Kim Jungmin. (2025). High Resolution Direct Photo-crosslinking Patterning of QDs Using Non-heterocyclic Aromatic Thiol Molecules. doi: 10.22677/THESIS.200000839581
CHAPTER 1. INTRODUCTION 1 1.1. Background 1 1.1.1. Quantum Dot 1 1.1.2. Direct Optical Lithography of Functional Inorganic Nanomaterials (DOLFIN) 3 1.1.3. Hybrid Photodetector 5 1.1.4. Quantum Dot Light Emitting Diodes (QLEDs) 7 CHAPTER 2. EXPERIMENTAL SECTION 9 2.1. Synthesis of CdSe/CdZnS Quantum Dot 9 2.1.1. Materials 9 2.1.2. Synthesis of CdSe Core 9 2.1.3. Synthesis of CdSe/CdZnS Core/Shell 10 2.2. Growth of few-layer MoS2 10 2.2.1. Chemicals and Materials 10 2.2.2. Synthesis of MoS2 10 2.3. Ligand Crosslinking using TBBT (Hybrid Photodetector) 11 2.4. CdSe/CdZnS/MoS2 Hybrid Photodetector Device Fabrication 11 2.5. Ligand Crosslinking using TBBT and BPDT (QLEDs) 12 2.6. QLED Device Fabrication 13 2.6.1. Chemical and Materials 13 2.6.2. QLED Fabrication 14 CHAPTER 3. CHARACTERIZATION 15 3.1. Instrumentation 15 CHAPTER 4. RESULT AND DISCUSSION 17 4.1. Direct Photo-Crosslinking Patterning for High-Performance 0D-2D Hybrid Photodetectors 17 4.1.1. Optical Properties and Chemical Analyses of CdSe/CdZnS-TBBT films 17 4.1.2. Direct Photo-Crosslinking Patterning of CdSe/CdZnS using TBBT 23 4.1.3. Carrier Transfer Mechanism of Hybrid Structure 25 4.1.4. 0D-2D Hybrid Photodetector Performance of CdSe/CdZnS-TBBT/MoS2 29 4.1.5. Summary 34 4.2. Role of Conjugated Structure of Crosslinkers in Direct Photo-Crosslinking Patterning of Colloidal Nanocrystals for QLED Performance Enhancement. 35 4.2.1. The Role of Conjugated Structure of Crosslinkers in the Patterning of NCs 35 4.2.2. Solvent Resistance of Quantum Dot Films and Chemical Bonding Analysis of Thiol-ene Reaction 38 4.2.3. CdZnSe/ZnS/CdZnS Pattern Formation and Optical Properties after Patterning Process 42 4.2.4. QLED Performance with Crosslinked CdZnSe/ZnS/CdZnS 47 4.2.5. Summary 50 CHAPTER 5. CONCLUSION 51 References 53 요 약 문 60
