Defects activated photoluminescence in two-dimensional semiconductors: interplay between bound, charged, and free excitons
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Tongay, S (Tongay, Sefaattin) | - |
dc.contributor.author | Suh, J (Suh, Joonki) | - |
dc.contributor.author | Ataca, C (Ataca, Can) | - |
dc.contributor.author | Fan, W (Fan, Wen) | - |
dc.contributor.author | Luce, A (Luce, Alexander) | - |
dc.contributor.author | Kang, JS (Kang, Jeong Seuk) | - |
dc.contributor.author | Liu, J (Liu, Jonathan) | - |
dc.contributor.author | Ko, C (Ko, Changhyun) | - |
dc.contributor.author | Raghunathanan, R (Raghunathana | - |
dc.contributor.author | Zhou, J (Zhou, Jian) | - |
dc.contributor.author | Ogletree, F (Ogletree, Frank) | - |
dc.contributor.author | Li, JB (Li, Jingbo) | - |
dc.contributor.author | Grossman, JC (Grossman, Jeffre | - |
dc.contributor.author | Wu, JQ (Wu, Junqiao)...More... | - |
dc.date.accessioned | 2022-04-19T10:09:12Z | - |
dc.date.available | 2022-04-19T10:09:12Z | - |
dc.date.issued | 2013-09 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147424 | - |
dc.description.abstract | Point defects in semiconductors can trap free charge carriers and localize excitons. The interaction between these defects and charge carriers becomes stronger at reduced dimensionalities, and is expected to greatly influence physical properties of the hosting material. We investigated effects of anion vacancies in monolayer transition metal dichalcogenides as two-dimensional (2D) semiconductors where the vacancies density is controlled by alpha-particle irradiation or thermal-annealing. We found a new, sub-bandgap emission peak as well as increase in overall photoluminescence intensity as a result of the vacancy generation. Interestingly, these effects are absent when measured in vacuum. We conclude that in opposite to conventional wisdom, optical quality at room temperature cannot be used as criteria to assess crystal quality of the 2D semiconductors. Our results not only shed light on defect and exciton physics of 2D semiconductors, but also offer a new route toward tailoring optical properties of 2D semiconductors by defect engineering. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.title | Defects activated photoluminescence in two-dimensional semiconductors: interplay between bound, charged, and free excitons | - |
dc.type | Article | - |
dc.publisher.location | 영국 | - |
dc.identifier.doi | 10.1038/srep02657 | - |
dc.identifier.scopusid | 2-s2.0-84884246363 | - |
dc.identifier.wosid | 000324285000005 | - |
dc.identifier.bibliographicCitation | SCIENTIFIC REPORTS, v.3 | - |
dc.citation.title | SCIENTIFIC REPORTS | - |
dc.citation.volume | 3 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | Molybdenum Disulfide | - |
dc.subject.keywordPlus | Monolayer | - |
dc.subject.keywordPlus | Van Der Waals | - |
dc.identifier.url | https://www.nature.com/articles/srep02657 | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
Sookmyung Women's University. Cheongpa-ro 47-gil 100 (Cheongpa-dong 2ga), Yongsan-gu, Seoul, 04310, Korea02-710-9127
Copyright©Sookmyung Women's University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.