Open AccessA new approach to fabricating silicon nanowire/poly(3, 4-ethylenedioxythiophene) hybrid heterojunction solar cells
Author(s) -
李小娟,
韦尚江,
吕文辉,
吴丹,
李亚军,
周文政
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.108801
Subject(s) - materials science , pedot:pss , poly(3,4 ethylenedioxythiophene) , optoelectronics , energy conversion efficiency , heterojunction , nanowire , hybrid solar cell , etching (microfabrication) , solar cell , quantum efficiency , nanotechnology , polymer solar cell , silicon , polymerization , chemical engineering , polymer , composite material , layer (electronics) , engineering
The silicon/poly(3, 4-ethylenedioxythiophene) core/shell organic/inorganic nanowire array (SiNWs/PEDOT) hybrid heterojunction solar cells are successfully fabricated by silver-assisted chemical etching method and vapor phase polymerization processes. The SiNWs/PEDOT hybrid solar cell shows that the performance is improved greatly and an excellent power conversion efficiency of 3.23% is achieved, which is as seven times as large as that of the planar cell without the nanowire structure. In addition, the studies of the reflectance, the I-V curve and the external quantum efficiency show that the great enhancement of performance for the SiNWs/PEDOT cell is due to the fact that the Si/PEDOT core/shell nanowire structure is successfully fabricated by vapor phase polymerization method, resulting in a high light trapping effect, a large junction area and an enhancement of the carrier collection efficiency.