High-Performance Carbon Nanotube Light-Emitting Diodes with Asymmetric   Contacts

doi:10.1021/nl101513z

CORC > 北京大学 > 化学与分子工程学院

	High-Performance Carbon Nanotube Light-Emitting Diodes with Asymmetric Contacts
	Wang, Sheng ; Zeng, Qingsheng ; Yang, Leijing ; Zhang, Zhiyong ; Wang, Zhenxing ; Pei, Tian ; Ding, Li ; Liang, Xuelei ; Gao, Min ; Li, Yan ; Peng, Lian-Mao
刊名	nano letters
	2011
关键词	Carbon nanotube LED CNT diode FET EL FIELD-EFFECT TRANSISTORS BIPOLAR DIODE ELECTROLUMINESCENCE EMISSION DEPENDENCE ENERGIES EXCITONS DRIVEN
DOI	10.1021/nl101513z
英文摘要	Electroluminescence (EL) measurements are carried out on a two-terminal carbon nanotube (CNT) based light-emitting diode (LED). This two-terminal device is composed of an asymmetrically contacted semiconducting single-walled carbon nanotube (SWCNT). On the one end the SWCNT is contacted with Sc and on the other end with Pd. At large forward bias, with the Sc contact being grounded, electrons can be injected barrier-free into the conduction band of the SWCNT from the Sc contact and holes be injected into the valence band from the Pd electrode. The injected electrons and holes recombine radiatively in the SWCNT channel yielding a narrowly peaked emission peak with a full width at half-maximum of about 30 meV. Detailed EL spectroscopy measurements show that the emission is excitons dominated process, showing little overlap with that associated with the continuum states. The performance of the LED is compared with that based on a three-terminal field-effect transistor (FET) that is fabricated on the same SWCNT. The conversion efficiency of the two-terminal diode is shown to be more than three times higher than that of the FET based device, and the emission peak of the LED is much narrower and operation voltage is lower.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000286029400004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter; SCI(E); EI; PubMed; 36; ARTICLE; 1; 23-29; 11
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/151853]
专题	化学与分子工程学院信息科学技术学院
推荐引用方式 GB/T 7714	Wang, Sheng,Zeng, Qingsheng,Yang, Leijing,et al. High-Performance Carbon Nanotube Light-Emitting Diodes with Asymmetric Contacts[J]. nano letters,2011.
APA	Wang, Sheng.,Zeng, Qingsheng.,Yang, Leijing.,Zhang, Zhiyong.,Wang, Zhenxing.,...&Peng, Lian-Mao.(2011).High-Performance Carbon Nanotube Light-Emitting Diodes with Asymmetric Contacts.nano letters.
MLA	Wang, Sheng,et al."High-Performance Carbon Nanotube Light-Emitting Diodes with Asymmetric Contacts".nano letters (2011).