Enhancing Optical Properties of Cesium Lead Halide Perovskite Nanocrystals Using Ligand Exchange Treatment
- Title
- Enhancing Optical Properties of Cesium Lead Halide Perovskite Nanocrystals Using Ligand Exchange Treatment
- Alternative Title
- 리간드 교환 처리에 따른 세슘 납 할라이드 페로브스카이트 나노결정의 광학적 성질 향상
- Author(s)
- Sung Nak Jun
- DGIST Authors
- Sung Nak Jun ; Jiwoong Yang ; Moon Kee Choi
- Advisor
- 양지웅
- Co-Advisor(s)
- Moon Kee Choi
- Issued Date
- 2022
- Awarded Date
- 2022/02
- Type
- Thesis
- Subject
- Perovskite, Perovskite nanocrystals, Quantum dots, Optoelectronic materials, Light-emitting diode
- Description
- Perovskite, Perovskite nanocrystals, Quantum dots, Optoelectronic materials, Light-emitting diode
- Table Of Contents
-
Ⅰ. Introduction 1
Ⅱ. Experimental Section and Characterization 5
2.1 Materials 5
2.2 Synthesis of CsPbX3 5
2.2.1 Synthesis of green PeNCs 5
2.2.2 Synthesis of red PeNCs 6
2.3 Ligand Exchange Treatment 6
2.4 Materials characterization 7
Ⅲ. Results and Discussion 8
3.1 Green PeNCs ligand exchange (only DDAB & OA+DDAB) 8
3.2 Red PeNCs ligand exchange (pre-DDAB & post-DDAB) 11
3.3 Blue PeNCs ligand exchange (mixed halide & DDAC) 16
3.4 Characterization of optical properties 18
3.4.1 UV-Vis-NIR Spectrophotometer and Photoluminescence Spectroscopy 18
3.4.2 Red, green, blue PeNCs of UV radiation photograph 19
3.4.3 Comparison of PLQY of after Ligand Exchange Characterization 20
3.5 Characterization of structure properties 21
3.5.1 Red, green, blue PeNCs of TEM image 21
3.5.2 Red, green, blue PeNCs of size distribution plot 21
3.5.3 HRTEM image and FFT Characterization 22
3.5.4 XRD Characterization 23
3.6 Characterization of composition 24
3.6.1 FT-IR Characterization of ligand exchanged red, green blue PeNCs 24
3.6.2 FT-IR Characterization of ligand exchanged ratio of pristine green PeNCs 24
3.6.3 FT-IR Characterization of ligand exchanged red, blue PeNCs 25
3.6.4 Comparison of XPS spectra of after ligand exchange characterization 26
Ⅳ. Conclusion 28
Reference 29
요약문 33
- URI
-
http://dgist.dcollection.net/common/orgView/200000595010
http://hdl.handle.net/20.500.11750/16279
- Degree
- Master
- Department
- Energy Science & Engineering
- Publisher
- DGIST
- Related Researcher
-
-
Yang, Jiwoong
- Research Interests Quantum Dots; Nanocrystals; Displays; Solar Energy; TEM; Photocatalyst
-
- Files in This Item:
-
There are no files associated with this item.
- Appears in Collections:
- Department of Energy Science and Engineering Theses Master
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