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2D Hexagonal Boron Nitride Based Processes for Flexible Electronics
2D Hexagonal Boron Nitride Based Processes for Flexible Electronics
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260209102934
- ISBN
- 9798265402172
- DDC
- 620
- 저자명
- Gujrati, Rajat.
- 서명/저자
- 2D Hexagonal Boron Nitride Based Processes for Flexible Electronics
- 발행사항
- [Sl] : Georgia Institute of Technology, 2023
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2023
- 형태사항
- 143 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Mora, Luis B.;Salvestrini, Jean Paul.
- 학위논문주기
- Thesis (Ph.D.)--Georgia Institute of Technology, 2023.
- 초록/해제
- 요약This thesis focuses on advancing the field of flexible electronic devices by utilizing two-dimensional hexagonal boron nitride (2D h-BN) as a release layer. The methodology used in the thesis is the selective area growth (SAG) of III-N materials through quasi van der Waals (vdW) epitaxy on 2D h-BN. This approach is adopted to address and solve the state-of-the-art challenges associated with InGaN/GaN solar cells and micro-light emitting diodes (micro-LEDs).The pathway to achieving efficient InGaN/GaN solar cells is impeded by degradation of the crystalline quality of the InGaN layer beyond a certain critical thickness, the phase separation of InGaN alloy at the high indium content in it, and the presence of the strong polarization charges at the InGaN/GaN hetero-interface. To overcome these challenges we propose a novel design of InGaN/GaN solar cells which includes conformally grown p-GaN, by MBE at low temperature, on top of an InGaN Nano Pyramid (NP) absorber, grown by nano SAG. Further, by coupling this structure with the quasi van der Waals epitaxy on 2D h-BN, two new designs of solar cells (a) conformal NP on copper, and (b) free-standing NP, are proposed. The performance of these solar cells is evaluated by optical and electrical simulations and a complete fabrication process of these solar cells is presented.The primary challenge for micro-LED fabrication has been the lowered performance of tiny micro-LEDs caused by chemical etching that defines individual LEDs and the complexity and cost associated with the lift-off and transfer of these LEDs from sapphire substrates to suitable supports. In this thesis, for the first time, we report a demonstration of coupled vdW epitaxy and SAG, to fabricate micro-LEDs of various shapes down to ultra-tiny sizes of 1.4m. The selective area growth of multi-quantum wells LED heterostructures allows to obtain ultra smooth crystalline sidewalls and vdW epitaxy of 2D h-BN allows simple lift-off and transfer of micro-LEDs. We perform a complete fabrication process of micro-LEDs and its transfer to a flexible copper substrate. Finally, device performances of these high-brightness micro-LEDs are reported.
- 일반주제명
- Silicon
- 일반주제명
- Boron
- 일반주제명
- Organic chemicals
- 일반주제명
- Semiconductors
- 일반주제명
- Lasers
- 일반주제명
- Electric fields
- 일반주제명
- Symmetry
- 일반주제명
- Microscopy
- 일반주제명
- Light emitting diodes
- 일반주제명
- Aluminum
- 일반주제명
- Photovoltaic cells
- 일반주제명
- Copper
- 일반주제명
- Molecular beam epitaxy
- 일반주제명
- 21st century
- 일반주제명
- Indium
- 일반주제명
- Electronics
- 일반주제명
- Transistors
- 일반주제명
- Thin films
- 일반주제명
- Nitrogen
- 일반주제명
- Alternative energy
- 일반주제명
- Atomic physics
- 일반주제명
- Condensed matter physics
- 일반주제명
- Electrical engineering
- 일반주제명
- Materials science
- 일반주제명
- Optics
- 일반주제명
- Organic chemistry
- 일반주제명
- Electromagnetics
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260203s2023 us c eng d■001000017366047
■00520260209102934
■006m o d
■007cr#unu||||||||
■020 ▼a9798265402172
■035 ▼a(MiAaPQ)AAI32316174
■035 ▼a(MiAaPQ)GeorgiaTech72716
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a620
■1001 ▼aGujrati, Rajat.
