Dimer Acceptor Adopting a Flexible Linker for Efficient and Durable Organic Solar Cells

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Author(s)

  • Yanxun Li (Co-first Author)
  • Rui Zhang
  • Francis R. Lin
  • Kaikai Liu
  • Qunping Fan

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article numbere202303066
Journal / PublicationAngewandte Chemie - International Edition
Volume62
Issue number21
Online published22 Mar 2023
Publication statusPublished - 15 May 2023

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Publisher's Copyright Statement
  • COPYRIGHT TERMS OF DEPOSITED POSTPRINT FILE: This is the peer reviewed version of the following article: Qi, F., Li, Y., Zhang, R., Lin, F. R., Liu, K., Fan, Q., & Jen, A. K-Y. (2023). Dimer Acceptor Adopting a Flexible Linker for Efficient and Durable Organic Solar Cells. Angewandte Chemie - International Edition, 62(21), [e202303066], which has been published in final form at https://doi.org/10.1002/anie.202303066. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-85152796641&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(6559fdce-8610-4fa4-ac46-04bf03d63b74).html

Abstract

Organic solar cells (OSCs) have advanced rapidly due to the development of new photovoltaic materials. However, the long-term stability of OSCs still poses a severe challenge for their commercial deployment. To address this issue, a dimer acceptor (dT9TBO) with flexible linker is developed for incorporation into small-molecule acceptors to form molecular alloy with enhanced intermolecular packing and suppressed molecular diffusion to stabilize active layer morphology. Consequently, the PM6 : Y6 : dT9TBO-based device displays an improved power conversion efficiency (PCE) of 18.41 % with excellent thermal stability and negligible decay after being aged at 65 °C for 1800 h. Moreover, the PM6 : Y6 : dT9TBO-based flexible OSC also exhibits excellent mechanical durability, maintaining 95 % of its initial PCE after being bended repetitively for 1500 cycles. This work provides a simple and effective way to fine-tune the molecular packing with stabilized morphology to overcome the trade-off between OSC efficiency and stability. © 2023 Wiley-VCH GmbH.

Research Area(s)

  • Dimer Acceptor, Flexible Linker, Mechanical Performance, Solar Cells, Stability

Fingerprint

Publication fingerprints text

100
Organic Solar Cells Material Science
100
Durables Engineering
100
Dimer Chemical Engineering
40
Power Conversion Ef... Engineering
20
Thermal Stability Material Science
20
Display Device Material Science
20
Photovoltaics Material Science
20
Term Stability Engineering
20
Active Layer Engineering
20
Initial Power Engineering
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Citation Format(s)

[ RIS ] [ BibTeX ]
Dimer Acceptor Adopting a Flexible Linker for Efficient and Durable Organic Solar Cells. / Qi, Feng (Co-first Author); Li, Yanxun (Co-first Author); Zhang, Rui et al.
In: Angewandte Chemie - International Edition, Vol. 62, No. 21, e202303066, 15.05.2023.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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