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양창덕

Yang, Changduk
Advanced Tech-Optoelectronic Materials Synthesis Lab.
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dc.citation.startPage 2310811 -
dc.citation.title ADVANCED MATERIALS -
dc.contributor.author Yin, Bingyan -
dc.contributor.author Zhou, Xia -
dc.contributor.author Li, Yuyang -
dc.contributor.author Hu, Gangjian -
dc.contributor.author Wei, Wenkui -
dc.contributor.author Yang, Mingqun -
dc.contributor.author Jeong, Seonghun -
dc.contributor.author Deng, Wanyuan -
dc.contributor.author Wu, Baoqi -
dc.contributor.author Cao, Yunhao -
dc.contributor.author Huang, Bo -
dc.contributor.author Pan, Langheng -
dc.contributor.author Yang, Xiaoru -
dc.contributor.author Fu, Zhenyu -
dc.contributor.author Fang, Yanjun -
dc.contributor.author Shen, Liang -
dc.contributor.author Yang, Changduk -
dc.contributor.author Wu, Hongbin -
dc.contributor.author Lan, Linfeng -
dc.contributor.author Huang, Fei -
dc.contributor.author Cao, Yong -
dc.contributor.author Duan, Chunhui -
dc.date.accessioned 2024-04-04T10:05:10Z -
dc.date.available 2024-04-04T10:05:10Z -
dc.date.created 2024-04-03 -
dc.date.issued 2024-02 -
dc.description.abstract Detecting short-wavelength infrared (SWIR) light has underpinned several emerging technologies. However, the development of highly sensitive organic photodetectors (OPDs) operating in the SWIR region is hindered by their poor external quantum efficiencies (EQEs) and high dark currents. Herein, the development of high-sensitivity SWIR-OPDs with an efficient photoelectric response extending up to 1.3 mu m is reported. These OPDs utilize a new ultralow-bandgap molecular semiconductor featuring a quinoidal tricyclic electron-deficient central unit and multiple non-covalent conformation locks. The SWIR-OPD achieves an unprecedented EQE of 26% under zero bias and an even more impressive EQE of up to 41% under a -4 V bias at 1.10 mu m, effectively pushing the detection limit of silicon photodetectors. Additionally, the low energetic disorder and trap density in the active layer lead to significant suppression of thermal-generation carriers and dark current, resulting in excellent detectivity (Dsh*) exceeding 1013 Jones from 0.50 to 1.21 mu m and surpassing 1012 Jones even at 1.30 mu m under zero bias, marking the highest achievements for OPDs beyond the silicon limit to date. Validation with photoplethysmography measurements, a spectrometer prototype in the 0.35-1.25 mu m range, and image capture under 1.20 mu m irradiation demonstrate the extensive applications of this SWIR-OPD. A quinoidal molecular semiconductor, with a photoelectric response of up to 1.3 mu m, is developed. The resulting photodetector affords unprecedented external quantum efficiency (EQE) of 26% and 41% at a wavelength of 1.10 mu m under zero bias and a reverse bias, respectively. Moreover, owing to the low trap density, the photodetector demonstrates detectivity exceeding 1012 Jones from 0.3-1.3 mu m. image -
dc.identifier.bibliographicCitation ADVANCED MATERIALS, pp.2310811 -
dc.identifier.doi 10.1002/adma.202310811 -
dc.identifier.issn 0935-9648 -
dc.identifier.scopusid 2-s2.0-85185921932 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/81956 -
dc.identifier.wosid 001173275900001 -
dc.language 영어 -
dc.publisher WILEY-V C H VERLAG GMBH -
dc.title Sensitive Organic Photodetectors With Spectral Response up to 1.3 μm Using a Quinoidal Molecular Semiconductor -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter -
dc.relation.journalResearchArea Chemistry; Science & Technology - Other Topics; Materials Science; Physics -
dc.type.docType Article; Early Access -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor detectivity -
dc.subject.keywordAuthor external quantum efficiency -
dc.subject.keywordAuthor organic photodetectors -
dc.subject.keywordAuthor quinoidal molecular semiconductor -
dc.subject.keywordAuthor short-wavelength infrared photodetection -
dc.subject.keywordPlus DONOR-ACCEPTOR POLYMERS -
dc.subject.keywordPlus 300 NM -
dc.subject.keywordPlus PERFORMANCE -
dc.subject.keywordPlus MORPHOLOGY -
dc.subject.keywordPlus GAP -

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