Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/34385
Title: Processing and applications of carbon nanotubes and graphene
Authors: MEI XIAOGUANG
Keywords: carbon nanotube, graphene, thin film, gel, solar cell, processing
Issue Date: 18-Aug-2011
Source: MEI XIAOGUANG (2011-08-18). Processing and applications of carbon nanotubes and graphene. ScholarBank@NUS Repository.
Abstract: Carbon nanotubes (CNTs) and graphene have been considered as building blocks of the next generation electronic devices due to their extraordinary electrical properties. However, their practical applications have been severely impeded by lack of effective processing techniques. This thesis demonstrates a novel gel phase processing of CNTs. The CNT composite gels were prepared by mechanically mixing CNTs with liquid non-ionic surfactants. CNT films with variable thickness were prepared by gel coating and subsequently heat treatment. These CNT films can be used either as transparent electrode of optoelectronic devices or counter electrode of high-performance dye-sensitized solar cells. This thesis also reveals an ultrafast and green method to process graphene by reducing graphene oxide with Zn powder under ultrasonication. The reduction completes within 1 min, and the reduced graphene can have a conductivity of 15000 S/m. The application of the reduced graphene oxide as conductive and transparent electrode was demonstrated.
URI: http://scholarbank.nus.edu.sg/handle/10635/34385
Appears in Collections:Ph.D Theses (Open)

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