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High efficiency arrays of polymer solar cells fabricated by spray‐coating in air
Author(s) -
Zhang Yiwei,
Griffin Jonathan,
Scarratt Nicholas W.,
Wang Tao,
Lidzey David G.
Publication year - 2016
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.2665
Subject(s) - pedot:pss , materials science , active layer , layer (electronics) , optoelectronics , substrate (aquarium) , homogeneity (statistics) , energy conversion efficiency , coating , spin coating , composite material , thin film transistor , oceanography , statistics , mathematics , geology
We present bulk heterojunction organic solar cells fabricated by spray‐casting both the PEDOT:PSS hole‐transport layer (HTL) and active PBDTTT‐EFT:PC 71 BM layers in air. Devices were fabricated in a (6 × 6) array across a large‐area substrate (25 cm 2 ) with each pixel having an active area of 6.45 mm 2 . We show that the film uniformity and operational homogeneity of the devices are excellent. The champion device with spray cast active layer on spin cast PEDOT:PSS had an power conversion efficiency (PCE) of 8.75%, and the best device with spray cast active layer and PEDOT:PSS had a PCE of 8.06%. The impacts of air and light exposure of the active layer on device performance are investigated and found to be detrimental. Copyright © 2015 John Wiley & Sons, Ltd.
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