Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/48341
Title: Development of Quantum Dot Sensitized Solar Cells with Reduced Fabrication Cost and Enhanced Conversion Efficiency
Authors: YANG SHENGYUAN
Keywords: Solar Cells, Quantum Dot, Sensitization, Titanium Dioxide, Electrospinning, Dipole Treatment
Issue Date: 24-Aug-2012
Source: YANG SHENGYUAN (2012-08-24). Development of Quantum Dot Sensitized Solar Cells with Reduced Fabrication Cost and Enhanced Conversion Efficiency. ScholarBank@NUS Repository.
Abstract: Solar energy as a renewable energy source has become a public consensus as current fossil reserves are running out fast. Whilst in continuous pursuit of high efficiency solar cells, less efficient ones that can deliver significantly lower cost per kilowatt-hour should not be ignored. In this thesis, we outline the fabrication of low-cost quantum dot-sensitized solar cells (QDSCs) utilizing one-dimensional (1-D) electrospun nanostructures. From the very beginning of a minimum efficiency prototype fabricated by bi-functional molecular linker method, QDSCs with increasing efficiency were developed in phase through: 1) synthesis of novel rice grain-shaped TiO2 mesostructures by electrospinning; 2) efficient QDs deposition onto TiO2 by successive ionic layer adsorption and reaction (SILAR); 3) cobalt sulfide?s substitution of platinum as counter electrode to assemble all-SILAR based QDSCs. With further surface dipole treatment to engineer the band alignment between QDs and TiO2, QDSCs with greatly enhanced power conversion efficiency were successfully fabricated by single CdS sensitization without any elaborate procedures which provides a promising mass production and deployment way for alternative low-cost solar cells.
URI: http://scholarbank.nus.edu.sg/handle/10635/48341
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
YangSY.pdf5.94 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

121
checked on Dec 11, 2017

Download(s)

460
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.