액정 산란체를 이용한 제어 가능한 양자점 색변환 셔터 = Controllable Quantum Dot Color Conversion Shutter via Liquid Crystal Scatterers

다국어 초록 (Multilingual Abstract)

Optical shutters can control the transmittance of light by applying external energy. Polymer dispersed liquid crystals (PDLCs), liquid crystal/polymer composite is a common way to. manufacture optical shutters. These are widely utilized for smart windows for energy conservation or privacy safeguarding owing to their selective switching between transparent and opaque state. However, extended functionalities for optical shutters such as color-tunability or blocking specific wavelengths of light have not been actively discussed. In this thesis, we suggested a Quantum dots (QDs)-PDLC that can modulate color for optical shutters which can control the output intensity of photoluminescence (PL) by applying an electric field. We fabricated QD-PDLC film by polymerization-induced phase separation (PIPS) using UV-initiated radical polymerization. The results clearly showcase color-controllable QD-PDLC film that can effectively control the output intensity of PL in visible wavelength, and also show clear switching between transparent and opaque state, which is the essential role of conventional optical shutters. We believe that this result proposes a new approach for adding functionality of optical shutters.

목차 (Table of Contents)

• Chapter 1. Introduction 1
• Chapter 2. Theoretical Background 10
• Chapter 3. Experimental Section 21
• Chapter 4. Results and Discussion 31
• Chapter 5. Conclusion 51
• Chapter 6. Bibliography 53
• Chapter 7. Publications 55