| 查看: 1227 | 回复: 15 | ||
| 【奖励】 本帖被评价11次，作者sipei增加金币 9 个 | ||
| 当前主题已经存档。 | ||
[资源]
JAP上 ZnO 的表面态与发光的光谱性质的关系的最新综述
|
||
|
Surface-state related luminescence in ZnO nanocrystals Johannes Fallert,a Robert Hauschild, Felix Stelzl, Alex Urban, Markus Wissinger, Huijuan Zhou, Claus Klingshirn, and Heinz Kalt Institut für Angewandte Physik, Universität Karlsruhe (TH), Wolfgang-Gaede-Strasse 1, 76131 Karlsruhe, Germany Received 7 December 2006; accepted 14 February 2007; published online 4 April 2007 We investigate the optical properties of four different samples of ZnO nanocrystals, with a particle size average varying from 70 up to 380 nm. The photoluminescence PL of all samples shows at low temperature an emission band around 3.31 eV, which is several orders of magnitude stronger compared to the PL of bulk ZnO at this energy. This band shows a clear dependence on the surface to volume ratio of the nanocrystals and is therefore assigned to surface states. Temperature dependent measurements reveal that this band plays a major role up to room temperature for all examined ZnO powders. Additionally, intensity dependent measurements display that the origin of this emission band can be assigned to bound exciton complexes BECs. Compared to the well known shallow BECs the measured lifetimes of these relatively strong bound excitons states are much longer. © 2007 American Institute of Physics. DOI: 10.1063/1.2718290 大家赶紧下吧！ [ Last edited by popsheng on 2007-7-11 at 09:23 ] |
回复此楼» 猜你喜欢
南京晓庄学院绿色能源材料团队招生
已经有0人回复
-
北方工业大学储能技术-02电化学储能与氢能方向招收2026级二次调剂学生
已经有0人回复
-
金属材料论文润色/翻译怎么收费?
已经有111人回复
-
求助WO3.cif文件 对应PDF卡片 43-1035，单斜晶系 , P21/n 。
已经有2人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有8人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有10人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有6人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有0人回复
-
稀土发光分析｜核壳结构｜寿命拟合
已经有0人回复
-
26 届青岛大学纺织化学与染整工程硕士（液体纳米分散染料方向）求申博建议
已经有1人回复
-
26 届青岛大学纺织化学与染整工程（液体纳米分散染料）求浙理工纺织 / 材料博导名额
已经有0人回复
2楼2007-07-08 11:12:27
3楼2007-07-08 12:10:00
xialaikankan 4楼2007-07-09 09:40:16
5楼2007-07-09 20:16:09
6楼2007-07-09 21:31:37
7楼2007-07-13 08:18:11
8楼2007-07-20 17:45:13
9楼2007-07-20 18:08:10
10楼2007-07-21 07:32:07
11楼2007-07-22 10:36:15
