a transparent battery of bottom solar-energy battery which are adhered via sealing glue, or the top and bottom share one glass baseboard, wherein the top solar-energy battery is leaded out a couple of electrodes, and the bottom solar-energy battery is leaded out another couple of electrodes, to form a laminated solar-energy battery with four terminal structures. The invention can realize the best match of solar-energy battery, to improve the photoelectric conversion efficiency of solar-energy battery, and improve the quality and property of solar-energy battery. The invention can effectively resolve the problems of single solar-energy battery as narrow spectrum adsorption range and low light adsorption utilization efficiency, to effectively improve the spectrum adsorption of solar-energy battery and improve the photoelectric conversion efficiency, while the photoelectric conversion efficiency can reach 25-30%.

Description

technical field [0001] The invention relates to a high-efficiency laminated solar cell and a preparation method thereof, which can greatly improve the utilization efficiency of solar energy and the photoelectric conversion efficiency of the solar cell, and belongs to the technical field of solar cells and their preparation. Background technique [0002] A solar cell is a component that directly converts light energy into electrical energy. Its basic structure is to use semiconductor materials to form a P-N. When light is irradiated on the solar cell, a hole-electron pair is generated inside the semiconductor. The electrons (holes) on both sides of the P-N junction are drawn out through the electrodes to form an electric current. [0003] Due to the wide energy distribution in the sunlight spectrum, any existing semiconductor material can only absorb photons with energy higher than its energy gap value. The photons with lower energy in sunlight will pass through the battery,...

Claims

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Application Information

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IPC IPC(8): H01L31/042H01L31/18H01L31/0725H01L31/0749
CPCY02E10/50Y02E10/541Y02P70/50
Inventor 黄素梅孙卓许修兵褚家宝陈奕卫
Owner EAST CHINA NORMAL UNIV
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