Synthesis and Characterization of Ternary Colloidal Quantum Dots for Optoelectronics Applications
- Title
- Synthesis and Characterization of Ternary Colloidal Quantum Dots for Optoelectronics Applications
- Author(s)
- Somi Lee
- DGIST Authors
- Somi Lee ; Jong-Soo Lee ; Weon-Sik Chae
- Advisor
- 이종수
- Co-Advisor(s)
- Weon-Sik Chae
- Issued Date
- 2023
- Awarded Date
- 2023-08-01
- Type
- Thesis
- Description
- Colloidal Quantum Dots; Nanoparticles; Hot-Injection method; Cation exchange; 2D-0D hybrid photodetector
- Table Of Contents
-
Part I. Silver Indium Sulfide Colloidal Quantum Dots with Bandgap Tunable Emission via cation exchange 1
1. Introduction 2
2. Experiment Section 4
2.1. Materials 4
2.2. Synthesis of Ag-In-S2 (AIS) QDs 4
2.2.1. Preparation of S-precursor 4
2.2.2. Synthesis of AIS QDs 4
2.3. Fabrication of AIS/WSe2 hybrid photodetector 4
3. Characterization 6
4. Results and Discussion 8
5. Conclusion 19
Part II. Silver Indium (Gallium) Sulfide Colloidal Quantum Dots with Enhanced Luminescence properties via Ga3+ doping 20
1. Introduction 21
2. Experiment Section 23
2.1. Materials 23
2.2. Synthesis of Ag-In(-Ga)-S(AI(G)S) QDs 23
2.2.1. Preparation of Ga-precursor (Ga-oleate) 23
2.2.2. Preparation of S-precursor (ODE-S, TOP-S) 23
2.2.3. Synthesis of Ga(DDTC)3 23
2.2.4. Synthesis of AIS QDs via two-step heating reaction 24
2.2.5. Synthesis of AIGS QDs via single-step heating reaction 24
2.2.6. GaSx shell Formation on AI(G)S QDs via Ga+ doping 25
2.2.7. Zn-treatment with AI(G)S/GaSx QDs 25
2.3. Fabrication of (AIGS/GaSx)/MoS2 hybrid photodetector 25
3. Characterization 26
4. Results and Discussion 28
5. Conclusion 48
Reference 49
- URI
-
http://hdl.handle.net/20.500.11750/46441
http://dgist.dcollection.net/common/orgView/200000684821
- Degree
- Master
- Department
- Department of Energy Science and Engineering
- Publisher
- DGIST
- Related Researcher
-
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Lee, Jong-Soo
- Research Interests Design of new type of multifunctional nanoparticles for energy-related devices; 다기능성 나노재료; 무기물 태양전지; 열전소자
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- Files in This Item:
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- Appears in Collections:
- Department of Energy Science and Engineering Theses Master
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