■24510▼a2D Hexagonal Boron Nitride Based Processes for Flexible Electronics
■260 ▼a[Sl]▼bGeorgia Institute of Technology▼c2023
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2023
■300 ▼a143 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Mora, Luis B.;Salvestrini, Jean Paul.
■5021 ▼aThesis (Ph.D.)--Georgia Institute of Technology, 2023.
■520 ▼aThis thesis focuses on advancing the field of flexible electronic devices by utilizing two-dimensional hexagonal boron nitride (2D h-BN) as a release layer. The methodology used in the thesis is the selective area growth (SAG) of III-N materials through quasi van der Waals (vdW) epitaxy on 2D h-BN. This approach is adopted to address and solve the state-of-the-art challenges associated with InGaN/GaN solar cells and micro-light emitting diodes (micro-LEDs).The pathway to achieving efficient InGaN/GaN solar cells is impeded by degradation of the crystalline quality of the InGaN layer beyond a certain critical thickness, the phase separation of InGaN alloy at the high indium content in it, and the presence of the strong polarization charges at the InGaN/GaN hetero-interface. To overcome these challenges we propose a novel design of InGaN/GaN solar cells which includes conformally grown p-GaN, by MBE at low temperature, on top of an InGaN Nano Pyramid (NP) absorber, grown by nano SAG. Further, by coupling this structure with the quasi van der Waals epitaxy on 2D h-BN, two new designs of solar cells (a) conformal NP on copper, and (b) free-standing NP, are proposed. The performance of these solar cells is evaluated by optical and electrical simulations and a complete fabrication process of these solar cells is presented.The primary challenge for micro-LED fabrication has been the lowered performance of tiny micro-LEDs caused by chemical etching that defines individual LEDs and the complexity and cost associated with the lift-off and transfer of these LEDs from sapphire substrates to suitable supports. In this thesis, for the first time, we report a demonstration of coupled vdW epitaxy and SAG, to fabricate micro-LEDs of various shapes down to ultra-tiny sizes of 1.4m. The selective area growth of multi-quantum wells LED heterostructures allows to obtain ultra smooth crystalline sidewalls and vdW epitaxy of 2D h-BN allows simple lift-off and transfer of micro-LEDs. We perform a complete fabrication process of micro-LEDs and its transfer to a flexible copper substrate. Finally, device performances of these high-brightness micro-LEDs are reported.
■590 ▼aSchool code: 0078.
■650 4▼aSilicon
■650 4▼aBoron
■650 4▼aOrganic chemicals
■650 4▼aSemiconductors
■650 4▼aLasers
■650 4▼aElectric fields
■650 4▼aSymmetry
■650 4▼aMicroscopy
■650 4▼aChemical vapor deposition
■650 4▼aLight emitting diodes
■650 4▼aAluminum
■650 4▼aPhotovoltaic cells
■650 4▼aCopper
■650 4▼aMolecular beam epitaxy
■650 4▼a21st century
■650 4▼aIndium
■650 4▼aElectronics
■650 4▼aTransistors
■650 4▼aThin films
■650 4▼aAtoms & subatomic particles
■650 4▼aNitrogen
■650 4▼aAlternative energy
■650 4▼aAtomic physics
■650 4▼aCondensed matter physics
■650 4▼aElectrical engineering
■650 4▼aMaterials science
■650 4▼aOptics
■650 4▼aOrganic chemistry
■650 4▼aElectromagnetics
■690 ▼a0363
■690 ▼a0748
■690 ▼a0611
■690 ▼a0544
■690 ▼a0794
■690 ▼a0752
■690 ▼a0490
■690 ▼a0607
■71020▼aGeorgia Institute of Technology.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0078
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17366047▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


