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Cu(In,Ga)Se 2 solar cell grown on flexible polymer substrate with efficiency exceeding 17%
Author(s) -
Chirilă A.,
Bloesch P.,
Seyrling S.,
Uhl A.,
Buecheler S.,
Pianezzi F.,
Fella C.,
Perrenoud J.,
Kranz L.,
Verma R.,
Guettler D.,
Nishiwaki S.,
Romanyuk Y.E.,
Bilger G.,
Brémaud D.,
Tiwari A.N.
Publication year - 2011
Publication title -
progress in photovoltaics: research and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.286
H-Index - 131
eISSN - 1099-159X
pISSN - 1062-7995
DOI - 10.1002/pip.1077
Subject(s) - solar cell , polyimide , energy conversion efficiency , materials science , thin film solar cell , substrate (aquarium) , optoelectronics , layer (electronics) , thin film , european commission , solar cell efficiency , engineering physics , composite material , nanotechnology , european union , engineering , geology , oceanography , business , economic policy
Development of a Cu(In,Ga)Se 2 thin film solar cell on a polyimide film with a conversion efficiency of 17.1%, measured under standard test conditions at the European Solar Test Installation (ESTI) of the Joint Research Centre (JRC) of the European Commission, Ispra, is reported. The drastic improvement from the previous record of 14.1% efficiency is attributed to a more optimized compositional grading, better structural and electronic properties of the absorber layer as well as reduced reflection losses. Basic film and device properties, which led to the improvement in the efficiency record of flexible solar cells are presented for the new process and compared to the old process. Copyright © 2011 John Wiley & Sons, Ltd.