Single-Component Organic Solar Cells Based on Intramolecular Charge Transfer Photoabsorption
Conjugated donor–acceptor molecules with intramolecular charge transfer absorption are employed for single-component organic solar cells. Among the five types of donor–acceptor molecules, the strong push–pull structure of DTDCPB resulted in solar cells with high <i>J</i><sub>SC<...
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2021-03-01
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Online Access: | https://www.mdpi.com/1996-1944/14/5/1200 |
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author | Ken-ichi Nakayama Tatsuya Okura Yuki Okuda Jun Matsui Akito Masuhara Tsukasa Yoshida Matthew Schuette White Cigdem Yumusak Phillip Stadler Markus Scharber Niyazi Serdar Sariciftci |
author_facet | Ken-ichi Nakayama Tatsuya Okura Yuki Okuda Jun Matsui Akito Masuhara Tsukasa Yoshida Matthew Schuette White Cigdem Yumusak Phillip Stadler Markus Scharber Niyazi Serdar Sariciftci |
author_sort | Ken-ichi Nakayama |
collection | DOAJ |
description | Conjugated donor–acceptor molecules with intramolecular charge transfer absorption are employed for single-component organic solar cells. Among the five types of donor–acceptor molecules, the strong push–pull structure of DTDCPB resulted in solar cells with high <i>J</i><sub>SC</sub>, an internal quantum efficiency exceeding 20%, and high <i>V</i><sub>OC</sub> exceeding 1 V with little photon energy loss around 0.7 eV. The exciton binding energy (EBE), which is a key factor in enhancing the photocurrent in the single-component device, was determined by quantum chemical calculation. The relationship between the photoexcited state and the device performance suggests that the strong internal charge transfer is effective for reducing the EBE. Furthermore, molecular packing in the film is shown to influence photogeneration in the film bulk. |
first_indexed | 2024-03-09T05:35:16Z |
format | Article |
id | doaj.art-1c1b87d6cafb4614959a099e3d4bb4e4 |
institution | Directory Open Access Journal |
issn | 1996-1944 |
language | English |
last_indexed | 2024-03-09T05:35:16Z |
publishDate | 2021-03-01 |
publisher | MDPI AG |
record_format | Article |
series | Materials |
spelling | doaj.art-1c1b87d6cafb4614959a099e3d4bb4e42023-12-03T12:29:03ZengMDPI AGMaterials1996-19442021-03-01145120010.3390/ma14051200Single-Component Organic Solar Cells Based on Intramolecular Charge Transfer PhotoabsorptionKen-ichi Nakayama0Tatsuya Okura1Yuki Okuda2Jun Matsui3Akito Masuhara4Tsukasa Yoshida5Matthew Schuette White6Cigdem Yumusak7Phillip Stadler8Markus Scharber9Niyazi Serdar Sariciftci10Department of Material and Life Science, Graduate School of Engineering, Osaka University, Osaka 565-0871, JapanFaculty of Engineering, Yamagata University, Yamagata 992-8510, JapanDepartment of Material and Life Science, Graduate School of Engineering, Osaka University, Osaka 565-0871, JapanFaculty of Science, Yamagata University, Yamagata 990-8560, JapanFaculty of Engineering, Yamagata University, Yamagata 992-8510, JapanFaculty of Engineering, Yamagata University, Yamagata 992-8510, JapanDepartment of Physics and Materials Science Program, University of Vermont, Burlington, VT 05405-0125, USALinz Institute of Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University, Linz 4040, AustriaLinz Institute of Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University, Linz 4040, AustriaLinz Institute of Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University, Linz 4040, AustriaLinz Institute of Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University, Linz 4040, AustriaConjugated donor–acceptor molecules with intramolecular charge transfer absorption are employed for single-component organic solar cells. Among the five types of donor–acceptor molecules, the strong push–pull structure of DTDCPB resulted in solar cells with high <i>J</i><sub>SC</sub>, an internal quantum efficiency exceeding 20%, and high <i>V</i><sub>OC</sub> exceeding 1 V with little photon energy loss around 0.7 eV. The exciton binding energy (EBE), which is a key factor in enhancing the photocurrent in the single-component device, was determined by quantum chemical calculation. The relationship between the photoexcited state and the device performance suggests that the strong internal charge transfer is effective for reducing the EBE. Furthermore, molecular packing in the film is shown to influence photogeneration in the film bulk.https://www.mdpi.com/1996-1944/14/5/1200organic solar cellintramolecular charge transferphoton energy lossexciton binding energy |
spellingShingle | Ken-ichi Nakayama Tatsuya Okura Yuki Okuda Jun Matsui Akito Masuhara Tsukasa Yoshida Matthew Schuette White Cigdem Yumusak Phillip Stadler Markus Scharber Niyazi Serdar Sariciftci Single-Component Organic Solar Cells Based on Intramolecular Charge Transfer Photoabsorption Materials organic solar cell intramolecular charge transfer photon energy loss exciton binding energy |
title | Single-Component Organic Solar Cells Based on Intramolecular Charge Transfer Photoabsorption |
title_full | Single-Component Organic Solar Cells Based on Intramolecular Charge Transfer Photoabsorption |
title_fullStr | Single-Component Organic Solar Cells Based on Intramolecular Charge Transfer Photoabsorption |
title_full_unstemmed | Single-Component Organic Solar Cells Based on Intramolecular Charge Transfer Photoabsorption |
title_short | Single-Component Organic Solar Cells Based on Intramolecular Charge Transfer Photoabsorption |
title_sort | single component organic solar cells based on intramolecular charge transfer photoabsorption |
topic | organic solar cell intramolecular charge transfer photon energy loss exciton binding energy |
url | https://www.mdpi.com/1996-1944/14/5/1200 |
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