TY - JOUR
T1 - Panchromatic Ternary Organic Solar Cells with Porphyrin Dimers and Absorption-Complementary Benzodithiophene-based Small Molecules
AU - Piradi, Venkatesh
AU - Xu, Xiaopeng
AU - Wang, Zaiyu
AU - Ali, Jazib
AU - Peng, Qiang
AU - Liu, Feng
AU - Zhu, Xunjin
N1 - Publisher Copyright:
© 2019 American Chemical Society.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/2/13
Y1 - 2019/2/13
N2 - Diketopyrrolopyrrole-ethynylene-bridged porphyrin dimers are capped with electron-deficient 3-ethylrhodanine (A 2 ) via a π-bridge of phenylene ethynylene, affording two new acceptor-donor-acceptor structural porphyrin dimers (DPP-2TTP and DPP-2TP) with strong absorption in ranges of 400-550 nm (Soret bands) and 700-900 nm (Q bands). Their intrinsic absorption deficiency between the Soret and Q bands could be perfectly compensated by a wide-bandgap small molecule DR3TBDTTF (D∗) with absorption at 500-700 nm. Impressively, the optimal ternary device based on the blend films of DPP-2TPP, DR3TBDTTF (20 wt %), and PC 71 BM shows a PCE of 11.15%, whereas the binary devices based on DPP-2TTP/PC 71 BM and DPP-2TP/PC 71 BM blend films exhibit PCEs of 9.30 and 8.23%, respectively. The high compatibility of the low bandgap porphyrin dimers with the wide-bandgap small molecule provides a new threesome with PC 71 BM for highly efficient panchromatic ternary organic solar cells.
AB - Diketopyrrolopyrrole-ethynylene-bridged porphyrin dimers are capped with electron-deficient 3-ethylrhodanine (A 2 ) via a π-bridge of phenylene ethynylene, affording two new acceptor-donor-acceptor structural porphyrin dimers (DPP-2TTP and DPP-2TP) with strong absorption in ranges of 400-550 nm (Soret bands) and 700-900 nm (Q bands). Their intrinsic absorption deficiency between the Soret and Q bands could be perfectly compensated by a wide-bandgap small molecule DR3TBDTTF (D∗) with absorption at 500-700 nm. Impressively, the optimal ternary device based on the blend films of DPP-2TPP, DR3TBDTTF (20 wt %), and PC 71 BM shows a PCE of 11.15%, whereas the binary devices based on DPP-2TTP/PC 71 BM and DPP-2TP/PC 71 BM blend films exhibit PCEs of 9.30 and 8.23%, respectively. The high compatibility of the low bandgap porphyrin dimers with the wide-bandgap small molecule provides a new threesome with PC 71 BM for highly efficient panchromatic ternary organic solar cells.
KW - absorption complementary
KW - diketopyrrolopyrrole
KW - panchromatic
KW - porphyrin dimers
KW - ternary organic solar cells
UR - http://www.scopus.com/inward/record.url?scp=85061286254&partnerID=8YFLogxK
U2 - 10.1021/acsami.8b19240
DO - 10.1021/acsami.8b19240
M3 - Journal article
C2 - 30656942
AN - SCOPUS:85061286254
SN - 1944-8244
VL - 11
SP - 6283
EP - 6291
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 6
ER -
