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

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 169
  • Download : 0
Group 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.
Advisors
Cho, Yong-Hoonresearcher조용훈researcher
Description
한국과학기술원 :물리학과,
Publisher
한국과학기술원
Issue Date
2018
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 물리학과, 2018.8,[vi, 62 p. :]

Keywords

semiconductor quantum dot▼aultraviolet light emitter▼asingle photon emitter▼alinewidth broadening▼aphotoelectrochemical etching; 반도체 양자점▼a자외선 광원▼a단일 광자 광원▼a선폭증가▼a광전기화학 식각

URI
http://hdl.handle.net/10203/264668
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=827880&flag=dissertation
Appears in Collection
PH-Theses_Ph.D.(박사논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0