Ultrafast dynamics of photoconductivity in lead sulfide nanocrystals in terahertz region

doi:10.1016/j.jallcom.2021.158873

	Ultrafast dynamics of photoconductivity in lead sulfide nanocrystals in terahertz region
	Liu, Zheng 1,4; Xu, Shujuan 1,2; Xie, Binhe 1,2; Luo, Yuanyuan 1; Mei, Hongying 3; Jiang, Huachao 1; Zeng, Zhi 1; Fei, Guangtao 1; Su, Fuhai 1
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2021-06-25
卷号	867
关键词	PbS nanocrystal Terahertz Photoconductivity Carrier dynamics
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2021.158873
通讯作者	Xu, Shujuan(sjxu@issp.ac.cn) ; Fei, Guangtao(gtfei@issp.ac.cn) ; Su, Fuhai(fhsu@issp.ac.cn)
英文摘要	The dynamics of carrier relaxation and charge transport of photoinduced carriers in Lead Sulfide nano-crystals with quantum confinement, synthesized by chemical bath deposition method, have been simultaneously determined using time-resolved terahertz spectroscopy with sub-picosecond time resolution. We use both Drude-Smith and Drude Lorenz model to successfully reproduce the photoconductivity spectra, which manifest that localized free-carriers not bounded excitons are responsible to the THz transport in PbS nanocrystals. The pump fluence dependence of carrier dynamics reveals the process of Auger recombination through the interaction between free carriers and excitons. (C) 2021 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[11774354] ; National Natural Science Foundation of China[51672279] ; National Natural Science Foundation of China[51727806] ; National Natural Science Foundation of China[11874361] ; Science Challenge Project[TZ2016001] ; CAS Innovation Grant[CXJJ-19-B08] ; CASHIPS Director's Fund[YZJJ201705]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000630276200020
资助机构	National Natural Science Foundation of China ; Science Challenge Project ; CAS Innovation Grant ; CASHIPS Director's Fund
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/120868]
专题	中国科学院合肥物质科学研究院
通讯作者	Xu, Shujuan; Fei, Guangtao; Su, Fuhai
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Huanghuai Univ, Sch Informat Engn, Henan Key Lab Smart Lighting, Zhumadian 463000, Peoples R China 4.Anhui Univ, Inst Phys Sci, Hefei 230601, Peoples R China
推荐引用方式 GB/T 7714	Liu, Zheng,Xu, Shujuan,Xie, Binhe,et al. Ultrafast dynamics of photoconductivity in lead sulfide nanocrystals in terahertz region[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,867.
APA	Liu, Zheng.,Xu, Shujuan.,Xie, Binhe.,Luo, Yuanyuan.,Mei, Hongying.,...&Su, Fuhai.(2021).Ultrafast dynamics of photoconductivity in lead sulfide nanocrystals in terahertz region.JOURNAL OF ALLOYS AND COMPOUNDS,867.
MLA	Liu, Zheng,et al."Ultrafast dynamics of photoconductivity in lead sulfide nanocrystals in terahertz region".JOURNAL OF ALLOYS AND COMPOUNDS 867(2021).