Design and numerical modeling of normal-oriented quantum wire infrared photodetector array

Crouse, David T.; Crouse, Michael

doi:10.1016/j.infrared.2006.01.001

Cited by 7 publications

(2 citation statements)

References 29 publications

(36 reference statements)

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“…It is envisioned that arrays of the 500nm long by 30nm diameter nanowire heterostructures (composed of (n-type or p-type CdTe)/n-type CdS) will function as intersubband photodetectors, as described previously by the authors. 15 Though similar to quantum well infrared photodetectors (QWIPs), nanowire heterostructure intersubband detectors will detect normal incident light and will be better able to tune phonon scattering, the latter feature allowing the important possibility of higher temperature operation. Using commonly quoted electron affinity values for CdTe (4.3eV) and CdS (4.6eV), the conduction band offset between heterostructure layers is 0.3eV (4.14µm).…”

Section: A Trench Isolating Each Pixelmentioning

confidence: 99%

Fabrication, characterization of II-VI semiconductor nanowires and applications in infrared focal plane arrays

2008

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The fragile nature of alumina and the intrinsic Al 2 O 3 barrier layer at the pore bases has hindered its use in optoelectronic devices. In this work, these issues have been addressed by the development of a nanoporous alumina template directly on a silicon substrate with platinum electrodes at the pore bases. This template was then used to perform dc galvanostatic electrochemical deposition of II-VI semiconductor heterostructure nanowires that were then used to fabricate pixilated detector arrays.

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Section: A Trench Isolating Each Pixelmentioning

confidence: 99%

Fabrication, characterization of II-VI semiconductor nanowires and applications in infrared focal plane arrays

2008

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“…CdS quantum dots (QDs) have diverse applications in nanotechnology, such as in display technologies, in vivo or in vitro biomedical imaging/detection, solar cells, lightemitting diodes, photocatalysis, photoluminescence, infrared photodetectors, environmental sensors, and biological sensors (Klein et al 1997;Mandal et al 2004;Alivisatos et al 2005;Medintz et al 2005;Crouse and Crouse 2006;Nag et al 2008;Yang et al 2009;Ionov et al 2010;Nozik et al 2010). And the biosynthesis of CdS QDs using microorganisms could be a promising tool.…”

Section: Introductionmentioning

confidence: 99%

Complete genome sequence of Raoultella sp. strain X13, a promising cell factory for the synthesis of CdS quantum dots

Luo

Xing

et al. 2019

3 Biotech

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A novel cadmium-resistant bacterium, Raoultella sp. strain X13, recently isolated from heavy metal-contaminated soil, and this strain can synthesize CdS quantum dots using cadmium nitrate [Cd(NO 4 ) 2 ] and l-cysteine. Biomineralization of CdS by strain X13 can efficiently remove cadmium from aqueous solution. To illuminate the molecular mechanisms for the biosynthesis of CdS nanoparticle, the complete genome of Raoultella sp. strain X13 was sequenced. The whole genome sequence comprises a circular chromosome and a circular plasmid. Cysteine desulfhydrase smCSE has been previously found to be associated with the synthesis of CdS quantum dots. Bioinformatics analysis indicated that the genome of Raoultella sp. strain X13 encodes five putative cysteine desulfhydrases and all of them are located in the chromosome. The genome information may help us to determine the molecular mechanisms of the synthesis of CdS quantum dots and potentially enable us to engineer this microorganism for applications in biotechnology.

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One‐step green synthesis by organic molten salt method and optical properties of CdS nanosheets

Zhang

2012

Cryst. Res. Technol.

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Cadmium sulfide (CdS) nanosheets were synthesized by an environment friendly, “green” organic molten salt (OMS) method at 220 °C. The as‐synthesized products were characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS), respectively. The XRD results reveal that the as‐synthesized CdS nanosheets are of the hexagonal wurtzite structure and the CdS nanosheets grow along the c‐axis. The SEM results indicate that the diameters and thickness of the CdS nanosheets are about 20–40 nm and 5–10 nm, respectively. The optical properties of the CdS nanosheets were investigated by ultraviolet–visible (UV‐Vis) spectroscopy and photoluminescence (PL) spectroscopy. The ultraviolet–visible spectrum exhibits two excitonic peaks with a step‐like absorption and the photoluminescence spectrum shows a green emission peak centered at around 524 nm. A possible growth mechanism of CdS nanosheets was discussed.

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Design and numerical modeling of normal-oriented quantum wire infrared photodetector array

Cited by 7 publications

References 29 publications

Fabrication, characterization of II-VI semiconductor nanowires and applications in infrared focal plane arrays

Fabrication, characterization of II-VI semiconductor nanowires and applications in infrared focal plane arrays

Complete genome sequence of Raoultella sp. strain X13, a promising cell factory for the synthesis of CdS quantum dots

One‐step green synthesis by organic molten salt method and optical properties of CdS nanosheets

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