Quantum dots-in-a-well infrared photodetectors grown by MOCVD

Jolley, Greg; Fu, Lan; Tan, Hark Hoe; Jagadish, Chennupati; Vukmirović, Nenad; Harrison, P.

doi:10.1109/iconn.2006.340642

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…To check the validation of the proposed model of the dark current for truncated conical QDIP, it has been compared with experimental results published in [31]. The fabricated cell consists of 10 layers of InGaAs truncated conical shaped QDs with base diameter of and height The QD layer is followed by barrier layer of GaAs with height of .…”

Section: Results and Discussion A Comparison With Experimental Resultsmentioning

confidence: 99%

J–V characteristics of dark current in truncated conical quantum dot infrared photodetectors (QDIPs)

Ali

El-Batawy

2023

Opt Quant Electron

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Quantum Dot Infrared Photodetector (QDIP) is one of the promising candidates for infrared photodetection due to its controllable heterojunction bandgap and sensitivity to normal incident radiation. It is expected to be superior to infrared photodetectors of mature technologies such as Mercury Cadmium Telluride (HgCdTe) or a quantum well infrared photodetector. In the presented paper, we have developed a theoretical model for the dark current in truncated conical QDIP as the truncated conical shaped QD structure is more appropriate to describe the fabricated dots. The dark current model is based on the drift diffusion model solving the main governing Poisson’s and continuity equations. In this model, the carrier mobility is calculated by solving time-dependent Boltzmann transport equation in the photodetector material with embedded truncated conical QDs using finite difference technique. The results of the developed model have been compared with the dark current characteristics with published experimental results of Indium Arsenide/Gallium Arsenide (InAs/GaAs) truncated QDIP. The effects of QD volume, QD aspect ratio and QD density and the operating temperature on the dark current characteristics have also been investigated.

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Section: Results and Discussion A Comparison With Experimental Resultsmentioning

confidence: 99%

J–V characteristics of dark current in truncated conical quantum dot infrared photodetectors (QDIPs)

Ali

El-Batawy

2023

Opt Quant Electron

View full text Add to dashboard Cite

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J-V Characteristics of Dark Current in Truncated Conical Quantum Dot Infrared Photodetectors (QDIPs)

Ali

El-Batawy

2022

Preprint

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Quantum Dot Infrared Photodetector (QDIP) is one of the promising candidates for infrared photodetection due to its controllable heterojunction bandgap and sensitivity to normal incident radiation. It is expected to be superior to infrared photodetectors of mature technologies such as an HgCdTe or a quantum well infrared photodetector. In the presented paper, we have developed a theoretical model for the dark current in truncated conical QDIP as the truncated conical shaped QD structure is more appropriate to describe the fabricated dots. The dark current model is based on the drift diffusion model solving the main governing Poisson’s and continuity equations. In this model, the carrier mobility is calculated by solving time-dependent Boltzmann transport equation in the photodetector material with embedded truncated conical QDs using finite difference technique. The results of the developed model have been compared with the dark current characteristics with published experimental results of InAs/GaAs truncated QDIP. The effects of QD volume, QD aspect ratio and QD density and the operating temperature on the dark current characteristics have also been investigated.

show abstract

Quantum dots-in-a-well infrared photodetectors grown by MOCVD

Cited by 2 publications

References 11 publications

J–V characteristics of dark current in truncated conical quantum dot infrared photodetectors (QDIPs)

J–V characteristics of dark current in truncated conical quantum dot infrared photodetectors (QDIPs)

J-V Characteristics of Dark Current in Truncated Conical Quantum Dot Infrared Photodetectors (QDIPs)

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