Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/36206
Title: | Increasing donor-acceptor spacing for reduced voltage loss in organic solar cells | Authors: | Wang, Jing Jiang, Xudong Wu, Hongbo Feng, Guitao Wu, Hanyu Li, Junyu Yi, Yuanping Feng, Xunda Ma, Zaifei Li, Weiwei VANDEWAL, Koen Tang, Zheng |
Issue Date: | 2021 | Publisher: | NATURE PORTFOLIO | Source: | NATURE COMMUNICATIONS, 12 (1) (Art N° 6679) | Abstract: | The high voltage losses (V-loss), originating from inevitable electron-phonon coupling in organic materials, limit the power conversion efficiency of organic solar cells to lower values than that of inorganic or perovskite solar cells. In this work, we demonstrate that this V-loss can in fact be suppressed by controlling the spacing between the donor (D) and the acceptor (A) materials (DA spacing). We show that in typical organic solar cells, the DA spacing is generally too small, being the origin of the too-fast non-radiative decay of charge carriers (k(nr)), and it can be increased by engineering the non-conjugated groups, i.e., alkyl chain spacers in single component DA systems and side chains in high-efficiency bulk-hetero-junction systems. Increasing DA spacing allows us to realize significantly reduced k(nr) and improved device voltage. This points out a new research direction for breaking the performance bottleneck of organic solar cells. | Notes: | Tang, Z (corresponding author), Donghua Univ, Coll Mat Sci & Engn, Ctr Adv Low Dimens Mat, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.; Li, WW (corresponding author), Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China.; Li, WW (corresponding author), Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China.; Li, WW (corresponding author), Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China.; Vandewal, K (corresponding author), Hasselt Univ, Inst Mat Onderzoek IMO IMOMEC, Wetenschapspk 1, BE-3590 Diepenbeek, Belgium. liweiwei@iccas.ac.cn; koen.vandewal@uhasselt.be; ztang@dhu.edu.cn |
Document URI: | http://hdl.handle.net/1942/36206 | e-ISSN: | 2041-1723 | DOI: | 10.1038/s41467-021-26995-1 | ISI #: | WOS:000720682300067 | Rights: | The Author(s) 2021. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2022 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
s41467-021-26995-1.pdf | Published version | 2.32 MB | Adobe PDF | View/Open |
WEB OF SCIENCETM
Citations
70
checked on Oct 3, 2024
Page view(s)
36
checked on Sep 7, 2022
Download(s)
18
checked on Sep 7, 2022
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.