期刊
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
卷 42, 期 6, 页码 1838-1843出版社
ELSEVIER
DOI: 10.1016/j.physe.2010.02.005
关键词
ZnO; PLD; Thin film; TCO
资金
- DAE-BRNS
Transparent conductive dysprosium doped ZnO (Dy:ZnO) thin films with preferential orientation in the (0 0 0 2) direction were deposited on (0 0 0 1) sapphire substrate by buffer assisted pulsed laser deposition. The experimental results show that the resistivity of Dy:ZnO thin films decreased to a minimum value of similar to 7.6 x 10(-4) Omega cm with increasing Dy concentration up to similar to 0.45 at%, then increased with the further increase of Dy concentration. On the contrary, the band gap and carrier concentration of Dy:ZnO thin films initially increased, then decreased with increase of Dy concentration. The blue shift of band gap of Dy:ZnO thin films with increasing carrier concentration was attributed to the competing effects of Burstein-Moss shift and band gap narrowing. A bright room temperature photoluminescence observed at similar to 575 nm in all the Dy:ZnO thin films, with maximum intensity at similar to 0.45 at% of Dy doping, was attributed to be due to intra-band transitions of Dy3+ in ZnO. Near band edge photoluminescence of ZnO was observed at similar to 380 nm with photoluminescence intensity decreasing with increase of Dy concentration. Such Dy:ZnO thin films are found to be suitable candidate for luminescent device applications. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据