TY - JOUR
T1 - Effects of idling time between depositions of organic layers and metal electrode in organic photovoltaic device
AU - Chandran, Hrisheekesh Thachoth
AU - Qing, Jian
AU - Zhang, Hongyou
AU - Chan, Chui-Yee
AU - Ng, Tsz-Wai
AU - Lo, Ming-Fai
AU - Lee, Chun-Sing
PY - 2015/7/18
Y1 - 2015/7/18
N2 - Abstract Deposition of metal cathode in organic photovoltaic (OPV) devices is known to cause serious metal atom penetration into the active layers and as a remedy, exciton blocking layer (EBL) is implemented. It is found that the metal penetration through EBL can be controlled by optimizing the idling time between the depositions of EBL and cathode layers. Both electrical and optical data show that the resistance of BPhen layer (EBL) to metal (Mg:Ag) penetration increase with increasing idling time. Also, significant variation in power conversion efficiency (PCE) is observed in subphthalocyanine chloride (SubPc)/fullerene (C60) based organic photovoltaic (OPV) cells by simply adding idling time as an additional control parameter. Device with optimized BPhen thickness and idling time resulted in a PCE of 2.8% whereas that of no idling time consideration has PCE limited at 2.3%. These observations are attributed to slow processes of self-organization in BPhen after their depositions.
AB - Abstract Deposition of metal cathode in organic photovoltaic (OPV) devices is known to cause serious metal atom penetration into the active layers and as a remedy, exciton blocking layer (EBL) is implemented. It is found that the metal penetration through EBL can be controlled by optimizing the idling time between the depositions of EBL and cathode layers. Both electrical and optical data show that the resistance of BPhen layer (EBL) to metal (Mg:Ag) penetration increase with increasing idling time. Also, significant variation in power conversion efficiency (PCE) is observed in subphthalocyanine chloride (SubPc)/fullerene (C60) based organic photovoltaic (OPV) cells by simply adding idling time as an additional control parameter. Device with optimized BPhen thickness and idling time resulted in a PCE of 2.8% whereas that of no idling time consideration has PCE limited at 2.3%. These observations are attributed to slow processes of self-organization in BPhen after their depositions.
KW - Exciton blocking layer
KW - Photovoltaic device
KW - Self-organization
UR - http://www.scopus.com/inward/record.url?scp=84937110970&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84937110970&origin=recordpage
U2 - 10.1016/j.orgel.2015.07.030
DO - 10.1016/j.orgel.2015.07.030
M3 - RGC 21 - Publication in refereed journal
SN - 1566-1199
VL - 26
SP - 99
EP - 103
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
M1 - 3192
ER -
