DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Un-Hak | ko |
dc.contributor.author | Park, Byoungwook | ko |
dc.contributor.author | Rhee, Seunghyun | ko |
dc.contributor.author | Ha, Jong-Woon | ko |
dc.contributor.author | Whang, Dong Ryeol | ko |
dc.contributor.author | Eun, Hyeong Ju | ko |
dc.contributor.author | Kim, Jong H. | ko |
dc.contributor.author | Shim, Yeongseok | ko |
dc.contributor.author | Heo, Junseok | ko |
dc.contributor.author | Lee, Changjin | ko |
dc.contributor.author | Kim, Bumjoon J. | ko |
dc.contributor.author | Yoon, Sung Cheol | ko |
dc.contributor.author | Lee, Jaewon | ko |
dc.contributor.author | Ko, Seo-Jin | ko |
dc.date.accessioned | 2023-09-10T04:01:22Z | - |
dc.date.available | 2023-09-10T04:01:22Z | - |
dc.date.created | 2023-05-22 | - |
dc.date.created | 2023-05-22 | - |
dc.date.issued | 2023-09 | - |
dc.identifier.citation | ADVANCED OPTICAL MATERIALS, v.11, no.17 | - |
dc.identifier.issn | 2195-1071 | - |
dc.identifier.uri | http://hdl.handle.net/10203/312375 | - |
dc.description.abstract | Organic photodetectors (OPDs) based on non-fullerene acceptors (NFAs) have received considerable attention because of their potential for use in various commercial applications as near-infrared (NIR) light sensing platforms. However, recent OPDs suffer from low NIR photoresponse and large dark/noise currents with narrow bandgap organic photoactive materials. Herein, a pi-bridge molecular engineering strategy replacing alkoxythienyl with benzothiadiazole for ultra-narrow bandgap (ultra-NBG) NFAs is designed to achieve simultaneously high photoresponse at NIR region and low noise current density, thereby leading to excellent NIR (approximate to 1050 nm) detectivity (D*). The newly synthesized ultra-NBG NFAs, namely COB and CBT with optical bandgaps below 1.14 eV, present high responsivity (R) with 0.369 and 0.080 A W-1, respectively, at a wavelength of 1050 nm. Especially, with effectively suppressed noise current density, COB-based OPD exhibits a high NIR (approximate to 1050 nm) D* value of 2.18 x 10(11) cm Hz(1/2) W-1 at -0.5 V bias. The obtained R and D* values for these NFAs exceed or are comparable to those of a commercial Si photodetector at 1050 nm. This work provides important insight into the pi-bridge molecular engineering strategy for ultra-NBG NFAs, which facilitate achieving highly sensitive NIR OPDs with high NIR photoresponse and low dark/noise current. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Achieving Highly Sensitive Near-Infrared Organic Photodetectors using Asymmetric Non-Fullerene Acceptor | - |
dc.type | Article | - |
dc.identifier.wosid | 000981828400001 | - |
dc.identifier.scopusid | 2-s2.0-85158070920 | - |
dc.type.rims | ART | - |
dc.citation.volume | 11 | - |
dc.citation.issue | 17 | - |
dc.citation.publicationname | ADVANCED OPTICAL MATERIALS | - |
dc.identifier.doi | 10.1002/adom.202300312 | - |
dc.contributor.localauthor | Kim, Bumjoon J. | - |
dc.contributor.nonIdAuthor | Park, Byoungwook | - |
dc.contributor.nonIdAuthor | Rhee, Seunghyun | - |
dc.contributor.nonIdAuthor | Ha, Jong-Woon | - |
dc.contributor.nonIdAuthor | Whang, Dong Ryeol | - |
dc.contributor.nonIdAuthor | Eun, Hyeong Ju | - |
dc.contributor.nonIdAuthor | Kim, Jong H. | - |
dc.contributor.nonIdAuthor | Shim, Yeongseok | - |
dc.contributor.nonIdAuthor | Heo, Junseok | - |
dc.contributor.nonIdAuthor | Lee, Changjin | - |
dc.contributor.nonIdAuthor | Yoon, Sung Cheol | - |
dc.contributor.nonIdAuthor | Lee, Jaewon | - |
dc.contributor.nonIdAuthor | Ko, Seo-Jin | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | ultra narrow bandgap | - |
dc.subject.keywordAuthor | NIR absorbing materials | - |
dc.subject.keywordAuthor | non-fullerene acceptors | - |
dc.subject.keywordAuthor | asymmetric structure | - |
dc.subject.keywordAuthor | intramolecular interaction | - |
dc.subject.keywordAuthor | organic photodetectors | - |
dc.subject.keywordPlus | POLYMER SOLAR-CELLS | - |
dc.subject.keywordPlus | EXTERNAL QUANTUM EFFICIENCY | - |
dc.subject.keywordPlus | DARK | - |
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