Title

Structural Optimization and Optoelectronic Property Enhancement of InP Core-Shell Quantum Dots via Surface and Interface Engineering

Alternative Title

표면 및 계면 엔지니어링을 통한 인듐 포스파이드 코어-쉘 양자점의 구조적 최적화 및 광전 특성 향상

DGIST Authors

Cha Junwoo ; Jiwoong Yang ; Ju-Hyuck Lee

Advisor

양지웅

Co-Advisor(s)

Ju-Hyuck Lee

Issued Date

2026

Awarded Date

2026-08-01

Type

Thesis

Description

InP quantom dots, Cd-free, ZnF2-assisted etching, surface engineering, core-shell structure, optoelectronic properties

Table Of Contents

Ⅰ. Introduction 1
1.1 Requirements for the Synthesis of Cd-free InP Quantom Dots 1
1.2 Synthetic Challenges in Achieving High-Quality InP Quantom Dots 2
1.3 Shell-Engineering Strategies for Achieving High Optoelectronic Property 3
II. Results and discussion 4
2.1. Tuning the Excitonic Absorption Peak of InP Red Core to the Target Wavelength 5
2.2. Optimization InP Red Core via Heat-up 6
2.3. Structural Optimization of the InP/ZnSe/ZnS Core/Shell/Shell Structure 8
2.4. Elucidation of Using ZnF2 in Shell Growth 10
2.5. Demonstrate the role of ZnF2 13
2.6. Optimization of ZnF2 Amounts in Shell Growth 15
2.7. Optimization of Shell Growth Temperature of ZnSe shell 18
2.8. Optimization of Injected ZnSe Shell Precursor Amounts 19
2.9. Optimization of Additionally Injected ZnF2 During Shell Growth 21
2.10. Optimization of Purification Step 25
2.11. Verification of Optical stability of InP/ZnSe/ZnS Quantom Dots 26
III. Conclusion 27
IV. Experimental Section 28

URI

https://scholar.dgist.ac.kr/handle/20.500.11750/60792
http://dgist.dcollection.net/common/orgView/200001016494

DOI

10.22677/THESIS.200001016494

Degree

Master

Department

Department of Energy Science and Engineering

Publisher

DGIST

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