期刊
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
卷 246, 期 9, 页码 1973-1995出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.200945128
关键词
-
资金
- US. Department of Energy [DE-AC52-06NA25396]
Semiconductor nanowires (NWs) are nanostructures with a number of novel optical and electronic properties that offer great promise for applications in areas including nanoelectronics, thermoelectrics sensing and nanophotonics. To realize the full potential of these unique nanosystems, however, a deep understanding of their response to optical excitation on a sub-picosecond time scale is required. Here we review recent ultrafast optical studies of carrier dynamics in semiconductor NWs. These experiments have been performed on different materials as a function of both intrinsic NW parameters such as diameter and doping as well as experimental parameters including photoexcited carrier density and wavelength. A variety of phenomena, including one-dimensional (1D) exciton dynamics, rapid carrier trapping at surface and bulk defects, and lasing from an electron-hole plasma (EHP) have been observed. These first measurements of ultrafast carrier dynamics are a tantalizing hint of the rich physics yet to be discovered in these quasi-1D systems. [GRAPHICS] Ultrafast optical spectroscopy can track the temporal evolution of carrier populations in semiconductor NWs with femtosecond time resolution. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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