Broadband coherent emission observed in polycrystalline CdSSe nanowires under high excitation
Broadband coherent emission observed in polycrystalline CdSSe nanowires under high excitation
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高激发下多晶 CdSSe 纳米线中观察到的宽带相干发射
DOI:
10.1088/0953-8984/21/37/375302
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发表时间:
2009-09
影响因子:
2.7
通讯作者:
Wang, Q.
中科院分区:
文献类型:
--
作者:
He, P. B.;Pan, A. L.;Liu, R. B.;Zou, B. S.;Cao, J. H.;Li, Z. A.;Zhang, Q. L.;Wang, Q.
Polycrystalline CdSSe nanowires were prepared with a low-temperature physical evaporation method. Structural analysis combining HRTEM with XRD demonstrate that these as-prepared wires have a hexagonal wurtzite structure with a polycrystalline nature. Locally excited optical measurements show that though these wires can still act as waveguide cavities, their polycrystalline nature will induce a significant redshift of the emitted light during its transportation along them. Power dependent photoluminescence measurement shows that these polycrystalline wires can achieve broadband coherent emission at the band-edge band under high excitation, which shows marked contrast with the much narrower and multimode spectra observed in the single-crystalline nanowires with the same elemental composition. Time-resolved photoluminescence further confirms the occurrence of coherent emission in these wires, which originates from the electron–hole plasma (EHP) recombination of high-density carriers generated under high excitation. These kinds of polycrystalline alloy nanowires with broadband coherent emission should have potential uses in nano-scaled wavelength tunable light-emitting devices.
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影响因子:
15
作者:
D. Gargas;M. Toimil-Molares;P. Yang
通讯作者:
D. Gargas;M. Toimil-Molares;P. Yang
DOI:
10.1364/josab.8.001802
发表时间:
1991-09
影响因子:
1.9
作者:
F. Hache;M. C. Klein;D. Ricard;C. Flytzanis
通讯作者:
F. Hache;M. C. Klein;D. Ricard;C. Flytzanis
DOI:
10.1142/1977
发表时间:
1990-04
期刊:
--
影响因子:
--
作者:
H. Haug;S. Koch
通讯作者:
H. Haug;S. Koch
影响因子:
56.9
作者:
Law, M;Sirbuly, DJ;Yang, PD
通讯作者:
Yang, PD
影响因子:
3.5
作者:
Pan, AL;Yang, H;Zou, BS
通讯作者:
Zou, BS