Ultraviolet photodetectors using hollow p-CuO nanospheres/n-ZnO nanorods with a pn junction structure
DC Field | Value | Language |
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dc.contributor.author | Ji, Yuexing | - |
dc.contributor.author | Jung, Uijin | - |
dc.contributor.author | Xian, Zhanpeng | - |
dc.contributor.author | Kim, Dohyun | - |
dc.contributor.author | Yu, Jiyeon | - |
dc.contributor.author | Park, Jinsub | - |
dc.date.accessioned | 2021-07-30T05:00:34Z | - |
dc.date.available | 2021-07-30T05:00:34Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2020-04 | - |
dc.identifier.issn | 0924-4247 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2590 | - |
dc.description.abstract | We report on ultraviolet (UV) photodetectors with a pn junction structure consisting of hollow p-CuO (h-CuO) nanospheres and n-ZnO nanorods (NRs). To form the pn junction structure, thermal annealing was conducted using a transferred monolayer of Cu-ion-incorporated polymer spheres onto the n-ZnO NRs/n-Si substrate. Device performance was evaluated by comparing the effects of h-CuO nanosphere coverage changed by sphere shrinkage during thermal annealing of Cu-ion-incorporated polymer spheres. Three samples were prepared by varying the transfer times of h-CuO on ZnO NRs: 0 times (Reference), 1 time (CZ-I), and 2 times (CZ-II). The CZ-II-based UV detector shows a fast rising time of 1.8 s and a falling time of 0.26 s, which are faster rising by 2.2 and 1.3 times and faster falling by 3.1 and 32.6 times than those of the CZ-I and Reference UV detectors, respectively, under illumination with UV light at 254 nm. Moreover, the On/Off current ratio of the CZ-II UV detector is 4.58, which is about 3.3 times and 3.5 times higher than that of the CZ-I and Reference devices, respectively. The higher h-CuO coverage on the ZnO NRs that form the pn junction structure can effectively separate the electron and hole and suppress recombination by mutual transfer of photo-generated electrons and holes in the heterojunction. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Ultraviolet photodetectors using hollow p-CuO nanospheres/n-ZnO nanorods with a pn junction structure | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Jinsub | - |
dc.identifier.doi | 10.1016/j.sna.2020.111876 | - |
dc.identifier.scopusid | 2-s2.0-85079688185 | - |
dc.identifier.wosid | 000526109600017 | - |
dc.identifier.bibliographicCitation | SENSORS AND ACTUATORS A-PHYSICAL, v.304, pp.1 - 7 | - |
dc.relation.isPartOf | SENSORS AND ACTUATORS A-PHYSICAL | - |
dc.citation.title | SENSORS AND ACTUATORS A-PHYSICAL | - |
dc.citation.volume | 304 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 7 | - |
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 | Engineering | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.subject.keywordPlus | UV PHOTODETECTOR | - |
dc.subject.keywordPlus | NANOSTRUCTURES | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordAuthor | UV detector | - |
dc.subject.keywordAuthor | Hollow CuO | - |
dc.subject.keywordAuthor | ZnO | - |
dc.subject.keywordAuthor | Transfer of spheres monolayer | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0924424719321594?via%3Dihub | - |
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