Tailoring the Molecular Planarity of Perylene Diimide-Based Third Component toward Efficient Ternary Organic Solar Cells.

Autor: Li Y; School of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, P. R. China., Ren J; School of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, P. R. China., Liu S; Xi'an Key Laboratory of Liquid Crystal and Organic Photovoltaic Materials State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute, Xi'an, 710065, P. R. China., Zhao B; Xi'an Key Laboratory of Liquid Crystal and Organic Photovoltaic Materials State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute, Xi'an, 710065, P. R. China., Liang Z; Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi, Key Lab of Photonic Technique for Information School of Electronics Science & Engineering Faculty of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China., Jee MH; Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea., Qin H; School of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, P. R. China., Su W; School of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, P. R. China., Woo HY; Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea., Gao C; Xi'an Key Laboratory of Liquid Crystal and Organic Photovoltaic Materials State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute, Xi'an, 710065, P. R. China.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 Aug; Vol. 20 (33), pp. e2401176. Date of Electronic Publication: 2024 Mar 26.
DOI: 10.1002/smll.202401176
Abstrakt: Incorporating a third component into binary organic solar cells (b-OSCs) has provided a potential platform to boost power conversion efficiency (PCEs). However, gaining control over the non-equilibrium blend morphology via the molecular design of the perylene diimide (PDI)-based third component toward efficient ternary organic solar cells (t-OSCs) still remains challenging. Herein, two novel PDI derivatives are developed with tailored molecular planarity, namely ufBTz-2PDI and fBTz-2PDI, as the third component for t-OSCs. Notably, after performing a cyclization reaction, the twisted ufBTz-2PDI with an amorphous character transferred to the highly planar fBTz-2PDI followed by a semi-crystalline character. When incorporating the semi-crystalline fBTz-2PDI into the D18:L8-BO system, the resultant t-OSC achieved an impressive PCE of 18.56%, surpassing the 17.88% attained in b-OSCs. In comparison, the addition of amorphous ufBTz-2PDI into the binary system facilitates additional charge trap sites and results in a deteriorative PCE of 14.37%. Additionally, The third component fBTz-2PDI possesses a good generality in optimizing the PCEs of several b-OSCs systems are demonstrated. The results not only provided a novel A-DA'D-A motif for further designing efficient third component but also demonstrated the crucial role of modulated crystallinity of the PDI-based third component in optimizing PCEs of t-OSCs.
(© 2024 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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