Resolving exciton diffusion in InGaAs quantum wells using micro-photoluminescence mapping with a lateral excitation
Resolving exciton diffusion in InGaAs quantum wells using micro-photoluminescence mapping with a lateral excitation
复制标题
使用横向激发的微光致发光映射解决 InGaAs 量子阱中的激子扩散问题
DOI:
10.1088/0268-1242/28/12/125004
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发表时间:
2013-12
影响因子:
1.9
通讯作者:
Xu, Xiulai
中科院分区:
文献类型:
--
作者:
Tang, Jing;Xu, Zheng;Jin, Kuijuan;Xu, Xiulai
We report a spatially resolved photoluminescence mapping of InGaAs quantum wells. The photoluminescence was collected on top of the quantum well, with a HeNe laser pumping horizontally or vertically. In the horizontal configuration, at temperature of 68 K, the spectral linewidth narrows from 2.8 to 2.2 meV with the peak shifting from 1.4425 to 1.4415 eV, while at 3.8 K these changes were not observed. This demonstrates that photo-generated carriers can diffuse away from the laser spot and relax to the lower energy states in the case when the charge carriers are thermally activated. The spectra narrowing in the vertical configuration, which could not be observed, is due to the fact that the emitted light was always collected from the same spot of the pumping laser without diffusion.
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影响因子:
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作者:
Li, Zhenhua;Wu, Jiang;Wang, Zhiming M.;Fan, Dongsheng;Guo, Aqiang;Li, Shibing;Yu, Shui-Qing;Manasreh, Omar;Salamo, Gregory J.
通讯作者:
Salamo, Gregory J.
影响因子:
3.7
作者:
PATANE, A;POLIMENI, A;MARTELLI, F
通讯作者:
MARTELLI, F
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4
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3.7
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通讯作者:
G. Schinner;E. Schubert;M. Stallhofer;J. Kotthaus;D. Schuh;A. Rai;D. Reuter;A. Wieck;A. Govorov
影响因子:
64.8
作者:
Kasprzak, J.;Richard, M.;Dang, Le Si
通讯作者:
Dang, Le Si