Novel Room Temperature Stable Electride 12SrO 7Al2O3 Thin Films: Fabrication, Optical and Electron Transport Properties
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- MIYAKAWA Masashi
- Frontier Collaborative Research Center, Tokyo Institute of Technology
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- UEDA Naoto
- Materials and Structures Laboratory, Tokyo Institute of Technology
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- KAMIYA Toshio
- Materials and Structures Laboratory, Tokyo Institute of Technology
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- HIRANO Masahiro
- Frontier Collaborative Research Center, Tokyo Institute of Technology
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- HOSONO Hideo
- Frontier Collaborative Research Center, Tokyo Institute of Technology Materials and Structures Laboratory, Tokyo Institute of Technology
Bibliographic Information
- Other Title
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- Express letter: Novel room temperature stable electride 12SrO・7Al2O3 thin films: fabrication, optical and electron transport properties
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Abstract
12SrO•7Al2O3 (S12A7) is a meta-stable phase in the system of SrO-Al2O3 and has the isostructure with 12CaO•7Al2O3 (C12A7), which is composed of sub-nanometer-sized cages with oxygen ions loosely encaged in the cages. This letter reports fabrication of polycrystalline thin films of insulating and metallic S12A7 electride thin films. The as-crystallized film was an electrical insulator, while light-induced persistent electronic conduction with a conductivity of~1×10-3 S•cm-1 at 300 K was realized in proton-implanted films. Higher conductivities of~270 S•cm-1 were attained in the films subjected to a reduction treatment using an oxygen deficient amorphous film deposition. These behaviors are similar to those observed on C12A7. The present results suggest that S12A7 is another candidate material to explore electronic functions originating from a nanoporous structure embedded in a crystal structure.<br>
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 115 (1345), 567-570, 2007
The Ceramic Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282680259329152
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- NII Article ID
- 110006380233
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- NII Book ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL BIB ID
- 8885696
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed