Defect suppression and photoresponsivity enhancement in methylammonium lead halide perovskites by CdSe/ZnS quantum dots
DC Field | Value | Language |
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dc.contributor.author | Thi Kim Oanh Vu | - |
dc.contributor.author | Cho, Il-Wook | - |
dc.contributor.author | Oh, Jaewon | - |
dc.contributor.author | Lee, Dong Uk | - |
dc.contributor.author | Ryu, Mee-Yi | - |
dc.contributor.author | Kim, Eun Kyu | - |
dc.date.accessioned | 2022-07-06T20:36:49Z | - |
dc.date.available | 2022-07-06T20:36:49Z | - |
dc.date.created | 2021-05-13 | - |
dc.date.issued | 2021-05 | - |
dc.identifier.issn | 0021-9797 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/141989 | - |
dc.description.abstract | Potential strategies such as surface passivation and perovskite material halide mixing may protect material surfaces, improve luminescence, and reduce charge traps for device stability. In this study, we used deep level transient spectroscopy to investigate the effect of CdSe/ZnS core-shell quantum dots (QDs) on defect states and carrier transport in methylammonium (MA) lead halide perovskites (CH3NH3PbX3 where X = I, Br). In MAPbI3 and MAPbI2Br films with CdSe/ZnS QDs, the density of hole traps located at Ev + 0.37 eV and Ev + 0.56 eV was reduced dramatically. Deep traps at Ev + 0.78 eV and Ev + 1.08 eV were removed, and one broad electron trap signal dominated. Film photoresponsivity under 600-nm wavelength light and a bias voltage of ?0.7 V was 10 and 18 mA/W, which is 100 and 27 times larger than the 0.1 and 0.67 mA/W of bare perovskites (PS), respectively. This demonstrates that carrier transport was enhanced due to defect suppression. Our findings on defect suppression and photoresponsivity enhancement provide an important direction for optimizing high-performance PS device fabrication. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | Academic Press Inc. | - |
dc.title | Defect suppression and photoresponsivity enhancement in methylammonium lead halide perovskites by CdSe/ZnS quantum dots | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Eun Kyu | - |
dc.identifier.doi | 10.1016/j.jcis.2021.01.037 | - |
dc.identifier.scopusid | 2-s2.0-85100113209 | - |
dc.identifier.wosid | 000624037400003 | - |
dc.identifier.bibliographicCitation | Journal of Colloid and Interface Science, v.590, pp.19 - 27 | - |
dc.relation.isPartOf | Journal of Colloid and Interface Science | - |
dc.citation.title | Journal of Colloid and Interface Science | - |
dc.citation.volume | 590 | - |
dc.citation.startPage | 19 | - |
dc.citation.endPage | 27 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.subject.keywordPlus | Cadmium compounds | - |
dc.subject.keywordPlus | Carrier transport | - |
dc.subject.keywordPlus | Deep level transient spectroscopy | - |
dc.subject.keywordPlus | II-VI semiconductors | - |
dc.subject.keywordPlus | Lead metallography | - |
dc.subject.keywordPlus | Nanocrystals | - |
dc.subject.keywordPlus | Passivation | - |
dc.subject.keywordPlus | Perovskite | - |
dc.subject.keywordPlus | Quantum chemistry | - |
dc.subject.keywordPlus | Semiconductor quantum dots | - |
dc.subject.keywordPlus | CdSe/ZnS quantum dots | - |
dc.subject.keywordPlus | Core-shell quantum dots | - |
dc.subject.keywordPlus | Density of holes | - |
dc.subject.keywordPlus | Device fabrications | - |
dc.subject.keywordPlus | Halide perovskites | - |
dc.subject.keywordPlus | Material surface | - |
dc.subject.keywordPlus | Photoresponsivity | - |
dc.subject.keywordPlus | Surface passivation | - |
dc.subject.keywordPlus | Lead compounds | - |
dc.subject.keywordAuthor | CdSe/ZnS quantum dots | - |
dc.subject.keywordAuthor | Deep level transient spectroscopy | - |
dc.subject.keywordAuthor | Defects suppression | - |
dc.subject.keywordAuthor | Methylammonium lead halide perovskites | - |
dc.subject.keywordAuthor | Photoresponsivity enhancement | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0021979721000412?via%3Dihub | - |
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