Issue 23, 2012
From the journal:

Nanoscale

Hierarchical structures consisting of SiO2nanorods and p-GaN microdomes for efficiently harvesting solar energy for InGaN quantum well photovoltaic cells

Cheng-Han Ho,a   Der-Hsien Lien,a   Hung-Chih Chang,a   Chin-An Lin,a   Chen-Fang Kang,a   Meng-Kai Hsing,b   Kun-Yu Laic  and  Jr-Hau He*ad  

* Corresponding authors

a Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan, ROC
E-mail: jhhe@ntu.edu.tw
Fax: +886-2-2367-7467
Tel: +886-2-33669646

b Ubilux Optoelectronics Corporation, Tainan 74149, Taiwan, ROC

c Department of Optics and Photonics, National Central University, Chung-Li 320, Taiwan, ROC

d Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, ROC

Abstract

We experimentally and theoretically demonstrated the hierarchical structure of SiO2 nanorod arrays/p-GaN microdomes as a light harvesting scheme for InGaN-based multiple quantum well solar cells. The combination of nano- and micro-structures leads to increased internal multiple reflection and provides an intermediate refractive index between air and GaN. Cells with the hierarchical structure exhibit improved short-circuit current densities and fill factors, rendering a 1.47 fold efficiency enhancement as compared to planar cells.

Graphical abstract: Hierarchical structures consisting of SiO2 nanorods and p-GaN microdomes for efficiently harvesting solar energy for InGaN quantum well photovoltaic cells

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Article information

DOI
https://doi.org/10.1039/C2NR32746E
Article type
Communication
Submitted
14 Sep 2012
Accepted
03 Oct 2012
First published
09 Oct 2012

Nanoscale, 2012,4, 7346-7349

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Hierarchical structures consisting of SiO2 nanorods and p-GaN microdomes for efficiently harvesting solar energy for InGaN quantum well photovoltaic cells

C. Ho, D. Lien, H. Chang, C. Lin, C. Kang, M. Hsing, K. Lai and J. He, Nanoscale, 2012, 4, 7346 DOI: 10.1039/C2NR32746E

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