Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/227557
Title: QUANTUM RODS AND THEIR FUNCTIONAL FILMS FOR DISPLAY
Authors: ZHOU ZIMING
ORCID iD:   orcid.org/0000-0002-7287-2129
Keywords: Quantum Rods, Enhancement Films, Alignment, Linear Polarization, Circular Polarization, Electroluminescent Light Emitting Diodes
Issue Date: 6-Dec-2021
Citation: ZHOU ZIMING (2021-12-06). QUANTUM RODS AND THEIR FUNCTIONAL FILMS FOR DISPLAY. ScholarBank@NUS Repository.
Abstract: Presently, liquid crystal display (LCD) and organic light emitting diode (OLED) are two popular display technologies. However, LCD technology has small color gamut and low power conversion efficiency, and OLEDs cannot achieve wide color gamut and are suffering color shifting and cannot achieve wide color gamut display, because emission is not narrow enough and intrinsic organic materials are unstable. Semiconductor quantum dots (QDs) are nanomaterials with high absolute quantum yield (QY) and has size dependent optical properties and narrow emission as well as they can achieve wide color gamut display. As a variant of QDs, quantum rods (QRs) reserve all these advantages, and have polarized emission and suffer less reabsorption of light. Therefore, QRs are brought into focus and applied in display techniques to achieve polarized display, high power conversion efficiency and wide color gamut. In this thesis, detailed investigations on the synthesis, display applications of QR materials are carried out. Firstly, CdSe/CdS dot-in-rod QRs with high absolute photoluminescent QY and accurate controllable morphology are synthesized. Secondly, the synthesized QRs are aligned to fabricate QR enhancement films with high degree of linearly polarized emission, which can improve efficiency and color gamut of LCD technique. Thirdly, the chiral transferred QRs are dopped into self-assembled chiral supramolecular system to fabricate circularly polarized luminescent films. Finally, the synthesized QRs are used as emissive layer of OLEDs and achieve wider color gamut and high external quantum efficiency. This research work shows that QRs are promising candidates for display applications.
URI: https://scholarbank.nus.edu.sg/handle/10635/227557
Appears in Collections:Ph.D Theses (Open)

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