Microcavity-Integrated Carbon Nanotube Photodetectors

doi:10.1021/acsnano.6b02898

CORC > 北京大学 > 信息科学技术学院

	Microcavity-Integrated Carbon Nanotube Photodetectors
	Liang, Shuang ; Ma, Ze ; Wu, Gongtao ; Wei, Nan ; Huang, Le ; Huang, Huixin ; Liu, Huaping ; Wang, Sheng ; Peng, Lian-Mao
刊名	ACS Nano
	2016
关键词	photodetector carbon nanotube microcavity Schottky barrier photocurrent GRAPHENE PHOTODETECTOR ELECTRICAL CONTACTS DEVICES TRANSISTORS DRIVEN
DOI	10.1021/acsnano.6b02898
英文摘要	Carbon nanotubes (CNTs) are considered to be highly promising nanomaterials for multiwavelength, room-temperature infrared detection applications. Here, we demonstrate a single-tube diode photodetector monolithically integrated with a Fabry-Perot microcavity. A similar to 6-fold enhanced optical absorption can be achieved, because of the confined effect of the designed optical mode. Furthermore, taking advantage of Van-Hove-singularity band structures in CNTs, we open the possibility of developing chirality-specific (n,m) CNT-film-based signal detectors. Utilizing a concept of the "resonance and off-resonance" cavity, we achieved cavity integrated chirality-sorted CNT-film detectors working at zero bias and resonance-allowed mode, for specific target signal detection. The detectors exhibited a higher suppression ratio until a power density of 0.07 W cm(-2) and photocurrent of 5 pA, and the spectral full width at half-maximum is similar to 33 nm at a signal wavelength of 1200 nm. Further, with multiple array detectors aiming at different target signals integrated on a chip, a multiwavelength signal detector system can be expected to have applications in the fields of monitoring, biosensing, color imaging, signal capture, and on-chip or space information transfers. The approach can also bring other nanomaterials into on-chip or information optoelectronics, regardless of the available doping polarity.; National Science Foundation of China [61370009, 61271051, 61321001]; China Postdoctoral Science Foundation [2014M550559]; Recruitment Program of Global Youth Experts; CAS; SCI(E); EI; ARTICLE; shengwang@pku.edu.cn; lmpeng@pku.edu.cn; 7; 6963-6971; 10
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/492010]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Liang, Shuang,Ma, Ze,Wu, Gongtao,et al. Microcavity-Integrated Carbon Nanotube Photodetectors[J]. ACS Nano,2016.
APA	Liang, Shuang.,Ma, Ze.,Wu, Gongtao.,Wei, Nan.,Huang, Le.,...&Peng, Lian-Mao.(2016).Microcavity-Integrated Carbon Nanotube Photodetectors.ACS Nano.
MLA	Liang, Shuang,et al."Microcavity-Integrated Carbon Nanotube Photodetectors".ACS Nano (2016).