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양창덕

Yang, Changduk
Advanced Tech-Optoelectronic Materials Synthesis Lab.
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A Non-Conjugated Polymer Acceptor for Efficient and Thermally Stable All-Polymer Solar Cells

Author(s)
Fan, QunpingSu, WenyanChen, ShanshanLiu, TaoZhuang, WenliuMa, RuijieWen, XinYin, ZhihongLuo, ZhenghuiGuo, XiaHou, LintaoMoth-Poulsen, KasperLi, YuZhang, ZhiguoYang, ChangdukYu, DonghongYan, HeZhang, MaojieWang, Ergang
Issued Date
2020-11
DOI
10.1002/anie.202005662
URI
https://scholarworks.unist.ac.kr/handle/201301/48229
Fulltext
https://onlinelibrary.wiley.com/doi/full/10.1002/anie.202005662
Citation
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.59, no.45, pp.19835 - 19840
Abstract
A non-conjugated polymer acceptor PF1-TS4 was firstly synthesized by embedding a thioalkyl segment in the mainchain, which shows excellent photophysical properties on par with a fully conjugated polymer, with a low optical band gap of 1.58 eV and a high absorption coefficient >10(5) cm(-1), a high LUMO level of -3.89 eV, and suitable crystallinity. Matched with the polymer donor PM6, the PF1-TS4-based all-PSC achieved a power conversion efficiency (PCE) of 8.63 %, which is approximate to 45 % higher than that of a device based on the small molecule acceptor counterpart IDIC16. Moreover, the PF1-TS4-based all-PSC has good thermal stability with approximate to 70 % of its initial PCE retained after being stored at 85 degrees C for 180 h, while the IDIC16-based device only retained approximate to 50 % of its initial PCE when stored at 85 degrees C for only 18 h. Our work provides a new strategy to develop efficient polymer acceptor materials by linkage of conjugated units with non-conjugated thioalkyl segments.
Publisher
WILEY-V C H VERLAG GMBH
ISSN
1433-7851
Keyword (Author)
all-polymer solar cellsnon-conjugated polymer acceptorspower conversion efficiencythermal stabilitythioalkyl chain linkages
Keyword
POWER CONVERSION EFFICIENCYFULLERENE ACCEPTORSPERFORMANCESTABILITYDONOR

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