Open AccessPeriodic anti-ring back reflectors for hydrogenated amorphous silicon thin-film solar cells
Author(s) -
PoYuan Chen,
Hui Hsin Hsiao,
Chung-I Ho,
Chi Chih Ho,
WeiLi Lee,
HaoChin Chang,
SiChen Lee,
Jian-Zhang Chen,
I-Chun Cheng
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.0a1128
Subject(s) - materials science , amorphous silicon , optics , silicon , optoelectronics , surface plasmon polariton , plasmonic solar cell , substrate (aquarium) , solar cell , amorphous solid , polymer solar cell , thin film , plasmon , surface plasmon , crystalline silicon , nanotechnology , physics , oceanography , chemistry , organic chemistry , geology
Large and periodic anti-ring arrays are fabricated by using a monolayer of polymer/nanosphere hybrid technique and applied as back reflectors in substrate-type hydrogenated amorphous silicon (a-Si:H) thin-film solar cells. The structure of each anti-ring comprises a nanodome centered inside a nanohole. The excitation of Bloch wave surface plasmon polaritons is observed in the Ag-coated anti-ring arrays. The nanodomes of the anti-ring arrays turn out to enhance large-angle light scattering and increase the effective optical path in the solar cell. The resulting efficiency of an ultrathin a-Si:H (thickness: 150 nm) solar cell is enhanced by 39% compared to that with a flat back reflector and by 13% compared to that with a nanohole back reflector.