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Electron-ion recombination rate coefficients of carbon-like Ar12+ 期刊论文  OAI收割
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2020, 卷号: 53, 期号: 8, 页码: 7
作者:  
Mahmood, S.;  Huang, Z. K.;  Wen, W. Q.;  Wang, S. X.;  Chen, C. Y.
  |  收藏  |  浏览/下载:42/0  |  提交时间:2022/01/18
Excitonic properties of vertically aligned ZnO nanotubes under high-density excitation (EI CONFERENCE) 会议论文  OAI收割
Lu Y. M.; Liang H. W.; Shen D. Z.; Zhang Z. Z.; Zhang J. Y.; Zhao D. X.; Liu Y. C.; Fan X. W.
收藏  |  浏览/下载:16/0  |  提交时间:2013/03/25
In this paper  highly oriented and vertically arranged ZnO nanotubes are prepared on Al2O3 (0 0 0 1) substrate without employing any metal catalysts by plasma-assisted molecular beam epitaxy. The photoluminescence (PL) spectra at room temperature are studied under high excitation densities. Under lower excitation density (60 kW/cm2)  PL spectrum shows that one strong free exciton emission (FE) locates at 3.306 eV. As the excitation density increases up to 200 kW/cm2  a new emission peak (Pn) located at low-energy side of FE is attributed to the spontaneous emission due to an exciton-exciton (Ex-E x) scattering process from two ground state excitons  where one exciton is recombined by emitting a photon and the other is scattered into the excited states of n=2  3  4.... Under excitation density of 300 kW/cm 2  the stimulated emission originating from Ex-E x scattering is obtained. When the excitation density is above 580 kW/cm2  the emission from electron-hole plasma is observed in low-energy side of the P band and indicates a typical superradiation recombination processes with increasing excitation density. 2006 Elsevier B.V. All rights reserved.  
Stimulated emissions in aligned CdS nanowires at room temperature 期刊论文  OAI收割
JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 卷号: 109, 期号: 51, 页码: 24268
Pan, AL; Liu, RB; Yang, Q; Zhu, YC; Yang, GZ; Zou, BS; Chen, KQ
收藏  |  浏览/下载:24/0  |  提交时间:2013/09/24