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Kwon, Tae-Hyuk
Energy Recognition
Research Interests
  • Energy transfer, organic solar cells, supercapacitor, ultrasonic spray chemistry, dithienothiophene, iridium complexes, phosphorescent bioapplications

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A Resonance Raman spectroscopic study on charge transfer enhancement in photosensitizers

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dc.contributor.author Kim, Wang-Hyo ko
dc.contributor.author Mapley, Joseph, I ko
dc.contributor.author Roh, Deok-Ho ko
dc.contributor.author Kim, Jeong Soo ko
dc.contributor.author Yoon, So Yeon ko
dc.contributor.author Gordon, Keith C. ko
dc.contributor.author Kwon, Tae-Hyuk ko
dc.date.available 2021-11-25T08:08:14Z -
dc.date.created 2021-11-22 ko
dc.date.issued 2021-12 ko
dc.identifier.citation MATERIALS TODAY ADVANCES, v.12, pp.100180 ko
dc.identifier.issn 2590-0498 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/54863 -
dc.description.abstract The charge transfer (CT) properties of photosensitizers largely determine the photovoltaic performances of dye sensitized solar cells (DSSCs). Thus, understanding the CT properties of photosensitizers is key to further improving the performances of DSSCs. We herein investigated the underlying relationship be-tween the molecular structures and CT properties of the photosensitizers using resonance Raman (RR) spectroscopy and density functional theory (DFT) calculations. RR spectroscopy combined with DFT calculations showed that the presence of a triple bond (T-D1, T-D2, and T-D3) enhanced the degree of CT from the donor to the acceptor. In addition, the presence of electron donating groups (EDGs) on the donor (T-D2 and T-D3) further increased the CT properties of the donor. Moreover, DFT analysis based on the harmonic oscillator model of aromaticity revealed that the presence of a triple bond and an EDG increased the quinoidal character of the photosensitizer in the excited state. Finally, it was found that the degree of CT properties exhibited by each photosensitizer was in good agreement with the order of the DSSC performances. (c) 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). ko
dc.language 영어 ko
dc.publisher ELSEVIER ko
dc.title A Resonance Raman spectroscopic study on charge transfer enhancement in photosensitizers ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85117812715 ko
dc.identifier.wosid 000712062500006 ko
dc.type.rims ART ko
dc.identifier.doi 10.1016/j.mtadv.2021.100180 ko
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S2590049821000503?via%3Dihub ko
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