TY - JOUR
T1 - Wide Band-Gap 3,4-Difluorothiophene-Based Polymer with 7% Solar Cell Efficiency: an Alternative to P3HT
AU - Wolf, Jannic Sebastian
AU - Cruciani, Federico
AU - El Labban, Abdulrahman
AU - Beaujuge, Pierre
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2015/6/12
Y1 - 2015/6/12
N2 - We report on a wide band-gap polymer donor composed of benzo[1,2-b:4,5-b']dithiophene (BDT) and 3,4-difluorothiophene ([2F]T) units (Eopt ~2.1 eV), and show that the fluorinated analog PBDT[2F]T performs significantly better than its non-fluorinated counterpart PBDT[2H]T in BHJ solar cells with PC71BM. While control P3HT- and PBDT[2H]T-based devices yield PCEs of ca. 4% and 3% (Max.) respectively, PBDT[2F]T-based devices reach PCEs of ca. 7%, combining a large Voc of ca. 0.9 V and short-circuit current values (ca. 10.7 mA/cm2) comparable to those of the best P3HT-based control devices.
AB - We report on a wide band-gap polymer donor composed of benzo[1,2-b:4,5-b']dithiophene (BDT) and 3,4-difluorothiophene ([2F]T) units (Eopt ~2.1 eV), and show that the fluorinated analog PBDT[2F]T performs significantly better than its non-fluorinated counterpart PBDT[2H]T in BHJ solar cells with PC71BM. While control P3HT- and PBDT[2H]T-based devices yield PCEs of ca. 4% and 3% (Max.) respectively, PBDT[2F]T-based devices reach PCEs of ca. 7%, combining a large Voc of ca. 0.9 V and short-circuit current values (ca. 10.7 mA/cm2) comparable to those of the best P3HT-based control devices.
UR - http://hdl.handle.net/10754/556079
UR - http://pubs.acs.org/doi/abs/10.1021/acs.chemmater.5b01520
UR - http://www.scopus.com/inward/record.url?scp=84934911447&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.5b01520
DO - 10.1021/acs.chemmater.5b01520
M3 - Article
SN - 0897-4756
VL - 27
SP - 4184
EP - 4187
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 12
ER -