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Proceedings Paper

Highly efficient silicon solar cells designed with photon trapping micro/nano structures
Author(s): Cesar Bartolo-Perez; Yang Gao; Hilal Cansizoglu; Soroush Ghandiparsi; Ahmet Kaya; Ahmed Mayet; Ekaterina Ponizovskaya Devine; Toshishige Yamada; Aly Elrefaie; Shih-Yuan Wang; M. Saif Islam
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Paper Abstract

Crystalline silicon (c-Si) remains the most commonly used material for photovoltaic (PV) cells in the current commercial solar cells market. However, current technology requires “thick” silicon due to the relative weak absorption of Si in the solar spectrum. We demonstrate several CMOS compatible fabrication techniques including dry etch, wet etch and their combination to create different photon trapping micro/nanostructures on very thin c-silicon surface for light harvesting of PVs. Both, the simulation and experimental results show that these photon trapping structures are responsible for the enhancement of the visible light absorption which leads to improved efficiency of the PVs. Different designs of micro/nanostructures via different fabrication techniques are correlated with the efficiencies of the PVs. Our method can also drastically reduce the thickness of the c-Si PVs, and has great potential to reduce the cost, and lead to highly efficient and flexible PVs.

Paper Details

Date Published: 25 August 2017
PDF: 6 pages
Proc. SPIE 10349, Low-Dimensional Materials and Devices 2017, 103491D (25 August 2017); doi: 10.1117/12.2276633
Show Author Affiliations
Cesar Bartolo-Perez, Univ. of California, Davis (United States)
Yang Gao, Univ. of California, Davis (United States)
Hilal Cansizoglu, Univ. of California, Davis (United States)
Soroush Ghandiparsi, Univ. of California, Davis (United States)
Ahmet Kaya, Univ. of California, Davis (United States)
Ahmed Mayet, Univ. of California, Davis (United States)
Ekaterina Ponizovskaya Devine, W&WSens Devices, Inc. (United States)
Toshishige Yamada, Univ. of California, Santa Cruz (United States)
W&WSens Devices, Inc. (United States)
Aly Elrefaie, Univ. of California, Davis (United States)
W&WSens Devices, Inc. (United States)
Shih-Yuan Wang, W&WSens Devices, Inc. (United States)
M. Saif Islam, Univ. of California, Davis (United States)


Published in SPIE Proceedings Vol. 10349:
Low-Dimensional Materials and Devices 2017
Nobuhiko P. Kobayashi; A. Alec Talin; M. Saif Islam; Albert V. Davydov, Editor(s)

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