2017年3月31日
Investigation of Photoexcited Carrier Dynamics in Hematite and the Effect of Surface Modifications by an Advanced Transient Grating Technique
ACS Omega
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- 巻
- 2
- 号
- 3
- 開始ページ
- 1031
- 終了ページ
- 1035
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/acsomega.7b00021
- 出版者・発行元
- American Chemical Society
Photoexcited carrier dynamics in a hematite film with and without amorphous NiFeOx on the surface was investigated using the heterodyne transient grating method. We found that two different electron/hole dynamics took place in the micro- and millisecond time regions and successfully assigned each component to the decay processes of electrons and holes trapped at surface states, respectively. It was also demonstrated that the amorphous NiFeOx coating plays a crucial role in increasing the survival of the holes at the surface trap states, which was caused by the decrease in the surface recombination rate.
- ID情報
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- DOI : 10.1021/acsomega.7b00021
- ISSN : 2470-1343
- SCOPUS ID : 85028911905