Intense and stable blue-violet emission from porous silicon modified with alkyls

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	Intense and stable blue-violet emission from porous silicon modified with alkyls
	Li, HL ; Xu, DS ; Guo, GL ; Gui, LL ; Tang, YQ ; Ai, XC ; Sun, ZY ; Zhang, XK ; Qin, GG
刊名	JOURNAL OF APPLIED PHYSICS
	2000-10-01
卷号	88 期号:7 页码:4446-4448
ISSN号	0021-8979
英文摘要	An intense blue-violet band, centered at 3.0 eV, has been observed besides the red-orange band of the photoluminescence (PL) from the chemically modified porous silicon (PS) samples. The PS samples were formed on 30-50 Ohm cm p-type (100) Si wafers by anodic etching at large current densities and then treated with 5-cyano-1-pentynes in toluene solution at 110-120 degrees C. The intensities of the blue-violet lights increase with the increasing of the etching current densities, while the peak energies are hardly changed. The Fourier transform infrared spectra of the modified samples show that the alkyls have been bonded to the surfaces of the nanometer crystallite silicon particles. The decays of the blue-violet emission with a lifetime about 0.5 mu s are different from the nanosecond lifetimes of the blue emissions in the oxidized PS samples reported before, and the 20 mu s lifetimes of the concomitant orange PL bands. A carbon-compounds-related luminescence center has been proposed as the origin of this blue-violet PL band. (C) 2000 American Institute of Physics. [S0021-8979(00)01920-4].
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000089371600102
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/76471]
专题	中国科学院化学研究所
通讯作者	Guo, GL
作者单位	1.Peking Univ, Inst Phys Chem, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100080, Peoples R China 3.Peking Univ, Dept Phys, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Li, HL,Xu, DS,Guo, GL,et al. Intense and stable blue-violet emission from porous silicon modified with alkyls[J]. JOURNAL OF APPLIED PHYSICS,2000,88(7):4446-4448.
APA	Li, HL.,Xu, DS.,Guo, GL.,Gui, LL.,Tang, YQ.,...&Qin, GG.(2000).Intense and stable blue-violet emission from porous silicon modified with alkyls.JOURNAL OF APPLIED PHYSICS,88(7),4446-4448.
MLA	Li, HL,et al."Intense and stable blue-violet emission from porous silicon modified with alkyls".JOURNAL OF APPLIED PHYSICS 88.7(2000):4446-4448.