State filling dependent luminescence in hybrid tunnel coupled dot-well structures.
State filling dependent luminescence in hybrid tunnel coupled dot-well structures.
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混合隧道耦合点阱结构中的状态填充相关发光
DOI:
10.1039/c2nr32477f
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发表时间:
2012
期刊:
影响因子:
6.7
通讯作者:
G. J. Salamo
中科院分区:
文献类型:
--
作者:
Y. I. Mazur;V. G. Dorogan;M. E. Ware;E. Marega;M. Benamara;Z. Y. Zhuchenko;G. G. Tarasov;C. Lienau;G. J. Salamo
A strong dependence of quantum dot (QD)–quantum well (QW) tunnel coupling on the energy band alignment is established in hybrid InAs/GaAs–InxGa1−xAs/GaAs dot–well structures by changing the QW composition to shift the QW energy through the QD wetting layer (WL) energy. Due to this coupling a rapid carrier transfer from the QW to the QD excited states takes place. As a result, the QW photoluminescence (PL) completely quenches at low excitation intensities. The threshold intensities for the appearance of the QW PL strongly depend on the relative position of the QW excitonic energy with respect to the WL ground state and the QD ground state energies. These intensities decrease by orders of magnitude as the energy of the QW increases to approach that of the WL due to the increased efficiency for carrier tunneling into the WL states as compared to the less dense QD states below the QW energy.
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DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
C. Lienau;A. Richter;G. Behme;M. Sueptitz;D. Heinrich;T. Elsaesser;M. Ramsteiner;R. Nötzel;K. Ploog
通讯作者:
K. Ploog
影响因子:
3.7
作者:
R. Oulton;J. Finley;J. Finley;A. Tartakovskii;D. Mowbray;M. S. Skolnick;M. Hopkinson;A. Vasanelli;R. Ferreira;G. Bastard
通讯作者:
G. Bastard
影响因子:
8.6
作者:
T. Guenther;C. Lienau;T. Elsaesser;M. Glanemann;V. M. Axt;T. Kuhn;S. Eshlaghi;A. Wieck
通讯作者:
T. Guenther;C. Lienau;T. Elsaesser;M. Glanemann;V. M. Axt;T. Kuhn;S. Eshlaghi;A. Wieck
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
M. Scholz;T. Aichele;O. Benson
通讯作者:
O. Benson
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
P. L. Souza;A. J. Lopes;T. Gebhard;K. Unterrainer;M. Pires;J. Villas;G. S. Vieira;P. Guimarães;N. Studart
通讯作者:
N. Studart