Citation

BibTex format

@article{Newman:2018:10.1080/14686996.2018.1433948,
author = {Newman, MJ and Speller, EM and Barbe, J and Luke, J and Li, M and Li, Z and Wang, Z-K and Jain, SM and Kim, J-S and Lee, HKH and Tsoi, WC},
doi = {10.1080/14686996.2018.1433948},
journal = {Science and Technology of Advanced Materials},
pages = {194--202},
title = {Photo-stability study of a solution-processed small molecule solar cell system: correlation between molecular conformation and degradation},
url = {http://dx.doi.org/10.1080/14686996.2018.1433948},
volume = {19},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Solution-processed organic small molecule solar cells (SMSCs) have achieved efficiency over 11%. However, very few studies have focused on their stability under illumination and the origin of the degradation during the so-called burn-in period. Here, we studied the burn-in period of a solution-processed SMSC using benzodithiophene terthiophene rhodamine:[6,6]-phenyl C71 butyric acid methyl ester (BTR:PC71BM) with increasing solvent vapour annealing time applied to the active layer, controlling the crystallisation of the BTR phase. We find that the burn-in behaviour is strongly correlated to the crystallinity of BTR. To look at the possible degradation mechanisms, we studied the fresh and photo-aged blend films with grazing incidence X-ray diffraction, UV–vis absorbance, Raman spectroscopy and photoluminescence (PL) spectroscopy. Although the crystallinity of BTR affects the performance drop during the burn-in period, the degradation is found not to originate from the crystallinity changes of the BTR phase, but correlates with changes in molecular conformation – rotation of the thiophene side chains, as resolved by Raman spectroscopy which could be correlated to slight photobleaching and changes in PL spectra.
AU - Newman,MJ
AU - Speller,EM
AU - Barbe,J
AU - Luke,J
AU - Li,M
AU - Li,Z
AU - Wang,Z-K
AU - Jain,SM
AU - Kim,J-S
AU - Lee,HKH
AU - Tsoi,WC
DO - 10.1080/14686996.2018.1433948
EP - 202
PY - 2018///
SN - 1468-6996
SP - 194
TI - Photo-stability study of a solution-processed small molecule solar cell system: correlation between molecular conformation and degradation
T2 - Science and Technology of Advanced Materials
UR - http://dx.doi.org/10.1080/14686996.2018.1433948
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000451060900001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/65036
VL - 19
ER -