TY - JOUR
T1 - Hexanary blends
T2 - a strategy towards thermally stable organic photovoltaics
AU - Paleti, Sri Harish Kumar
AU - Hultmark, Sandra
AU - Han, Jianhua
AU - Wen, Yuanfan
AU - Xu, Han
AU - Chen, Si
AU - Järsvall, Emmy
AU - Jalan, Ishita
AU - Villalva, Diego Rosas
AU - Sharma, Anirudh
AU - Khan, Jafar I.
AU - Moons, Ellen
AU - Li, Ruipeng
AU - Yu, Liyang
AU - Gorenflot, Julien
AU - Laquai, Frédéric
AU - Müller, Christian
AU - Baran, Derya
N1 - Funding Information:
This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No: OSR-CARF/CCF-3079 and OSR-CRG2018-3746. S.H., E.J., C.M., I.J. and E.M. gratefully acknowledge financial support from the Knut and Alice Wallenberg Foundation through the project “Mastering Morphology for Solution-borne Electronics” (grant number 2016.0059). S.H. and C.M. acknowledge support from the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under grant agreement no. OSR-2019-CPF-4106. The authors thank the National Synchrotron Light Source II (NSLS-II, Contract No. DE-SC0012704), Brookhaven National Laboratory for providing GIWAXS experiment time. S.H.K.P. acknowledges the timely help of L. Lanzetta with hyperspectral PL imaging studies.
Funding Information:
This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No: OSR-CARF/CCF-3079 and OSR-CRG2018-3746. S.H., E.J., C.M., I.J. and E.M. gratefully acknowledge financial support from the Knut and Alice Wallenberg Foundation through the project “Mastering Morphology for Solution-borne Electronics” (grant number 2016.0059). S.H. and C.M. acknowledge support from the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under grant agreement no. OSR-2019-CPF-4106. The authors thank the National Synchrotron Light Source II (NSLS-II, Contract No. DE-SC0012704), Brookhaven National Laboratory for providing GIWAXS experiment time. S.H.K.P. acknowledges the timely help of L. Lanzetta with hyperspectral PL imaging studies.
Publisher Copyright:
© 2023, The Author(s).
PY - 2023/12
Y1 - 2023/12
N2 - Non-fullerene based organic solar cells display a high initial power conversion efficiency but continue to suffer from poor thermal stability, especially in case of devices with thick active layers. Mixing of five structurally similar acceptors with similar electron affinities, and blending with a donor polymer is explored, yielding devices with a power conversion efficiency of up to 17.6%. The hexanary device performance is unaffected by thermal annealing of the bulk-heterojunction active layer for at least 23 days at 130 °C in the dark and an inert atmosphere. Moreover, hexanary blends offer a high degree of thermal stability for an active layer thickness of up to 390 nm, which is advantageous for high-throughput processing of organic solar cells. Here, a generic strategy based on multi-component acceptor mixtures is presented that permits to considerably improve the thermal stability of non-fullerene based devices and thus paves the way for large-area organic solar cells.
AB - Non-fullerene based organic solar cells display a high initial power conversion efficiency but continue to suffer from poor thermal stability, especially in case of devices with thick active layers. Mixing of five structurally similar acceptors with similar electron affinities, and blending with a donor polymer is explored, yielding devices with a power conversion efficiency of up to 17.6%. The hexanary device performance is unaffected by thermal annealing of the bulk-heterojunction active layer for at least 23 days at 130 °C in the dark and an inert atmosphere. Moreover, hexanary blends offer a high degree of thermal stability for an active layer thickness of up to 390 nm, which is advantageous for high-throughput processing of organic solar cells. Here, a generic strategy based on multi-component acceptor mixtures is presented that permits to considerably improve the thermal stability of non-fullerene based devices and thus paves the way for large-area organic solar cells.
UR - http://www.scopus.com/inward/record.url?scp=85166099131&partnerID=8YFLogxK
U2 - 10.1038/s41467-023-39830-6
DO - 10.1038/s41467-023-39830-6
M3 - Article
C2 - 37528112
AN - SCOPUS:85166099131
SN - 2041-1723
VL - 14
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 4608
ER -