Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Choi, Changwon | - |
dc.contributor.author | Jeon, Woojin | - |
dc.contributor.author | Lansac, Yves | - |
dc.contributor.author | Jang, Yun Hee | - |
dc.date.accessioned | 2022-11-09T17:48:12Z | - |
dc.date.available | 2022-11-09T17:48:12Z | - |
dc.date.created | 2022-08-08 | - |
dc.date.issued | 2022-07 | - |
dc.identifier.issn | 1932-7447 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/17091 | - |
dc.description.abstract | Full-color image sensors for retinal prosthesis and artificial vision would require organic RGB-color-selective photo diode components. The most challenging components are those for red-selective absorption. Molecular dyes such as phthalocyanine and squaraine require vacuum deposition, and red-light absorption achieved by solution-processed push-pull copolymers is often accompanied by higher-energy absorption in green and blue regions. Push-pull copolymers designed to suppress such highenergy absorption show their low-energy absorption in the IR region rather than in the red region. Herein, we define red selectivity (RS) of a polymer as the ratio of its red-region absorption (the area under the absorption spectrum between 625 and 800 nm) to its total absorption in the visible and near-IR regions (the area between 400 and 1000 nm) and propose a narrow-wide (rather than push-pull) design rule for RS-enhancing copolymers, (1) highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) localized in the narrow-band-gap unit and HOMO-1 and LUMO+1 localized in the other wide-band-gap unit and (2) hybridization between the two units minimized by introducing a twist in the backbone. Doping them with red-selective nonfullerene acceptors would enhance charge transport and sensitivity without sacrificing RS. Such polymers tuned for strong absorption of skin-penetrating red light would be also useful for spatially controlled wireless (noninvasive) power supply to photovoltaic-coupled organic (conformable/ biocompatible) electronic implant. © 2022 American Chemical Society. All rights reserved. | - |
dc.language | English | - |
dc.publisher | American Chemical Society | - |
dc.title | Narrow-Wide Copolymer for Strong Red-Color-Selective Absorption | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acs.jpcc.2c02945 | - |
dc.identifier.wosid | 000830888700001 | - |
dc.identifier.scopusid | 2-s2.0-85136214663 | - |
dc.identifier.bibliographicCitation | Journal of Physical Chemistry C, v.126, no.29, pp.12230 - 12237 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordPlus | POLYMERS | - |
dc.subject.keywordPlus | VISION | - |
dc.subject.keywordPlus | PHOTODIODES | - |
dc.citation.endPage | 12237 | - |
dc.citation.number | 29 | - |
dc.citation.startPage | 12230 | - |
dc.citation.title | Journal of Physical Chemistry C | - |
dc.citation.volume | 126 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.type.docType | Article | - |
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