Research on laser-induced local spectral response of CdTe solar cell

ZHENG Yujie; ZHOU Biao; YANG Xiutao; ZHANG Jingquan; WANG Wenwu; ZHANG Wangzhi; ZHANG Hongguo; ZENG Guanggen

doi:10.7510/jgjs.issn.1001-3806.2023.01.013

LASER TECHNOLOGY > 2023 > 47(1): 87-91. > DOI: 10.7510/jgjs.issn.1001-3806.2023.01.013

ZHENG Yujie, ZHOU Biao, YANG Xiutao, ZHANG Jingquan, WANG Wenwu, ZHANG Wangzhi, ZHANG Hongguo, ZENG Guanggen. Research on laser-induced local spectral response of CdTe solar cell[J]. LASER TECHNOLOGY, 2023, 47(1): 87-91. DOI: 10.7510/jgjs.issn.1001-3806.2023.01.013

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Research on laser-induced local spectral response of CdTe solar cell

1.
College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China
2.
InfiRay Microsystem Technology Co. Ltd., Chengdu 610299, China
3.
Jiangsu Pengju Semiconductor Equipment Technology Company Limited, Nantong 226010, China

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Received Date: November 30, 2021
Revised Date: January 18, 2022
Published Date: January 24, 2023

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Abstract

Abstract

In order to reflect the distribution of the performance of each region on the geometric scale of the device, a laser beam with a wavelength of 852 nm and an adjustable focusing area was used to act on the surface of the P-N junction microregion of the CdTe thin-film solar cell to generate a localized induced photocurrent. By setting the step-by-step method of the sample stage, the micro-region spectral response distribution map of the measured device within the geometric area range was obtained, and a more intuitive device current distribution uniformity and P-N junction characteristics were obtained. The results show that the relationship between the deposition and post-processing parameters and material properties that are closely related to the CdS/CdTe heterojunction fabrication technology can be simplified and cost-effectively established by using this test method, and then the heterojunction interface distribution uniformity and solar cells can be obtained. The corresponding relationship of the uniformity of I-V characteristic parameters provides experimental test basis for improving the performance of solar cells.
- laser technique,
- local spectral response,
- laser-induced,
- CdTe thin-film solar cell

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