TY - JOUR
T1 - A strategy of designing near-infrared porphyrin-based non-fullerene acceptors for panchromatic organic solar cells
AU - Wang, Wei Chih
AU - Lin, You Wei
AU - Peng, Shih Hao
AU - Chuang, Chih Ting
AU - Chang, Chia-Chih
AU - Hsu, Chain-Shu
PY - 2020/11
Y1 - 2020/11
N2 - Two porphyrin-based non-fullerene acceptors (NFAs), PORTIC and PORTFIC, were synthesized to enable panchromatic absorption for high performance organic solar cells (OSCs). An inverted organic solar cell architecture of ITO/ZnO/PTB7-Th:Porphyrin-based NFAs/MoO3/Ag is used. With pyridine as an additive of which further affords optimum morphology for charge separation transport, the power conversion efficiency (PCE) was improved by 40.4% and 67.8% for PORTIC and PORTFIC, respectively, relative to devices fabricated without pyridine. Two-dimensional (2D) grazing-incidence wide-angle X-ray scattering (GIWAXS) shows that the optimized active layer exhibits face-on orientation. Moreover, the photoluminescence quenching experiments reveal that more effective charge transfer between the donor and acceptor is achieved upon addition of pyridine. PTB7-Th:PORTFIC device affords a VOC of 0.74 V, a JSC of 11.27 mA cm−2, a FF of 51.29% and highest PCE of 4.28%.
AB - Two porphyrin-based non-fullerene acceptors (NFAs), PORTIC and PORTFIC, were synthesized to enable panchromatic absorption for high performance organic solar cells (OSCs). An inverted organic solar cell architecture of ITO/ZnO/PTB7-Th:Porphyrin-based NFAs/MoO3/Ag is used. With pyridine as an additive of which further affords optimum morphology for charge separation transport, the power conversion efficiency (PCE) was improved by 40.4% and 67.8% for PORTIC and PORTFIC, respectively, relative to devices fabricated without pyridine. Two-dimensional (2D) grazing-incidence wide-angle X-ray scattering (GIWAXS) shows that the optimized active layer exhibits face-on orientation. Moreover, the photoluminescence quenching experiments reveal that more effective charge transfer between the donor and acceptor is achieved upon addition of pyridine. PTB7-Th:PORTFIC device affords a VOC of 0.74 V, a JSC of 11.27 mA cm−2, a FF of 51.29% and highest PCE of 4.28%.
KW - Non-fullerene acceptors
KW - Organic solar cells
KW - Panchromatic absorption and binary bulk heterojunctions
KW - Porphyrins
UR - http://www.scopus.com/inward/record.url?scp=85089489066&partnerID=8YFLogxK
U2 - 10.1016/j.orgel.2020.105899
DO - 10.1016/j.orgel.2020.105899
M3 - Article
AN - SCOPUS:85089489066
VL - 86
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
SN - 1566-1199
M1 - 105899
ER -