Competing Photocurrent Mechanisms in Quasi-Metallic Carbon Nanotube pn Devices

被引：13
作者：
Amer, Moh. R. [1 ,2 ]
Chang, Shun-Wen [3 ]
Cronin, Stephen B. [3 ,4 ,5 ]
机构：
[1] Univ Calif Los Angeles, Ctr Excellence Green Nanotechnol, Los Angeles, CA 90095 USA
[2] King Abdulaziz City Sci & Technol, Riyadh, Saudi Arabia
[3] Univ So Calif, Dept Phys & Astron, Los Angeles, CA 90089 USA
[4] Univ So Calif, Dept Elect Engn, Los Angeles, CA 90089 USA
[5] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA
来源：
SMALL | 2015年 / 11卷 / 26期
关键词：
bandgaps; carrier generation rates; photocurrents; photothermoelectric effect; thermoelectric power; carbon nanotubes; BAND-GAPS; GENERATION;
D O I：
10.1002/smll.201403413
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Photodetectors based on quasi-metallic carbon nanotubes exhibit unique optoelectronic properties. Due to their small bandgap, photocurrent generation is possible at room temperature. The origin of this photocurrent is investigated to determine the underlying mechanism, which can be photothermoelectric effect or photovoltaic effect, depending on the bandgap magnitude of the quasi-metallic nanotube. © 2015 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码：3119 / 3123
页数：5
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