Title

Yellow-Emitting Alloyed II–VI Quantum Dots: Synthesis, Structural Optimization, and Application in Color Conversion Layers

Alternative Title

황색 발광 합금 II-VI 양자점: 합성, 구조 최적화 및 색 변환 층에서의 응용

DGIST Authors

Jinhee Lee ; Jiwoong Yang ; Ju-Hyuck Lee

Advisor

양지웅

Co-Advisor(s)

Ju-Hyuck Lee

Issued Date

2026

Awarded Date

2026-02-01

Type

Thesis

Description

quantum dots, yellow emitting materials, color conversion layer, white light

Table Of Contents

Ⅰ. Introduction 1
1.1 Requirements and Challenges in Achieving High-Quality White Light 1
1.2 Optical Characteristics and Significance of Yellow-Emitting Quantum Dots 2
1.3 Synthesis Optimization and Application of Yellow CdSe QDs 3
II. Results and discussion 5
2.1. Optical and Structural Characterization of CdSe/ZnSe/ZnS QDs 5
2.2. Optical and Structural Characterization of CdSe/ZnSe/ZnS thick shell QDs 6
2.3. Structural Modification for Improved Optical Properties of QDs 9
2.4. Effect of Core Growth Temperature on Optical Properties 9
2.5. Structural Refinement and Stability Analysis of Graded CdSe/ZnSe/ZnSeS/ZnS QDs 11
2.6. Controlled Thick-Shell Growth of Graded CdSe/ZnSe/ZnSeS/ZnS QDs for Enhanced
Optical Quality 16
2.7. Optimization of Cation–Anion Ratio for Uniform Shell Formation 21
2.8. Summary and Transition to Device Application 25
2.9. Fabrication of Multilayered QD-Based Color Conversion Layers via Transfer Printing 26
2.10. Effect of the Number of Chromatic QD Layers on White-Light Quality of Color
Conversion Layers 29
2.11. Tunable White Emission via Yellow QD layer Thickness Modulation 31

III. Conclusion 34

IV. Experimental Section 35

URI

https://scholar.dgist.ac.kr/handle/20.500.11750/59688
http://dgist.dcollection.net/common/orgView/200000942162

DOI

10.22677/THESIS.200000942162

Degree

Master

Department

Department of Energy Science and Engineering

Publisher

DGIST

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