Excitation Density and Temperature Dependent Photoluminescence of InGaAs Self-Assembled Quantum Dots

1999 ◽  
Vol 38 (Part 1, No. 1B) ◽  
pp. 554-557 ◽  
Author(s):  
Wen-Hao Chang ◽  
Tzu-Min Hsu ◽  
Kuei-Fen Tsai ◽  
Tzer-En Nee ◽  
Jen-Inn Chyi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Excitation Density ◽  
Temperature Dependent ◽  
Self Assembled ◽  
Temperature Dependent Photoluminescence

scholarly journals Temperature dependence of ultrasharp luminescence lines in AlyIn1−yAs/AlxGa1−xAs self-assembled quantum dots

1996 ◽  
Vol 74 (S1) ◽  
pp. 216-219 ◽  
Author(s):  
S. Raymond ◽  
S. Fafard ◽  
S. Charbonneau
Keyword(s):  
Quantum Dots ◽  
Ground State ◽  
State Transition ◽  
Thermionic Emission ◽  
Excitation Density ◽  
High Excitation ◽  
Temperature Dependent ◽  
Time Resolved ◽  
Self Assembled ◽  
Intensity Evolution

Ensembles of~600 AlyIn1−yAs/AlxGa1−xAs self-assembled quantum dots (QDs) are investigated using photoluminescence (PL) and time-resolved PL in the visible. At very low excitation intensities, the PL spectrum shows multiple ultranarrow luminescence lines (FWHM ~200 μeV), which are attributed to the ground-state transition of a few dots (4 or less). The temperature and intensity evolution of these sharp lines is then monitored. The temperature-dependent measurements show that the line width and lifetime of the narrow lines remain constant up to the onset of thermionic, emission. Intensity-dependent measurements show that for high excitation density the collective background, emitted by the ensemble of QDs, is enhanced relative to the amplitude of individual ultranarrow lines.

Temperature-Dependent Photoluminescence Spectra of PbSe Quantum Dots for Temperature Markers

2012 ◽  
Vol 482-484 ◽  
pp. 2547-2550
Author(s):  
Peng Fei Gu ◽  
Ya Nan Wang ◽  
Jia Jia Cao ◽  
Yu Yan ◽  
Tie Qiang Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Temperature Sensitivity ◽  
Peak Position ◽  
Strong Temperature Dependence ◽  
Photoluminescence Spectra ◽  
Temperature Dependent ◽  
Temperature Variations ◽  
Temperature Changes ◽  
Optical Readout ◽  
Temperature Dependent Photoluminescence

We here report the temperature effect on photoluminescence(PL) spectra of PbSe quantum dots (QDs), which exhibit a strong temperature dependence on their spectra position and intensity. They potentially act as the temperature marker, sensing temperature variations and reporting temperature changes remotely through optical readout. In addition, the temperature sensitivity characterized by peak position of PbSe QDs was found to be 0.39nm/°C in a range of 10-100 °C.

Temperature Dependent Photoluminescence Measurements of Single InP Quantum Dots

2007 ◽  
Author(s):  
Matthias Reischle ◽  
Gareth J. Beirne ◽  
Robert Rossbach ◽  
Michael Jetter ◽  
Peter Michler
Keyword(s):  
Quantum Dots ◽  
Temperature Dependent ◽  
Inp Quantum Dots ◽  
Temperature Dependent Photoluminescence

Temperature-Dependent Photoluminescence in Coupling Structures of CdSe Quantum Dots and a ZnCdSe Quantum Well

2005 ◽  
Vol 22 (6) ◽  
pp. 1518-1521 ◽  
Author(s):  
Jin Hua ◽  
Zhang Li-Gong ◽  
Zheng Zhu-Hong ◽  
An Li-Nan ◽  
Lu You-Ming ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Well ◽  
Cdse Quantum Dots ◽  
Temperature Dependent ◽  
Temperature Dependent Photoluminescence
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