High-performance germanium quantum dot photodetectors: Response to continuous wave and pulsed excitation

2020 ◽  
Vol 117 (25) ◽  
pp. 251105
Author(s):  
S. Shi ◽  
A. Zaslavsky ◽  
D. Pacifici
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Continuous Wave ◽  
Pulsed Excitation

HIGH-PERFORMANCE RIDGE-WAVEGUIDE MULTI-STACK (N=2, 5 AND 10)InAs/InGaAs/GaAs QUANTUM DOT LASERS of 1.3 μm RANGE

2004 ◽  
Vol 03 (01n02) ◽  
pp. 187-192
Author(s):  
G. LIN ◽  
I. F. CHEN ◽  
F. J. LAY ◽  
J. Y. CHI ◽  
D. A. LIVSHITS ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Ground State ◽  
High Performance ◽  
Continuous Wave ◽  
Spectral Characteristics ◽  
Single Mode ◽  
Threshold Current ◽  
Ridge Waveguide ◽  
Low Threshold ◽  
Gaas Quantum Dot

We have investigated light-current and spectral characteristics of 2-, 5- and 10-stack InAs / InGaAs / GaAs quantum dot (QD) ridge-waveguide lasers grown by MBE. Ultra-low threshold current of 1.43 mA was achieved for 2-stack QD laser. Simultaneous lasing at ground- and excited-states was observed. This effect is accounted for the finite time of carriers capture to the ground-state in QDs. Multi-stack QD structures enables to maintain continuous-wave (CW) ground-state lasing up to the current density of 100×Jth and to achieve the highest output power and efficiency ever recorded for any single-mode lasers of 1.3-μm-wavelength range.

High performance continuous wave 1.3 μm quantum dot lasers on silicon

2014 ◽  
Vol 104 (4) ◽  
pp. 041104 ◽  
Author(s):  
Alan Y. Liu ◽  
Chong Zhang ◽  
Justin Norman ◽  
Andrew Snyder ◽  
Dmitri Lubyshev ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Continuous Wave ◽  
Quantum Dot Lasers

Carbon quantum dot-sensitized hollow TiO2 spheres for high-performance visible light photocatalysis

2021 ◽  
Author(s):  
Xianfeng Zhang ◽  
Zongqun Li ◽  
Shaowen Xu ◽  
Yaowen Ruan
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
High Performance ◽  
Carbon Quantum Dots ◽  
Visible Light Photocatalysis ◽  
Carbon Quantum Dot ◽  
Visible Light Photocatalytic

TiO2/CQD composites were synthesized through carbon quantum dots covalently attached to the surface of hollow TiO2 spheres for visible light photocatalytic degradation of organics.

High performance red-emitting multiple layer InGaN/GaN quantum dot lasers

2016 ◽  
Vol 55 (3) ◽  
pp. 032101 ◽  
Author(s):  
Thomas Frost ◽  
Arnab Hazari ◽  
Anthony Aiello ◽  
Md Zunaid Baten ◽  
Lifan Yan ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Quantum Dot Lasers ◽  
Multiple Layer

scholarly journals Flexible and efficient perovskite quantum dot solar cells via hybrid interfacial architecture

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Long Hu ◽  
Qian Zhao ◽  
Shujuan Huang ◽  
Jianghui Zheng ◽  
Xinwei Guan ◽  
...  
Keyword(s):  
Thin Film ◽  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
High Performance ◽  
Mechanical Stability ◽  
Mechanical Adhesion ◽  
Perovskite Quantum Dots ◽  
Efficient Charge ◽  
Photovoltaic Technologies

AbstractAll-inorganic CsPbI3 perovskite quantum dots have received substantial research interest for photovoltaic applications because of higher efficiency compared to solar cells using other quantum dots materials and the various exciting properties that perovskites have to offer. These quantum dot devices also exhibit good mechanical stability amongst various thin-film photovoltaic technologies. We demonstrate higher mechanical endurance of quantum dot films compared to bulk thin film and highlight the importance of further research on high-performance and flexible optoelectronic devices using nanoscale grains as an advantage. Specifically, we develop a hybrid interfacial architecture consisting of CsPbI3 quantum dot/PCBM heterojunction, enabling an energy cascade for efficient charge transfer and mechanical adhesion. The champion CsPbI3 quantum dot solar cell has an efficiency of 15.1% (stabilized power output of 14.61%), which is among the highest report to date. Building on this strategy, we further demonstrate a highest efficiency of 12.3% in flexible quantum dot photovoltaics.

scholarly journals Enhancing room-temperature NO2 gas sensing performance based on a metal phthalocyanine/graphene quantum dot hybrid material

RSC Advances ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 5618-5628
Author(s):  
Wenkai Jiang ◽  
Xinwei Chen ◽  
Tao Wang ◽  
Bolong Li ◽  
Min Zeng ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Gas Sensor ◽  
Hybrid Material ◽  
High Performance ◽  
Room Temperature ◽  
Gas Sensing ◽  
Metal Phthalocyanine ◽  
Graphene Quantum Dot ◽  
Sensing Performance

A high performance gas sensor based on a metal phthalocyanine/graphene quantum dot hybrid material was fabricated for NO2 detection at room-temperature.

High performance and reliable 1.3 μm InAs quantum dot lasers epitaxially grown on Si

2018 ◽  
Author(s):  
Daehwan Jung ◽  
Robert Herrick ◽  
Justin Norman ◽  
Yating Wan ◽  
Arthur C. Gossard ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Quantum Dot Lasers ◽  
Inas Quantum Dot

Mechanism of microlens formation in quantum dot glasses under continuous-wave laser irradiation

2001 ◽  
Vol 89 (12) ◽  
pp. 8273-8278 ◽  
Author(s):  
Yuri Kaganovskii ◽  
Irena Antonov ◽  
Fredrick Bass ◽  
Michael Rosenbluh ◽  
Audrey Lipovskii
Keyword(s):  
Quantum Dot ◽  
Laser Irradiation ◽  
Continuous Wave ◽  
Continuous Wave Laser ◽  
Wave Laser

High Performance Inkjet‐Printed Quantum‐Dot Light‐Emitting Diodes with High Operational Stability

2021 ◽  
pp. 2101069
Author(s):  
Siqi Jia ◽  
Haodong Tang ◽  
Jingrui Ma ◽  
Shihao Ding ◽  
Xiangwei Qu ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Operational Stability ◽  
Light Emitting
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