Towards high-efficiency multi-junction solar cells with biologically inspired nanosurfaces

Pei-Chen Yu; Meng Yih Chiu; Chia Hua Chang; Chung Yu Hong; Yu Lin Tsai; Hau Vei Han; Yu Rue Wu

doi:10.1002/pip.2259

Towards high-efficiency multi-junction solar cells with biologically inspired nanosurfaces

Pei-Chen Yu^*, Meng Yih Chiu, Chia Hua Chang, Chung Yu Hong, Yu Lin Tsai, Hau Vei Han, Yu Rue Wu

^*Corresponding author for this work

Department of Photonics

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Multi-junction solar cells offer extremely high power conversion efficiency with minimal semiconductor material usage, and hence are promising for large-scale electricity generation. However, suppressing optical reflection in the UV regime is particularly challenging due to the lack of adequate dielectric materials. In this work, bio-inspired antireflective structures are demonstrated on a monolithically grown Ga_0.5In_0.5P/In_0.01Ga_0.99As/Ge triple-junction solar cell, which overcome the limited optical response of reference devices. The fabricated device also exhibits omni-directional enhancement of photocurrent and power conversion efficiency, offering a viable solution to concentrated illumination with large angles of incidence. A comprehensive design scheme is further developed to tailor the reflectance spectrum for maximum photocurrent output of tandem cells.

Original language	English
Pages (from-to)	300-307
Number of pages	8
Journal	Progress in Photovoltaics: Research and Applications
Volume	22
Issue number	3
DOIs	https://doi.org/10.1002/pip.2259
State	Published - 1 Mar 2014

Keywords

biomimetic nanostructures
photovoltaic
solar cells
sub-wavelength structures

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abstract = "Multi-junction solar cells offer extremely high power conversion efficiency with minimal semiconductor material usage, and hence are promising for large-scale electricity generation. However, suppressing optical reflection in the UV regime is particularly challenging due to the lack of adequate dielectric materials. In this work, bio-inspired antireflective structures are demonstrated on a monolithically grown Ga0.5In0.5P/In0.01Ga0.99As/Ge triple-junction solar cell, which overcome the limited optical response of reference devices. The fabricated device also exhibits omni-directional enhancement of photocurrent and power conversion efficiency, offering a viable solution to concentrated illumination with large angles of incidence. A comprehensive design scheme is further developed to tailor the reflectance spectrum for maximum photocurrent output of tandem cells.",

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AU - Yu, Pei-Chen

AU - Chiu, Meng Yih

AU - Chang, Chia Hua

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AU - Tsai, Yu Lin

AU - Han, Hau Vei

AU - Wu, Yu Rue

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