Performance Analysis of Quantum Well Infrared Photodetectors

Mashade, Mohamed B. El; Ashry, M.; Nasr, A.

doi:10.1515/joc.2005.26.3.98

Cited by 4 publications

(5 citation statements)

References 14 publications

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“…The performance parameters can be summarized to responsivity, quantum absorption efficiency, and detectivity. The theoretical details of the dependence of these photodetectors performance parameters into quantum detectors parameters are studied before in previous articles (Aboshosha et al, 2009;Aboshosha et al, 2009b;Abou El-Fadl et al, 1998;Eladle et al, 2009;Nasr, El_mashade, 2006;El_mashade et al, 2003;El_mashade et al, 2005;Future Technologies Division, 2003;Nasr, 2011b;Nasr, 2008;Nasr,2006;Nasr & Ashry;2000;Nasr, 2007). From the obtained results, the QWIPs give high responsivity which mean smaller values of dark current in corresponding to other types.…”

Section: Summery and Conclusionmentioning

confidence: 99%

“…The technological competence in nanotechnology will be a compelling condition to compete successfully with better procedures and products on high technology markets in the future. Due to its interdisciplinary cross-section character, nanotechnology will affect broad application fields within the ranges of chemistry/materials, medicine/life sciences, electronics/ information technology, environmental and energy engineering, automotive manufacturing as well as optics/analytics and precision engineering in various ways (Aboshosha et al, 2009a;Aboshosha et al, 2009b;Abou El-Fadl et al, 1998;Eladle et al, 2009;Nasr, El_mashade, 2006;El_mashade et al, 2003;El_mashade et al, 2005;Future Technologies Division, 2003;Nasr, 2011b;Nasr, 2008;Nasr,2006;Nasr & Ashry;2000).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Infrared Radiation Photodetectors

Nasr¹

2012

Infrared Radiation

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Section: Summery and Conclusionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Infrared Radiation Photodetectors

Nasr¹

2012

Infrared Radiation

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“…(10) we get an equation for the potential of the first QD array. The average photocurrent density of QDIP is given by [15], [17], and [18] …”

Section: Photocurrent Modelsmentioning

confidence: 99%

“…After performing integration, a general equation for pho− tocurrent density for QDIP is obtained that is totally diffe− rent than that in [16,17] and formulated as …”

Section: Photocurrent Modelsmentioning

confidence: 99%

Comparison studies of infrared photodetectors with a quantum-dot and a quantum-wire base

El_Tokhy

Mahmoud

Konber

2011

Opto-Electronics Review

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This paper mainly presents a theoretical analysis for the characteristics of quantum dot infrared photodetectors (QDIPs) and quantum wire infrared photodetectors (QRIPs). The paper introduces a unique mathematical model of solving Poisson’s equations with the usage of Lambert W functions for infrared detectors’ structures based on quantum effects. Even though QRIPs and QDIPs have been the subject of extensive researches and development during the past decade, it is still essential to implement theoretical models allowing to estimate the ultimate performance of those detectors such as photocurrent and its figure-of-merit detectivity vs. various parameter conditions such as applied voltage, number of quantum wire layers, quantum dot layers, lateral characteristic size, doping density, operation temperature, and structural parameters of the quantum dots (QDs), and quantum wires (QRs). A comparison is made between the computed results of the implemented models and fine agreements are observed. It is concluded from the obtained results that the total detectivity of QDIPs can be significantly lower than that in the QRIPs and main features of the QRIPs such as large gap between the induced photocurrent and dark current of QRIP which allows for overcoming the problems in the QDIPs. This confirms what is evaluated before in the literature. It is evident that by increasing the QD/QR absorption volume in QDIPs/QRIPs as well as by separating the dark current and photocurrents, the specific detectivity can be improved and consequently the devices can operate at higher temperatures. It is an interesting result and it may be benefit to the development of QDIP and QRIP for infrared sensing applications.

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“…Modern research groups in the field of nanotechnology detectors have a most interest to these semiconductor-based detector devices. Because of the simplicity of fabrications processes, lower cost, broaden spectrum response, and matching compounds and size for recent nano-optoelectronic components in comparison to the commercial IR detectors such as HgCdTe [1][2][3][4][5][6][7]. QIRPs are classified to three categories according to quantization dimensions or degree of confinements.…”

Section: Introductionmentioning

confidence: 99%

Detectivity Performance of Quantum Wire Infrared Photodetectors

Nasr

2011

Joc

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The manuscript is devoted to calculate the detectivity, Figure of merit, of the quantum wire infrared photodetectors (QRIPs). The importance arises from two points. Firstly, the QRIPs give a stable and controllable performance in comparison with quantum dot infrared photodetectors (QDIPs). Secondly, the gap; difference between the photo and dark currents, is high enough to obtain a distinguished responsivity and detectivity. So, the dependence of detectivity behavior on the QRIPs parameters is discussed. From the results, one can notice that the superiority of QRIPs over the QDIPs which gives higher values of detectivity, about ten times or higher the latter under the same conditions. Hence, an improvement of the responsivity and detectivity of QRIPs compared to QDIPs has been perceived.Keywords. Nanotechnology IR detectors, quantum wires, infrared photodetectors, photo and dark current, responsivity and detectivity, average quantum wire density, lateral size, operating temperatures.

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Performance Analysis of Quantum Well Infrared Photodetectors

Cited by 4 publications

References 14 publications

Infrared Radiation Photodetectors

Infrared Radiation Photodetectors

Comparison studies of infrared photodetectors with a quantum-dot and a quantum-wire base

Detectivity Performance of Quantum Wire Infrared Photodetectors

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