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Article

Cu(In,Ga)Se2 Solar Cells Integrated with Subwavelength Structured Cover Glass Fabricated by One-Step Self-Masked Etching

1
Photoconversion Material Research Center, Korea Photonics Technology Institute, Gwangju 61007, Korea
2
School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
3
Department of Electrical Engineering, Incheon National University, Yeonsu-gu, Incheon 22012, Korea
4
Department of Electronics Engineering, Dong-A University, Saha-gu, Busan 49315, Korea
*
Authors to whom correspondence should be addressed.
Micromachines 2020, 11(9), 877; https://doi.org/10.3390/mi11090877
Received: 27 August 2020 / Revised: 16 September 2020 / Accepted: 18 September 2020 / Published: 21 September 2020
We report an anti-reflective cover glass for Cu(In,Ga)Se2 (CIGS) thin film solar cells. Subwavelength structures (SWSs) were fabricated on top of a cover glass using one-step self-masked etching. The etching method resulted in dense whiskers with high aspect ratio. The produced structure exhibited excellent anti-reflective properties over a broad wavelength range, from the ultraviolet to the near infrared. Compared to a flat-surface glass, the average transmittance of the glass integrated with the SWSs improved from 92.4% to 95.2%. When the cover glass integrated with the SWSs was mounted onto the top of a CIGS device, the short-circuit current and the efficiency of the solar cell were enhanced by 4.38 and 6%, respectively, compared with a CIGS solar cell without cover glass. View Full-Text
Keywords: subwavelength structure; solar cells; self-masked etching; optical reflection loss; energy harvesting subwavelength structure; solar cells; self-masked etching; optical reflection loss; energy harvesting
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MDPI and ACS Style

Jeong, H.-J.; Kim, Y.-C.; Kim, S.-T.; Choi, M.-H.; Song, Y.-H.; Yun, J.-H.; Park, M.-S.; Jang, J.-H. Cu(In,Ga)Se2 Solar Cells Integrated with Subwavelength Structured Cover Glass Fabricated by One-Step Self-Masked Etching. Micromachines 2020, 11, 877. https://doi.org/10.3390/mi11090877

AMA Style

Jeong H-J, Kim Y-C, Kim S-T, Choi M-H, Song Y-H, Yun J-H, Park M-S, Jang J-H. Cu(In,Ga)Se2 Solar Cells Integrated with Subwavelength Structured Cover Glass Fabricated by One-Step Self-Masked Etching. Micromachines. 2020; 11(9):877. https://doi.org/10.3390/mi11090877

Chicago/Turabian Style

Jeong, Ho-Jung, Ye-Chan Kim, Sung-Tae Kim, Min-Ho Choi, Young-Hyun Song, Ju-Hyung Yun, Min-Su Park, and Jae-Hyung Jang. 2020. "Cu(In,Ga)Se2 Solar Cells Integrated with Subwavelength Structured Cover Glass Fabricated by One-Step Self-Masked Etching" Micromachines 11, no. 9: 877. https://doi.org/10.3390/mi11090877

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