Enhanced absorption in elliptical silicon nanowire arrays for solar energy harvesting

Rui Ren; Yong-Xin Guo; Ri-Hong Zhu

doi:10.1117/1.OE.53.2.027102

6 February 2014 Enhanced absorption in elliptical silicon nanowire arrays for solar energy harvesting

Rui Ren, Yong-Xin Guo, Ri-Hong Zhu

Author Affiliations +

Optical Engineering, Vol. 53, Issue 2, 027102 (February 2014). https://doi.org/10.1117/1.OE.53.2.027102

Abstract

A crystalline Si thin film solar cell with elliptical silicon nanowire (SiNW)-decorated surface is presented. The elliptical SiNW solar cell performs broadband light absorption in the low energy region while maintaining strong absorption in the high energy region. For the elliptical SiNW solar cells with 1-μm underlying Si substrate, J_sc can be improved to 24.2 mA/cm ² , which is 16% higher than that of the circular SiNW-decorated solar cells. After integration with an Ag reflector, the elliptical SiNW solar cells can achieve higher J_scof 26.3 mA/cm² , demonstrating a photocurrent enhancement of 12.6% as compared with circular SiNW control device.

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Rui Ren, Yong-Xin Guo, and Ri-Hong Zhu "Enhanced absorption in elliptical silicon nanowire arrays for solar energy harvesting," Optical Engineering 53(2), 027102 (6 February 2014). https://doi.org/10.1117/1.OE.53.2.027102

Published: 6 February 2014

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