Enhanced Photoelectrical Response of Hydrogenated Amorphous Silicon Single-Nanowire Solar Cells by Front-Opening Crescent Design

Zhenhai Yang; Guoyang Cao; Aixue Shang; Dangyuan Lei; Cheng Zhang; Pingqi Gao; Jichun Ye; Xiaofeng Li

doi:10.1186/s11671-016-1447-0

Enhanced Photoelectrical Response of Hydrogenated Amorphous Silicon Single-Nanowire Solar Cells by Front-Opening Crescent Design

Zhenhai Yang, Guoyang Cao, Aixue Shang, Dangyuan Lei, Cheng Zhang, Pingqi Gao, Jichun Ye, Xiaofeng Li

Research output: Journal article publication › Journal article › Academic research › peer-review

10 Citations (Scopus)

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.

Original language	English
Article number	233
Journal	Nanoscale Research Letters
Volume	11
Issue number	1
DOIs	https://doi.org/10.1186/s11671-016-1447-0
Publication status	Published - 1 Dec 2016

Keywords

Coupled optoelectronic simulation
Crescent
Light-trapping
Single-nanowire solar cells

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

More information

10.1186/s11671-016-1447-0

http://hdl.handle.net/10397/61351

Cite this

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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.",

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AU - Yang, Zhenhai

AU - Cao, Guoyang

AU - Shang, Aixue

AU - Lei, Dangyuan

AU - Zhang, Cheng

AU - Gao, Pingqi

AU - Ye, Jichun

AU - Li, Xiaofeng

PY - 2016/12/1

Y1 - 2016/12/1

N2 - 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.

AB - 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.

KW - Coupled optoelectronic simulation

KW - Crescent

KW - Light-trapping

KW - Single-nanowire solar cells

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DO - 10.1186/s11671-016-1447-0

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JF - Nanoscale Research Letters

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Enhanced Photoelectrical Response of Hydrogenated Amorphous Silicon Single-Nanowire Solar Cells by Front-Opening Crescent Design

Abstract

Keywords

ASJC Scopus subject areas

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