Title

Influence of Surface Ligands on the Performance of HgTe Quantum Dots-Based Photodetectors

Alternative Title

표면 리간드에 따른 수은 텔루륨 양자점 기반 광검출기 성능 변화

DGIST Authors

Jihoo So ; Jong-Soo Lee ; Hyun-Soo Ra

Advisor

이종수

Co-Advisor(s)

Hyun-Soo Ra

Issued Date

2026

Awarded Date

2026-02-01

Type

Thesis

Description

Quantum-Dots, Mercury Telluride, Photodetectors, Short-Wave-Infrared, Ligands, Photodiode

Table Of Contents

Ⅰ. Introduction 1

Ⅱ. Background 4
2.1 Quantum Dots (QDs) 4
2.1.1 Quantum Confinement Effect 4
2.1.2 Structure of QDs 5
2.1.3 Short-Wavelength-Infrared (SWIR) QDs 8
2.1.4 Ligand Engineering 9
2.2 Carrier Transport in QD Films 11
2.2.1 Hopping 11
2.2.2 Trap Assisted Transport 13
2.2.3 Band-like Transport 14
2.3 Photodetectors 15
2.3.1 Photoconductor 16
2.3.2 Phototransistor 17
2.3.3 Photodiode 18

Ⅲ. Experiment 24
3.1 Materials 24
3.2 HgTe QDs 24
3.3 Ligands 26
3.4 Zinc Oxide Sol-Gel Solution 27
3.5 Photodiode Fabrication 27

Ⅳ. Results 29
4.1 Photodide Performance 29
4.2 Film Characteristic 34
4.3 Device Characteristic 37
4.4 Stability 41

Ⅴ. Conclusion 43

Reference 44

URI

https://scholar.dgist.ac.kr/handle/20.500.11750/59684
http://dgist.dcollection.net/common/orgView/200000942231

DOI

10.22677/THESIS.200000942231

Degree

Master

Department

Department of Energy Science and Engineering

Publisher

DGIST

Show Full Item Record