Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/109028
Title: | Thickness insensitive organic solar cells with high figure-of-merit-X enabled by simultaneous D/A interpenetration and stratification | Authors: | Xie, X Ma, R Luo, Y Dela Peña, TA Fong, PWK Luo, D Chandran, HT Jia, T Li, M Wu, J Kyaw, AKK Li, G |
Issue Date: | 2024 | Source: | Advanced energy materials, First published: 14 June 2024, Early View, 2401355, https://doi.org/10.1002/aenm.202401355 | Abstract: | Low cost and printing friendly fabrication of organic solar cells (OSCs) require thick-film devices with simply structured photoactive molecules. Thus, achieving high power conversion efficiency (PCE) for non-fused ring acceptor-based devices with high thickness is of great significance. Herein, by transforming traditional blend casting method to emerging sequential deposition (SD) method, D18:A4T-16 active blend exhibits large efficiency improvement from 8.02% to 14.75% in 300 nm thick devices. Systematic morphological and photophysical characterizations showcase the effectiveness of SD processing in achieving sufficient donor/acceptor interpenetration and vertical stratification, which eliminates the dilemma of charge generation/transport in blend casting films. Meanwhile, D18 bottom layer is proven helpful in realizing fast evaporation of postdeposited poor solvent, resulting in naturally thickened active layer with well-regulated crystallization. Furthermore, a new index to emphasize thick-film devices based on nonfused ring acceptors, called figure-of-merit-X (FoM-X), has been defined. The SD processed D18:A4T-16 devices herein, with 300 nm, 500 nm, and 800 nm thicknesses possess leading FoM-X values. | Keywords: | Nonfused ring acceptor Organic solar cells Power conversion efficiency Sequential deposition Thick film |
Publisher: | Wiley-VCH Verlag GmbH & Co. KGaA | Journal: | Advanced energy materials | ISSN: | 1614-6832 | EISSN: | 1614-6840 | DOI: | 10.1002/aenm.202401355 | Rights: | © 2024 The Author(s). Advanced Energy Materials published byWiley-VCH GmbH. This is an open access article under the terms of theCreative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distributionand reproduction in any medium, provided the original work is properlycited. The following publication X. Xie, R. Ma, Y. Luo, T. A. Dela Peña, P. W.-K. Fong, D. Luo, H. T. Chandran, T. Jia, M. Li, J. Wu, A. K. K. Kyaw, G. Li, Thickness Insensitive Organic Solar Cells with High Figure-of-Merit-X Enabled by Simultaneous D/A Interpenetration and Stratification. Adv. Energy Mater. 2024, 2401355 is available at https://doi.org/10.1002/aenm.202401355. |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Xie_Thickness_Insensitive_Organic.pdf | 2.83 MB | Adobe PDF | View/Open |
Page views
22
Citations as of Oct 13, 2024
Downloads
11
Citations as of Oct 13, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.