Hole-selective-molecule doping improves the layer thickness tolerance of PEDOT:PSS for efficient organic solar cells
When used in organic solar cells, poly (3,4-ethylenedioxythiophene)-poly (styrenesulfonate) (PEDOT:PSS) aligns interfacial energy levels, promotes hole extraction, blocks electrons, and optimizes the active layer’s morphology. However, with an optimal thickness of approximately 30–40 nm, PEDOT:PSS...
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KeAi Communications Co. Ltd.
2025-01-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667141724000983 |
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| author | Bin Zhao Xiaozhen Huang Sein Chung Min Zhang Yufei Zhong Anhai Liang Zhenmin Zhao Chaofeng Zhu Jingjing Zhao Seunghyun Kim Jimin Kim Ming Wang Shilin Chen Kilwon Cho Yang Wang Zhipeng Kan |
| author_facet | Bin Zhao Xiaozhen Huang Sein Chung Min Zhang Yufei Zhong Anhai Liang Zhenmin Zhao Chaofeng Zhu Jingjing Zhao Seunghyun Kim Jimin Kim Ming Wang Shilin Chen Kilwon Cho Yang Wang Zhipeng Kan |
| author_sort | Bin Zhao |
| collection | DOAJ |
| description | When used in organic solar cells, poly (3,4-ethylenedioxythiophene)-poly (styrenesulfonate) (PEDOT:PSS) aligns interfacial energy levels, promotes hole extraction, blocks electrons, and optimizes the active layer’s morphology. However, with an optimal thickness of approximately 30–40 nm, PEDOT:PSS has insufficient layer thickness tolerance, owing to its low conductivity and hole extraction property. Herein, a hole-selective-molecule doping strategy is proposed to enhance the properties of PEDOT:PSS by introducing MPA2FPh-BT-BA (abbreviated as 2F) into its layer. 2F assembles at the anode to form interfacial dipoles due to its unique donor–acceptor–anchor molecular configuration, altering the anode work function and hole-selective extraction. Additionally, 2F improves the aggregation properties of PEDOT:PSS by forming hydrogen bonds with the PSS group, enhancing the conductivity characteristics. These changes in the PEDOT:PSS layer further influence the overlaying morphology, leading to increased crystalline features of PM6 and the bulk heterojunction of PM6:Y6. When a 2F-PEDOT:PSS (2FPP) layer is used, power conversion efficiencies of 18.3%, 19.2%, and 19.1% are achieved in PM6:Y6, PM6:BTP-eC9, and PM6:L8-BO devices, respectively, outperforming counterparts with PEDOT:PSS. Specifically, the performance of PM6:Y6 devices with a 2FPP layer of 170 nm remains at > 15%, providing valuable guidance for designing a thickness-insensitive hole transport layer for high-efficiency organic solar cells. |
| format | Article |
| id | doaj-art-8a6731ed13ed40caa3c13fbe5c1be1c7 |
| institution | Kabale University |
| issn | 2667-1417 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | eScience |
| spelling | doaj-art-8a6731ed13ed40caa3c13fbe5c1be1c72025-01-04T04:57:22ZengKeAi Communications Co. Ltd.eScience2667-14172025-01-0151100305Hole-selective-molecule doping improves the layer thickness tolerance of PEDOT:PSS for efficient organic solar cellsBin Zhao0Xiaozhen Huang1Sein Chung2Min Zhang3Yufei Zhong4Anhai Liang5Zhenmin Zhao6Chaofeng Zhu7Jingjing Zhao8Seunghyun Kim9Jimin Kim10Ming Wang11Shilin Chen12Kilwon Cho13Yang Wang14Zhipeng Kan15Center on Nanoenergy Research, Carbon Peak and Neutrality Science and Technology Development Institute, School of Physical Science & Technology, Guangxi University, Nanning 530004, ChinaStrait Institute of Flexible Electronics (SIFE, Future Technologies), Fujian Key Laboratory of Flexible Electronics, Fujian Normal University and Strait Laboratory of Flexible Electronics (SLoFE), Fuzhou, Fujian 350117, ChinaDepartment of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Nam-gu, Pohang-si 37673, South KoreaAnhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, ChinaNingbo Tech University, School of Materials Science and Engineering, Ningbo 315100, ChinaCenter on Nanoenergy Research, Carbon Peak and Neutrality Science and Technology Development Institute, School of Physical Science & Technology, Guangxi University, Nanning 530004, ChinaCenter on Nanoenergy Research, Carbon Peak and Neutrality Science and Technology Development Institute, School of Physical Science & Technology, Guangxi University, Nanning 530004, ChinaCenter on Nanoenergy Research, Carbon Peak and Neutrality Science and Technology Development Institute, School of Physical Science & Technology, Guangxi University, Nanning 