BiSI Micro-Rod Thin Films: Efficient Solar Absorber Electrodes?
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- 作者：Nathan T. Hahn ; Jeffrey L. Self ; C. Buddie Mullins
- 刊名：The Journal of Physical Chemistry Letters
- 出版年：2012
- 出版时间：June 7, 2012
- 年：2012
- 卷：3
- 期：11
- 页码：1571-1576
- 全文大小：389K
- 年卷期：v.3,no.11(June 7, 2012)
- ISSN：1948-7185
文摘
The development of improved solar energy conversion materials is critical to the growth of a sustainable energy infrastructure in the coming years. We report the deposition of polycrystalline BiSI thin films exhibiting promising photoelectrochemical properties on both metal foils and fluorine-doped tin-oxide-coated glass slides using a single-source chemical spray pyrolysis technique. Their strong light absorption in the visible range and well-crystallized layered structure give rise to their excellent photoelectrochemical performance through improved electron鈥揾ole generation and separation. The structure and surface composition of the films are dependent on deposition temperature, resulting in dramatic differences in performance over the temperature range studied. These results reveal the potential of n-BiSI as an alternative thin film solar energy conversion material and may stimulate further investigation into V鈥揤I鈥揤II compounds for these applications.