Bibliographic Details
| Title: |
Pulsed laser deposition of BiCuOSe thin films. |
| Authors: |
Zakutayev, A.1, Newhouse, P.1, Kykyneshi, R.1, Hersh, P.2, Keszler, D.2, Tate, J.1 tate@physics.oregonstate.edu |
| Superior Title: |
Applied Physics A: Materials Science & Processing. Feb2011, Vol. 102 Issue 2, p485-492. 8p. |
| Subject Terms: |
*PULSED laser deposition, *BISMUTH compounds, *THIN films, *DOPED semiconductors, *MOLECULAR structure, *SILICA, *SUBSTRATES (Materials science) |
| Abstract: |
Undoped and 10% Ca-doped BiCuOSe thin films are prepared by pulsed laser deposition without ex-situ processing. The influence of the preparation conditions on structure and properties of BiCaCuOSe thin films on amorphous silica substrates is studied. The highest achieved concentration and mobility of free holes (3.9×10 cm and 3.5 cm/Vs) was close to that measured in strongly c-axis oriented samples on SrTiO substrates (4.0×10 cm and 7.5 cm/Vs). The BiCaCuOSe films on SrTiO show almost temperature-independent Seebeck coefficient and their resistivity increases with increasing temperature. The Seebeck coefficient of undoped BiCuOSe films on SrTiO increases below 150°K, and the resistivity shows a flat plateau centered at this temperature. Optical measurements suggest that BiCuOSe has an indirect bandgap of 0.8 eV and a strong absorption edge at 1.45 eV. Ab-initio calculations of the electronic band structure, effective masses and optical properties of BiCuOSe are also presented. [ABSTRACT FROM AUTHOR] |
|
Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| Database: |
Academic Search Premier |