Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/121756
Title: SURFACE ENGINEERED ONE DIMENSIONAL AND TWO DIMENSIONAL NANOMATERIALS FOR ELECTRONIC AND OPTOELECTRONIC DEVICES
Authors: XIANG DU
Keywords: surface functionalization, surface transfer doping, H2 annealing, two-dimensional, quasi-one-dimensional, electronic and optoelectronic devices
Issue Date: 20-Aug-2015
Source: XIANG DU (2015-08-20). SURFACE ENGINEERED ONE DIMENSIONAL AND TWO DIMENSIONAL NANOMATERIALS FOR ELECTRONIC AND OPTOELECTRONIC DEVICES. ScholarBank@NUS Repository.
Abstract: As the sizes of individual components in electronic and optoelectronic devices approach nano scale, the performance of the devices is often determined by surface properties due to their large surface-to-volume ratio. Surface functionalization has become one of the cornerstones in nanoelectronic industry. In this thesis, I will introduce two effective surface functionalization approaches, namely, surface transfer doping and H2 annealing, to significantly enhance the performance of two-dimensional and quasi-one-dimensional nanomaterials based functional devices, respectively. Through surface transfer doping technique, the ambipolar characteristics of black phosphorus based field effect transistors were effectively tuned. Moreover, a remarkable performance enhancement of graphene/Si Schottky junction based self-powered photodetector was observed via surface transfer doping of MoO3. In contrast, through H2 annealing, a high-performance photodetector with wide visible spectrum response fabricated by gap states assisted quasi-one-dimensional MoO3 nanobelt was successfully achieved.
URI: http://scholarbank.nus.edu.sg/handle/10635/121756
Appears in Collections:Ph.D Theses (Open)

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