TY - JOUR
T1 - One-Step Synthesis of New Electron Acceptor for High Efficiency Solution Processable Organic Solar Cells
AU - Nagarjuna, P.
AU - Bagui, Anirban
AU - Garg, Ashish
AU - Gupta, Vinay
AU - Singh, Surya Prakash
N1 - Funding Information:
P.N. thanks the CSIR, Government of India for providing SRF. A.B. would like to thank Department of Science & Technology (DST), Government of India for his INSPIRE Faculty fellowship (DST/INSPIRE/04/2017/000087). We also gratefully acknowledge DST-UK (APEX-Phase-II) for their support.
Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/12/7
Y1 - 2017/12/7
N2 - Here, we demonstrate a new fulleropyrrolidine electron acceptor coded as DIF-ful-C60, following a one-step synthetic protocol. The absorption spectrum of DIF-ful-C60 suggests broader absorption over PC61BM while the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels of the molecule are -5.32 and -3.60 eV, respectively. The solution processed bulk-heterojunction polymer solar cells fabricated using a blend of DIF-ful-C60 with PTB7 and PTB7-Th as electron donors show power conversion efficiencies (PCEs) of 6.8 and 8.6%, respectively, which is highest reported so far for fulleropyrrolidine type electron acceptors. In comparison, the control devices made from PTB7:PC61BM and PTB7-Th:PC61BM blends showed PCEs of 6.2 and 7.9%, respectively. The increase in efficiency of the devices based on DIF-ful-C60 is due to increase in the short circuit current as well as open circuit voltage of ca. 0.8 V.
AB - Here, we demonstrate a new fulleropyrrolidine electron acceptor coded as DIF-ful-C60, following a one-step synthetic protocol. The absorption spectrum of DIF-ful-C60 suggests broader absorption over PC61BM while the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels of the molecule are -5.32 and -3.60 eV, respectively. The solution processed bulk-heterojunction polymer solar cells fabricated using a blend of DIF-ful-C60 with PTB7 and PTB7-Th as electron donors show power conversion efficiencies (PCEs) of 6.8 and 8.6%, respectively, which is highest reported so far for fulleropyrrolidine type electron acceptors. In comparison, the control devices made from PTB7:PC61BM and PTB7-Th:PC61BM blends showed PCEs of 6.2 and 7.9%, respectively. The increase in efficiency of the devices based on DIF-ful-C60 is due to increase in the short circuit current as well as open circuit voltage of ca. 0.8 V.
UR - http://www.scopus.com/inward/record.url?scp=85038084981&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.7b08167
DO - 10.1021/acs.jpcc.7b08167
M3 - Article
AN - SCOPUS:85038084981
SN - 1932-7447
VL - 121
SP - 26615
EP - 26621
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 48
ER -