Gallium-Doped Tin Oxide Nano-Cuboids for Improved Dye Sensitized Solar Cell

Gallium-Doped Tin Oxide Nano-Cuboids for Improved Dye Sensitized Solar Cell

Tin dioxide (SnO2) is a potential candidate to replace conventional titanium dioxide (TiO2) in dye-sensitized solar cells (DSSCs) because of its wider bandgap and higher electron mobility. However, SnO2 suffers from low band edge that causes severe backflow of electrons towards electrolyte (charge r...

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Bibliographic Details
Main Authors: Teh, Jun Jie, Ting, Siong Luong, Leong, Kam Chew, Li, Jun, Chen, Peng
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2016
Subjects:
dye sensitized solar cell; tin oxide; gallium doping; nano-cuboid; band edge; charge recombination
Online Access:https://hdl.handle.net/10356/82056
http://hdl.handle.net/10220/39752
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Institution: Nanyang Technological University
Language: English
Description
Summary:Tin dioxide (SnO2) is a potential candidate to replace conventional titanium dioxide (TiO2) in dye-sensitized solar cells (DSSCs) because of its wider bandgap and higher electron mobility. However, SnO2 suffers from low band edge that causes severe backflow of electrons towards electrolyte (charge recombination). Herein, we demonstrate that gallium (Ga) doping can increase the band edge of SnO2, and we show that DSSCs using a Ga-doped SnO2 nano-cuboids based photoanode offer improved open circuit potential (∼0.74 V), fill factor (∼73.7%), and power conversion efficiency (∼4.05%).

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