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Proceedings Paper

Programmable quasi-random nanostructured coating with omnidirectional broadband improvement for photon management (Conference Presentation)
Author(s): Yihong Zhao; Ming Zhu; Shengjie Zhai; Hui Zhao

Paper Abstract

As the known of the Shockley-Queasier limit, over 90% of widely used silicon crystalline based solar cell only achieve 30% theoretical efficiency. To maximize the light-harvesting, the solar cell’s light-trapping structures must be broadband, omnidirectional, and polarization-insensitive. Quasi-random structures emerge as an ideal candidate since they combine the broadband wide-angle absorption enhancement and strong, customizable enhancement for desired wavelength windows. Herein, we demonstrated a kind of designed quasi-random structures, which were designed by topology optimization based on mathematical algorithms and directly fabricated the final products to achieve high efficiency. The best structure (Rudin-Shapiro) could reduce 11% on reflectance and improve 14% short circuit current which led 13% PCE improvement. Meanwhile, the results also exhibited ~10% efficiency improvement in a wide incident angle range (0-65 degree).

Paper Details

Date Published: 10 March 2020
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Proc. SPIE 11289, Photonic and Phononic Properties of Engineered Nanostructures X, 112891U (10 March 2020); doi: 10.1117/12.2546793
Show Author Affiliations
Yihong Zhao, Univ. of Nevada, Las Vegas (United States)
Ming Zhu, Univ. of Nevada, Las Vegas (United States)
Shengjie Zhai, Univ. of Nevada, Las Vegas (United States)
Hui Zhao, Univ. of Nevada, Las Vegas (United States)


Published in SPIE Proceedings Vol. 11289:
Photonic and Phononic Properties of Engineered Nanostructures X
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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