ICCAS OpenIR
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
2000-10-01
Source PublicationJOURNAL OF APPLIED PHYSICS
ISSN0021-8979
Volume88Issue:7Pages:4446-4448
AbstractAn 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].
Indexed BySCI
Language英语
WOS IDWOS:000089371600102
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76472
Collection中国科学院化学研究所
Corresponding AuthorGuo, GL
Affiliation1.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
Recommended Citation
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.
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