Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/118432
Title: SYNTHESIS AND CHARACTERIZATION OF ANISOTROPIC SEMICONDUCTOR NANOCRYSTALS OF MIXED DIMENSIONALITY
Authors: WU WENYA
Keywords: Anisotropic, Semiconductor, Colloidal Nanocrystals, heterostructure, 2 Dimensional, Nanosheet,
Issue Date: 21-Aug-2014
Citation: WU WENYA (2014-08-21). SYNTHESIS AND CHARACTERIZATION OF ANISOTROPIC SEMICONDUCTOR NANOCRYSTALS OF MIXED DIMENSIONALITY. ScholarBank@NUS Repository.
Abstract: WE DEVELOPED NOVEL SYNTHETIC APPROACHES FOR ACHIEVING BRANCHED NANOHETEROSTRUCTURES COMPRISING OF A 0D CORE WITH 1D ARMS, AS WELL AS 2D NANOPLATES WITH HIGHLY ANISOTROPIC LATERAL DIMENSIONS. GROWTH MECHANISMS WERE INVESTIGATED VIA A COMPREHENSIVE VARIETY OF CHARACTERIZATION TECHNIQUES WITH RESPECT TO THESE MIXED DIMENSIONAL NANOSTRUCTURES, WHILE THEIR OPTICAL AND ELECTRONIC BEHAVIORS HAVE BEEN DEMONSTRATED AS WELL. WE HAVE ACHIEVED TYPE-II INP/ZNS SEEDED CDS TETRAPOD-SHAPED NANOHETEROSTRUCTURES WITH EFFICIENT DUAL EMISSION, HIGH PHOTOSTABILITY, AND WIDE RANGE OF COLOR TUNABILITY FROM RED TO WHITE TO BLUE. UNDER FURTHER SEQUENTIALLY CATION EXCHANGE REACTION THESE TYPE-II TETRAPOD COULD BE CHEMICALLY TRANSFORMED TO TYPE-I INP/ZNS SEEDED ZNS TETRAPOD WITH WURTZITE ZNS ARMS AND RECOVER OF GREEN EMISSION FROM INP/ZNS CORE. MOVING FROM 3D NANOHETEROSTRUCTURES TO 2D NANOPLATES, WE HAVE EXPLORED THE NOVEL SYNTHETIC APPROACHES ASSISTED BY HALIDE IONS (CL- AND BR-) FOR ACHIEVING FREE STANDING 2
URI: http://scholarbank.nus.edu.sg/handle/10635/118432
Appears in Collections:Ph.D Theses (Open)

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