Premium
High‐Efficiency Inverted Polymer Photovoltaics via Spectrally Tuned Absorption Enhancement
Author(s) -
Loser Stephen,
Valle Brent,
Luck Kyle A.,
Song Charles K.,
Ogien Gabriel,
Hersam Mark C.,
Singer Kenneth D.,
Marks Tobin J.
Publication year - 2014
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201301938
Subject(s) - organic solar cell , materials science , photovoltaics , absorption (acoustics) , thiophene , layer (electronics) , active layer , optoelectronics , polymer , nanotechnology , photovoltaic system , organic chemistry , chemistry , composite material , electrical engineering , thin film transistor , engineering
The trade‐off between light absorption and exciton diffusion length must be addressed before widespread deployment of organic photovoltaics can be realized. Optical transfer matrix modeling is used in inverted, high‐efficiency organic photovoltaics, employing a poly[[4,8‐bis[(2‐ethylhexyl)oxy]benzo[1,2‐b:4,5‐b′]dithiophene‐2,6‐diyl] [3‐fluoro‐2‐[(2‐ethylhexyl)carbonyl] thieno[3,4‐b]thiophenediyl]] (PTB7):[6,6]‐phenyl C 71 butyric acid methyl‐ester (PC 71 BM) active layer to spectrally sculpt absorption enhancement by tuning the layer thicknesses of both the photoactive layer and the ZnO interfacial layer (IFL).