Solid state carbon nanotube device for controllable trion   electroluminescence emission

doi:10.1039/c5nr07468a

CORC > 北京大学 > 信息科学技术学院

	Solid state carbon nanotube device for controllable trion electroluminescence emission
	Liang, Shuang ; Ma, Ze ; Wei, Nan ; Liu, Huaping ; Wang, Sheng ; Peng, Lian-Mao
刊名	NANOSCALE
	2016
关键词	INFRARED-EMISSION PHOTOLUMINESCENCE EXCITONS DEPENDENCE DEFECTS SPECTRA
DOI	10.1039/c5nr07468a
英文摘要	Semiconducting carbon nanotubes (CNTs) have a direct chirality-dependent bandgap and reduced dimensionality-related quantum confinement effects, which are closely related to the performance of optoelectronic devices. Here, taking advantage of the large energy separations between neutral singlet excitons and charged excitons, i.e. trions in CNTs, we have achieved for the first time all trion electroluminescence (EL) emission from chirality-sorted (8,3) and (8,4) CNT-based solid state devices. We showed that strong trion emission can be obtained as a result of localized impact excitation and electrically injected holes, with an estimated efficiency of similar to 5 x 10(-4) photons per injected hole. The importance of contact-controlled carrier injection (including symmetric and asymmetric contact configurations) and EL spectral stability for gradually increasing bias were also investigated. The realization of electrically induced pure trion emission opens up a new opportunity for CNT film-based optoelectronic devices, providing a new degree of freedom in controlling the devices to extend potential applications in spin or magnetic optoelectronics fields.; National Science Foundation of China [61370009, 61271051, 61390504, 61321001, 1427901]; Beijing Municipal Science and Technology Commission [Z151100003315009]; China Postdoctoral Science Foundation [2014M550559]; recruitment program of global youth experts; "100 talents project" of CAS; SCI(E); EI; PubMed; ARTICLE; shengwang@pku.edu.cn; lmpeng@pku.edu.cn; 12; 6761-6769; 8
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/434592]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Liang, Shuang,Ma, Ze,Wei, Nan,et al. Solid state carbon nanotube device for controllable trion electroluminescence emission[J]. NANOSCALE,2016.
APA	Liang, Shuang,Ma, Ze,Wei, Nan,Liu, Huaping,Wang, Sheng,&Peng, Lian-Mao.(2016).Solid state carbon nanotube device for controllable trion electroluminescence emission.NANOSCALE.
MLA	Liang, Shuang,et al."Solid state carbon nanotube device for controllable trion electroluminescence emission".NANOSCALE (2016).