Implementation of an algorithmic spectrometer using Quantum Dot Infrared Photodetectors

Tan, Chee Hing; Vines, Peter; Hobbs, Matthew J.; Anderson, Ben; Hugues, Maxime; David, J.P.R.

doi:10.1016/j.infrared.2010.12.019

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…In the past decade, QDIPs (quantum dots infrared photodetectors) have already been proved to possess more efficiencies than other types of semiconductor photodetectors and have become a very hot field of research due to a broader infrared response, a higher photoconductive gain, a lower dark current and an increased operating temperature [1][2][3][4][5]. With the expanding and deepening of the detecting application, the needs for the high performance and the high quality QDIP may be continuously increasing in the future.…”

Section: Introductionmentioning

confidence: 99%

Performance investigations of quantum dot infrared photodetectors

Liu

Zhang

2012

Infrared Physics & Technology

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Section: Introductionmentioning

confidence: 99%

Performance investigations of quantum dot infrared photodetectors

Liu

Zhang

2012

Infrared Physics & Technology

View full text Add to dashboard Cite

Noise characteristics investigation in quantum dot infrared photodetectors

Bai

Zhang

Wang

et al. 2013

Infrared Physics & Technology

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Modeling and analysis of intraband absorption in quantum-dot-in-well mid-infrared photodetectors

Hong

Rybchenko

Itskevich

et al. 2012

Journal of Applied Physics

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Intraband absorption in quantum-dot-in-a-well (DWELL) mid-infrared photodetectors is investigated using photocurrent spectroscopy and computationally cost-effective modeling linked to experimental data. The DWELL systems are challenging for modeling the electronic structure, which involves both discrete levels and the continuum energy spectrum. We show that the latter can be successfully approximated by a quasi-continuum in a large three-dimensional (3D) “quantum box” in which the electronic structure is calculated in the effective mass approximation using the finite element method. Experimental and simulated spectra show good agreement with each other, which justifies using the modeling for analysis of the experimental data. In particular, the origin of the peaks and the dot parameters, such as composition are deduced. Effects of dot composition and shape on the intraband absorption spectra are also predicted. Our model proves to be a useful tool in designing and analyzing advanced DWELL structures for any realistic 3D quantum dot geometry.

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Implementation of an algorithmic spectrometer using Quantum Dot Infrared Photodetectors

Cited by 3 publications

References 7 publications

Performance investigations of quantum dot infrared photodetectors

Performance investigations of quantum dot infrared photodetectors

Noise characteristics investigation in quantum dot infrared photodetectors

Modeling and analysis of intraband absorption in quantum-dot-in-well mid-infrared photodetectors

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