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Title: Enhanced photoelectrical response of hydrogenated amorphous silicon single-nanowire solar cells by front-opening crescent design
Authors: Yang, Z
Cao, G
Shang, A
Lei, DY 
Zhang, C
Gao, P
Ye, J
Li, X
Keywords: Coupled optoelectronic simulation
Single-nanowire solar cells
Issue Date: 2016
Publisher: Springer
Source: Nanoscale research letters, 2016, v. 11, no. 1, 233 How to cite?
Journal: Nanoscale research letters 
Abstract: We report an approach for substantially enhancing the light-trapping and photoconversion efficiency of hydrogenated amorphous silicon (a-Si:H) single-nanowire solar cells (SNSCs) by engineering the cross section of the nanowire from circular into a front-opening crescent shape. The proposed SNSCs show a broadband and highly tunable optical absorption compared to the conventional circular counterparts under both transverse electric and transverse magnetic incidences, enabling an enhancement ratio of over 40 % in both the photocurrent density and the photoconversion efficiency in a-Si:H SNSCs with a diameter of 200 nm. We further show that the superior performance can be well maintained under a wide range of incident angle and is robust to the blunt crescent edges.
ISSN: 1931-7573 (print)
1556-276X (online)
DOI: 10.1186/s11671-016-1447-0
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