scholarly journals Voltage-Tunable Mid- and Long-Wavelength Dual-Band Infrared Photodetector Based on Hybrid Self-Assembled and Sub-Monolayer Quantum Dots

Micromachines ◽  
2018 ◽  
Vol 10 (1) ◽  
pp. 4
Author(s):  
Yao Zhai ◽  
Guiru Gu ◽  
Xuejun Lu
Keyword(s):  
Quantum Dots ◽  
Dual Band ◽  
Band Selection ◽  
Infrared Photodetector ◽  
Long Wavelength ◽  
Long Wave ◽  
Self Assembled ◽  
Long Wave Infrared

In this paper, we report a mid-wave infrared (MWIR) and long-wave infrared (LWIR) dual-band photodetector capable of voltage-controllable detection band selection. The voltage-tunable dual-band photodetector is based on the multiple stacks of sub-monolayer (SML) quantum dots (QDs) and self-assembled QDs. By changing the photodetector bias voltages, one can set the detection band to be MWIR, or LWIR or both with high photodetectivity and low crosstalk between the bands.

scholarly journals Hybrid-mode driven dual-band absorber in long-wave infrared with a phase-gradient metasurface

2021 ◽  
Vol 11 (4) ◽  
pp. 1167
Author(s):  
Xiaoyan Li ◽  
Xiang Ye ◽  
Guanhai Li ◽  
Feilong Yu ◽  
Jin Chen ◽  
...  
Keyword(s):  
Dual Band ◽  
Hybrid Mode ◽  
Phase Gradient ◽  
Long Wave ◽  
Long Wave Infrared

Mid-Infrared Photodetector Using Self-Assembled InAs Quantum Dots Embedded in Modulation-Doped GaAs Quantum Wells

1999 ◽  
Vol 607 ◽  
Author(s):  
Seung-Woong Lee ◽  
Kazuhiko Hirakawa ◽  
Yozo Shimada
Keyword(s):  
Quantum Dots ◽  
Quantum Wells ◽  
High Mobility ◽  
Normal Incidence ◽  
Infrared Photodetector ◽  
Inas Quantum Dots ◽  
Operation Temperature ◽  
Long Lifetime ◽  
Quantum Dot Infrared Photodetector ◽  
Self Assembled

AbstractWe have designed and fabricated a quantum dot infrared photodetector which utilizes lateral transport of photoexcited carriers in the modulation-doped A1GaAs/GaAs two-dimensional (2D) channels. A broad photocurrent signal has been observed in the photon energy range of 100–300 meV due to bound-to-continuum intersubband absorption of normal incidence radiation in the self-assembled InAs quantum dots. A peak responsivity was as high as 2.3 A/W. The high responsivity is realized mainly by a high mobility and a long lifetime of photoexcited carriers in the modulation-doped 2D channels. Furthermore, we found that this device has high operation temperature and very high photoconductive gain.

Comparison of Quantum Dots-in-a-Double-Well and Quantum Dots-in-a-Well Focal Plane Arrays in the Long-Wave Infrared

2011 ◽  
Vol 58 (7) ◽  
pp. 2022-2027 ◽  
Author(s):  
Jonathan R. Andrews ◽  
Sergio R. Restaino ◽  
Scott W. Teare ◽  
Yagya D. Sharma ◽  
Woo-Yong Jang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Focal Plane ◽  
Focal Plane Arrays ◽  
Long Wave ◽  
Long Wave Infrared

scholarly journals 4.4 - Tiny Mid- and Long-Wave Infrared Spectrometer Mo¬dule with a MEMS Dual-Band Fabry-Pérot Filter

2011 ◽  
Author(s):  
M. Ebermann ◽  
N. Neumann ◽  
S. Hoppe ◽  
K. Hiller ◽  
M. Meinig ◽  
...  
Keyword(s):  
Dual Band ◽  
Long Wave ◽  
Fabry Perot ◽  
Infrared Spectrometer ◽  
Long Wave Infrared

Reduction in dark current using resonant tunneling barriers in quantum dots-in-a-well long wavelength infrared photodetector

2008 ◽  
Vol 93 (13) ◽  
pp. 131115 ◽  
Author(s):  
A. V. Barve ◽  
S. Y. Shah ◽  
J. Shao ◽  
T. E. Vandervelde ◽  
R. V. Shenoi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Dark Current ◽  
Resonant Tunneling ◽  
Infrared Photodetector ◽  
Long Wavelength ◽  
Long Wavelength Infrared

Self-Assembled InAs Quantum Dots on InP(001) for Long-Wavelength Laser Applications

ETRI Journal ◽  
2004 ◽  
Vol 26 (5) ◽  
pp. 475-480 ◽  
Author(s):  
Jin Soo Kim ◽  
Jin Hong Lee ◽  
Sung Ui Hong ◽  
Ho-Sang Kwack ◽  
Chul Wook Lee ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Laser Applications ◽  
Inas Quantum Dots ◽  
Long Wavelength ◽  
Self Assembled
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