530004, ChinaCenter on Nanoenergy Research, Carbon Peak and Neutrality Science and Technology Development Institute, School of Physical Science & Technology, Guangxi University, Nanning 530004, ChinaDepartment of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Nam-gu, Pohang-si 37673, South KoreaDepartment of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Nam-gu, Pohang-si 37673, South KoreaCenter on Nanoenergy Research, Carbon Peak and Neutrality Science and Technology Development Institute, School of Physical Science & Technology, Guangxi University, Nanning 530004, ChinaCenter on Nanoenergy Research, Carbon Peak and Neutrality Science and Technology Development Institute, School of Physical Science & Technology, Guangxi University, Nanning 530004, ChinaDepartment of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Nam-gu, Pohang-si 37673, South Korea; Corresponding authors.Strait Institute of Flexible Electronics (SIFE, Future Technologies), Fujian Key Laboratory of Flexible Electronics, Fujian Normal University and Strait Laboratory of Flexible Electronics (SLoFE), Fuzhou, Fujian 350117, China; Corresponding authors.Center on Nanoenergy Research, Carbon Peak and Neutrality Science and Technology Development Institute, School of Physical Science & Technology, Guangxi University, Nanning 530004, China; State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structure, Guangxi University, Nanning 530004, China; Corresponding authors.When used in organic solar cells, poly (3,4-ethylenedioxythiophene)-poly (styrenesulfonate) (PEDOT:PSS) aligns interfacial energy levels, promotes hole extraction, blocks electrons, and optimizes the active layer’s morphology. However, with an optimal thickness of approximately 30–40 nm, PEDOT:PSS has insufficient layer thickness tolerance, owing to its low conductivity and hole extraction property. Herein, a hole-selective-molecule doping strategy is proposed to enhance the properties of PEDOT:PSS by introducing MPA2FPh-BT-BA (abbreviated as 2F) into its layer. 2F assembles at the anode to form interfacial dipoles due to its unique donor–acceptor–anchor molecular configuration, altering the anode work function and hole-selective extraction. Additionally, 2F improves the aggregation properties of PEDOT:PSS by forming hydrogen bonds with the PSS group, enhancing the conductivity characteristics. These changes in the PEDOT:PSS layer further influence the overlaying morphology, leading to increased crystalline features of PM6 and the bulk heterojunction of PM6:Y6. When a 2F-PEDOT:PSS (2FPP) layer is used, power conversion efficiencies of 18.3%, 19.2%, and 19.1% are achieved in PM6:Y6, PM6:BTP-eC9, and PM6:L8-BO devices, respectively, outperforming counterparts with PEDOT:PSS. Specifically, the performance of PM6:Y6 devices with a 2FPP layer of 170 nm remains at > 15%, providing valuable guidance for designing a thickness-insensitive hole transport layer for high-efficiency organic solar cells.http://www.sciencedirect.com/science/article/pii/S2667141724000983PEDOT:PSSThickness toleranceHole extraction |
| spellingShingle | Bin Zhao Xiaozhen Huang Sein Chung Min Zhang Yufei Zhong Anhai Liang Zhenmin Zhao Chaofeng Zhu Jingjing Zhao Seunghyun Kim Jimin Kim Ming Wang Shilin Chen Kilwon Cho Yang Wang Zhipeng Kan Hole-selective-molecule doping improves the layer thickness tolerance of PEDOT:PSS for efficient organic solar cells eScience PEDOT:PSS Thickness tolerance Hole extraction |
| title | Hole-selective-molecule doping improves the layer thickness tolerance of PEDOT:PSS for efficient organic solar cells |
| title_full | Hole-selective-molecule doping improves the layer thickness tolerance of PEDOT:PSS for efficient organic solar cells |
| title_fullStr | Hole-selective-molecule doping improves the layer thickness tolerance of PEDOT:PSS for efficient organic solar cells |
| title_full_unstemmed | Hole-selective-molecule doping improves the layer thickness tolerance of PEDOT:PSS for efficient organic solar cells |
| title_short | Hole-selective-molecule doping improves the layer thickness tolerance of PEDOT:PSS for efficient organic solar cells |
| title_sort | hole selective molecule doping improves the layer thickness tolerance of pedot pss for efficient organic solar cells |
| topic | PEDOT:PSS Thickness tolerance Hole extraction |
| url | http://www.sciencedirect.com/science/article/pii/S2667141724000983 |
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