Studies on group III-nitride quantum dots grown on three-dimensional structures : from classical to quantum light source = 3차원 구조체 위에 성장된 질화물 반도체 양자점의 분석연구 : 고전광원에서 양자광원까지from classical to quantum light source

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dc.contributor.advisorCho, Yong-Hoon-
dc.contributor.advisor조용훈-
dc.contributor.authorCho, Jong-Hoi-
dc.date.accessioned2019-08-22T02:41:39Z-
dc.date.available2019-08-22T02:41:39Z-
dc.date.issued2018-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=827880&flag=dissertationen_US
dc.identifier.urihttp://hdl.handle.net/10203/264668-
dc.description학위논문(박사) - 한국과학기술원 : 물리학과, 2018.8,[vi, 62 p. :]-
dc.description.abstractGroup III-nitride semiconductors have been received much attention for optoelectronic devices. These include manipulation of emission wavelength from ultraviolet (~210 nm) to near infrared (~1.7 μm) via quaternary alloy $Al_xGa_{1-x}In_yN$, p-type doping and large exciton binding energy. In particular, semiconductor quantum dots (QDs) possess a variety of attractive properties for classical and quantum light source. In this dissertation, we proposed the group III-nitride QDs grown on three-dimensional structures for broadband ultraviolet light emitter and single photon emitter, respectively. For the broadband ultraviolet light emitter, we fabricated ensemble GaN QDs grown on hexagonal truncated pyramid structures. Consequently, it ultimately rendered a broadband ultraviolet spectrum range covering from ~400 nm to ~270 nm with high efficiency. For the single photon emitter, we fabricated single InGaN QD grown on nano-pyramid structure. We successfully demonstrated single photon emitter with improved linewidth broadening. We proposed desirable structure design using photoelectrochemical etching method for the improvement of single photon purity even at the elevated temperature. We expect our works can ignite new interests for the community and expand the horizon for QD applications ranged over classical and quantum area.-
dc.languageeng-
dc.publisher한국과학기술원-
dc.subjectsemiconductor quantum dot▼aultraviolet light emitter▼asingle photon emitter▼alinewidth broadening▼aphotoelectrochemical etching-
dc.subject반도체 양자점▼a자외선 광원▼a단일 광자 광원▼a선폭증가▼a광전기화학 식각-
dc.titleStudies on group III-nitride quantum dots grown on three-dimensional structures : from classical to quantum light source = 3차원 구조체 위에 성장된 질화물 반도체 양자점의 분석연구 : 고전광원에서 양자광원까지-
dc.title.alternativefrom classical to quantum light source-
dc.typeThesis(Ph.D)-
dc.identifier.CNRN325007-
dc.description.department한국과학기술원 :물리학과,-
dc.contributor.alternativeauthor조종회-
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