Non-fused medium bandgap electron acceptors for efficient organic photovoltaics

Funding Agencies|National Natural Science Foun-dation of China [22125901, 21722404]; Research Grants Council (RGC) of Hong Kong [14303519]; Joint Laboratory Funding Scheme Project [JLFS/P-102/18]; NSFC/RGC Joint Research Scheme Grant [N_CUHK418/17]; CUHK direct grant [4442384]
The cost-effective organic semiconductors are strongly needed in organic photovoltaics (OPVs). Herein, two medium bandgap (MBG) electron acceptors, TPT4F and TPT4Cl are developed via the new design of multi-noncovalent interaction assisted unfused core, flanked with two electron withdrawing end groups. These fullly non-fused MBG acceptors adapt the planar and rigid conformation in solid, therefore exhibiting the ordered face-on stacking and strong photoluminescence in films. As results, TPT4Cl-based OPVs, upon blending with the PBDB-TF polymer donor, have achieved a power conversion efficiency of 10.16% with a low non-radiative loss of 0.27 eV, representing one of the best fullly non-fused medium bandgap acceptors with desirable cost-efficiency balance. (c) 2022 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.

NATURVETENSKAP Fysik Annan fysik hsv//swe
NATURAL SCIENCES Physical Sciences Other Physics Topics hsv//eng
Organic photovoltaic; Medium bandgap; Electron withdrawing unit; Non-covalent interaction

Xiang, JialeZhejiang Univ, Peoples R China (författare)
Jain, NakulLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)nakja32 (författare)
Liu, Zhi-XiZhejiang Univ, Peoples R China (författare)
Chen, ZengZhejiang Univ, Peoples R China (författare)
Xia, XinxinChinese Univ Hong Kong, Peoples R China (författare)
Lu, XinhuiChinese Univ Hong Kong, Peoples R China (författare)
Zhu, HaimingZhejiang Univ, Peoples R China (författare)
Gao, FengLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)fenga88 (författare)
Li, Chang-ZhiZhejiang Univ, Peoples R China (författare)
Zhejiang Univ, Peoples R ChinaElektroniska och fotoniska material (creator_code:org_t)

Ingår i:Journal of Energy Challenges and Mechanics: ELSEVIER70, s. 576-5822056-9386
Ingår i:Journal of Energy Chemistry: ELSEVIER70, s. 576-5822095-4956

Av författaren/redakt...: Wen, Tian-Jiao; Xiang, Jiale; Jain, Nakul; Liu, Zhi-Xi; Chen, Zeng; Xia, Xinxin; visa fler...; Lu, Xinhui; Zhu, Haiming; Gao, Feng; Li, Chang-Zhi; visa färre...

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