Influence of surface disorder, oxygen defects and bandgap in TiO2 nanostructures on the photovoltaic properties of dye sensitized solar cells
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- 作者：Tapan Kumar Dasa ; P. Ilaiyarajaa ; Pavana S.V. Mocherlaa ; G.M. Bhaleraob ; C. Sudakara ; csudakar@iitm.ac.in" class="auth_mail" title="E-mail the corresponding author
- 关键词：TiO2 nanostructures ; Kubelka&ndash ; Munk function ; Diffuse reflection spectroscopy ; Oxygen vacancies ; Bandgap ; DSSC ; photovoltaic properties
- 刊名：Solar Energy Materials and Solar Cells
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：144
- 期：Complete
- 页码：194-209
- 全文大小：6164 K
文摘
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Oxygen deficiency red-shifts the bandgap by ~0.25 eV in TiO2 nanostructures.
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Hydrogenation facilitates efficient electron generation and transport in TiO2.
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Oxygen vacancy states shorten the carrier lifetime in DSSCs.
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Efficiencies up to 7% are shown in DSSCs of diverse TiO2 nanostructures.
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DSSCs of hydrogenated nanostructures are less efficient by 2–4 times.