Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/48609
Title: Layered chalcogenides nanostructures: synthesis, characterization and optoelectrical applications
Authors: BABLU MUKHERJEE
Keywords: Nanostructures, Nanobelt properties, GeSe2, Germanium selenide, Layered chalcogenides, Electrical properties, Optoelectrical applications
Issue Date: 7-Aug-2013
Source: BABLU MUKHERJEE (2013-08-07). Layered chalcogenides nanostructures: synthesis, characterization and optoelectrical applications. ScholarBank@NUS Repository.
Abstract: The main objective of this thesis is to study various morphological growth and optoelectrical properties of individual Ge based layered chalcogenides nanostructures. This thesis essentially summarizes the synthesis of GeSe2 and GeSe nanostructures, as well as investigations on their electrical properties for photodetector applications. Photodetectors comprising of individually isolated GeSe2 nanobelts with different surface morphologies were fabricated to study their photodetection properties. The photoresponsivity of the devices were investigated at different excitation wavelengths. High-gain photoresponse of the single NB devices with the possible electronic conduction and photoconducting mechanism was illustrated. Furthermore, the thesis includes the controlled structural changes, which was investigated on micropatters created on GeSe2 nanostructures film using Raman spectroscopy. In addition, the electrical conductivity and near infrared (NIR) photosensing properties of individual GeSe nanosheet devices were investigated for promising potential application in future nanoelectronics applications.
URI: http://scholarbank.nus.edu.sg/handle/10635/48609
Appears in Collections:Ph.D Theses (Open)

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