Non-linear electric field response of permittivity of atomically smooth TiO₂ (rutile) single crystals studied by an electrochemical approach
-
- TAKATA Shintaro
- Materials and Structures Laboratory, Tokyo Institute of Technology
-
- HACHIYA Atsushi
- Materials and Structures Laboratory, Tokyo Institute of Technology
-
- MATSUMOTO Yuji
- Materials and Structures Laboratory, Tokyo Institute of Technology
書誌事項
- タイトル別名
-
- Non-linear electric field response of permittivity of atomically smooth TiO<sub>2</sub>(rutile) single crystals studied by an electrochemical approach
この論文をさがす
抄録
Electric field-dependent permittivity of n-TiO2 (rutile) along different crystallographic axes was investigated by an electrochemical impedance spectroscopy (EIS) measurement. The C−2 versus U plots were fitted with a quadratic function of U, derived from a model that adds the effects of electric field dependent permittivity to the conventional Mott–Schottky equation. Only when atomically flat n-TiO2 single crystal electrodes were used, could the intrinsic behavior of the electric field dependent permittivity be observed. The principal components of permittivity in the ab-plane exhibited a weak electric field dependence, while a strong electric field dependence was confirmed along the c-axis direction. By taking the electric field dependent permittivity into account, we were able to evaluate accurately the flat-band potential and the donor density. Different photocurrent behavior between (110), (100), and (001) electrodes is discussed in terms of the electric field strength at the surface and the depletion layer width within TiO2.
収録刊行物
-
- Journal of the Ceramic Society of Japan
-
Journal of the Ceramic Society of Japan 120 (1405), 366-369, 2012
公益社団法人 日本セラミックス協会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390001205287275520
-
- NII論文ID
- 130004480095
- 40019396475
-
- NII書誌ID
- AA12229489
-
- ISSN
- 13486535
- 18820743
-
- NDL書誌ID
- 023909671
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可