期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 2, 期 14, 页码 1777-1781出版社
AMER CHEMICAL SOC
DOI: 10.1021/jz200809c
关键词
-
类别
资金
- National Science Foundation [CHE-0809045]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001011]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [0809045] Funding Source: National Science Foundation
Pump-probe transient absorption microscopy was used to follow the electron-hole (e-h) recombination dynamics at different points within individual needle-shaped ZnO-rods to characterize spatial differences in dynamical behavior. The results from pump-probe experiments are correlated with spatially resolved ultrafast emission measurements, and scanning electron microscopy provides structural details. Dramatically different e-h recombination dynamics are observed in the narrow tips compared to the interior, with the ends exhibiting a greater propensity for electron-hole plasma (EHP) formation and faster recombination of carriers across the band gap that stem from a physical confinement of the charge carriers. In the interior of the rod, a greater fraction of the e-h recombination is trap-mediated and occurs on a significantly longer time scale.
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