JaLCDOI 10.18926/fest/19742
フルテキストURL 004_147_158.pdf
著者 陳 丹平| 渡辺 智大| 三浦 嘉也| 難波 徳郎|
抄録 Photo-induced phenomena such as photoconductive and photovoltaic effects were investigated for the glasses in CdO-Bi(2)O(3)-Al(2)O(3) system. Photoconductive effect was characterized by a slow decay of photocurrent (persitent photoconductivity). The decay rate decreased with increasing CdO content and decreasing Bi(2)O(3) content. Photovoltage was very small at room temperature but increased to an obvious value on heating. The photoconductivity and photovoltage were increased with CdO content and enhanced by heat treatment in air. The valence band spectra of X-ray photoelectron spectroscopy showed that the hybridization of Cd 4d and O 2p orbitals increases with decreasing Bi(2)O(3) content and increasing CdO content in the glasses. As the results maximum tends to flat. This type of band structure inhibits the rapid recombination of electrons and holes. The persistent photoconductivity of the glasses may be attributed to deep energy level of DX centers. Deep energy levels of the glasses are able to prevent the recombination because they have a repulsive barrier for both electron emission and capture.
キーワード Photoconductivity Photovoltage Persistent photoconductivity CdO-Bi(2)O(3)-Al(2)O(3) glasses Electronic state
出版物タイトル 岡山大学環境理工学部研究報告
発行日 1999-02-26
4巻
1号
開始ページ 147
終了ページ 158
ISSN 1341-9099
言語 English
論文のバージョン publisher
NAID 120002309190