Programmable quasi-random nanostructured coating with omnidirectional broadband improvement for photon management (Conference Presentation)

Yihong Zhao; Ming Zhu; Shengjie Zhai; Hui Zhao

doi:10.1117/12.2546793

10 March 2020 Programmable quasi-random nanostructured coating with omnidirectional broadband improvement for photon management (Conference Presentation)

Yihong Zhao, Ming Zhu, Shengjie Zhai, Hui Zhao

Author Affiliations +

Proceedings Volume 11289, Photonic and Phononic Properties of Engineered Nanostructures X; 112891U (2020) https://doi.org/10.1117/12.2546793
Event: SPIE OPTO, 2020, San Francisco, California, United States

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).

Conference Presentation

Citation Download Citation

Yihong Zhao, Ming Zhu, Shengjie Zhai, and Hui Zhao "Programmable quasi-random nanostructured coating with omnidirectional broadband improvement for photon management (Conference Presentation)", Proc. SPIE 11289, Photonic and Phononic Properties of Engineered Nanostructures X, 112891U (10 March 2020); https://doi.org/10.1117/12.2546793

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KEYWORDS

Binary data

Coating

Nanostructuring

Optical discs

Algorithms

Lithography

Nanolithography

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