气候变化领域集成服务门户(CCPortal): Extremely efficient multiple electron-hole pair generation in carbon nanotube photodiodes

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DOI	10.1126/science.1176112
	Extremely efficient multiple electron-hole pair generation in carbon nanotube photodiodes
	Gabor N.M.; Zhong Z.; Bosnick K.; Park J.; McEuen P.L.
发表日期	2009
ISSN	0036-8075
起始页码	1367
结束页码	1371
卷号	325 期号:5946
英文摘要	We observed highly efficient generation of electron-hole pairs due to impact excitation in single-walled carbon nanotube p-n junction photodiodes. Optical excitation into the second electronic subband E22 leads to striking photocurrent steps in the device I-VSD characteristics that occur at voltage intervals of the band-gap energy EGAP/e. Spatially and spectrally resolved photocurrent combined with temperature-dependent studies suggest that these steps result from efficient generation of multiple electron-hole pairs from a single hot E22 carrier. This process is both of fundamental interest and relevant for applications in future ultra-efficient photovoltaic devices.
英文关键词	single walled nanotube; electronic equipment; nanotechnology; optical method; photovoltaic system; temperature effect; article; controlled study; electric current; electric potential; electron; electron transport; energy yield; light emitting diode; molecular interaction; nanofabrication; priority journal; productivity; temperature dependence; Electricity; Electrons; Nanotechnology; Nanotubes, Carbon; Optics and Photonics; Photons; Temperature
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243761
作者单位	Laboratory of Atomic and Solid-State Physics, Cornell University, Ithaca, NY 14853, United States; Center for Nanoscale Systems, Cornell University, Ithaca, NY 14853, United States; Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, United States; National Institute for Nanotechnology, National Research Council of Canada, Edmonton, AB T6G 2M9, Canada; Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48109, United States
推荐引用方式 GB/T 7714	Gabor N.M.,Zhong Z.,Bosnick K.,et al. Extremely efficient multiple electron-hole pair generation in carbon nanotube photodiodes[J],2009,325(5946).
APA	Gabor N.M.,Zhong Z.,Bosnick K.,Park J.,&McEuen P.L..(2009).Extremely efficient multiple electron-hole pair generation in carbon nanotube photodiodes.Science,325(5946).
MLA	Gabor N.M.,et al."Extremely efficient multiple electron-hole pair generation in carbon nanotube photodiodes".Science 325.5946(2009).