Asymmetrically contacted germanium photodiode using a metal-interlayer-semiconductor-metal structure for extremely large dark current suppression
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zang, Hwan-Jun | - |
dc.contributor.author | Kim, Gwang-Sik | - |
dc.contributor.author | Park, Gil-Jae | - |
dc.contributor.author | Choi, Yong-Soo | - |
dc.contributor.author | Yu, Hyun-Yong | - |
dc.date.accessioned | 2021-09-03T21:07:31Z | - |
dc.date.available | 2021-09-03T21:07:31Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2016-08-15 | - |
dc.identifier.issn | 0146-9592 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/87814 | - |
dc.description.abstract | In this study, we proposed germanium (Ge) metal-interlayer-semiconductor-metal (MISM) photodiodes (PD), with an anode of a metal-interlayer-semiconductor (MIS) contact and a cathode of a metal-semiconductor (MS) contact, to efficiently suppress the dark current of Ge PD. We selected titanium dioxide (TiO2) as an interlayer material for the MIS contact, due to its large valence band offset and negative conduction band offset to Ge. We significantly suppress the dark current of Ge PD by introducing the MISM structure with a TiO2 interlayer, as this enhances the hole Schottky barrier height, and thus acts as a large barrier for holes. In addition, it collects photo-generated carriers without degradation, due to its negative conduction band offset to Ge. This reduces the dark current of Ge MISM PDs by x8000 for 7-nm-thick TiO2 interlayer, while its photo current is still comparable to that of Ge metal-semiconductor-metal (MSM) PDs. Furthermore, the proposed Ge PD shows x6; 600 improvement of the normalized photo-to-dark-current ratio (NPDR) at a wavelength of 1.55 mu m. The proposed Ge MISM PD shows considerable promise for low power and high sensitivity Ge-based optoelectronic applications. (C) 2016 Optical Society of America | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | OPTICAL SOC AMER | - |
dc.subject | MSM PHOTODETECTORS | - |
dc.subject | GE-PHOTODETECTORS | - |
dc.subject | SCHOTTKY-BARRIER | - |
dc.subject | HIGH-PERFORMANCE | - |
dc.subject | HIGH-SPEED | - |
dc.subject | SILICON | - |
dc.subject | SEGREGATION | - |
dc.subject | REDUCTION | - |
dc.subject | PLATFORM | - |
dc.subject | LAYER | - |
dc.title | Asymmetrically contacted germanium photodiode using a metal-interlayer-semiconductor-metal structure for extremely large dark current suppression | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yu, Hyun-Yong | - |
dc.identifier.doi | 10.1364/OL.41.003686 | - |
dc.identifier.scopusid | 2-s2.0-84983050365 | - |
dc.identifier.wosid | 000381975900004 | - |
dc.identifier.bibliographicCitation | OPTICS LETTERS, v.41, no.16, pp.3686 - 3689 | - |
dc.relation.isPartOf | OPTICS LETTERS | - |
dc.citation.title | OPTICS LETTERS | - |
dc.citation.volume | 41 | - |
dc.citation.number | 16 | - |
dc.citation.startPage | 3686 | - |
dc.citation.endPage | 3689 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Optics | - |
dc.relation.journalWebOfScienceCategory | Optics | - |
dc.subject.keywordPlus | MSM PHOTODETECTORS | - |
dc.subject.keywordPlus | GE-PHOTODETECTORS | - |
dc.subject.keywordPlus | SCHOTTKY-BARRIER | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.subject.keywordPlus | HIGH-SPEED | - |
dc.subject.keywordPlus | SILICON | - |
dc.subject.keywordPlus | SEGREGATION | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | PLATFORM | - |
dc.subject.keywordPlus | LAYER | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea 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.