Search Results - "Stiff, D. A"

High-detectivity, normal-incidence, mid-infrared (λ∼4 μm)InAs/GaAs quantum-dot detector operating at 150 K by Stiff, A. D., Krishna, S., Bhattacharya, P., Kennerly, S.

“…Normal-incidence InAs/GaAs quantum-dot detectors have been grown, fabricated, and characterized for mid-infrared detection in the temperature range from 78 to…”
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QUANTUM DOT OPTO-ELECTRONIC DEVICES by Bhattacharya, P, Ghosh, S, Stiff-Roberts, A D

“…▪ Abstract  Highly strained semiconductors grow epitaxially on mismatched substrates in the Stranski-Krastanow growth mode, wherein islands are formed after a…”
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Resonant infrared matrix-assisted pulsed laser evaporation of CdSe colloidal quantum dot/poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-(1-cyano vinylene)phenylene] hybrid nanocomposite thin films by Pate, R., Lantz, K.R., Stiff-Roberts, A.D.

“…CdSe colloidal quantum dot / poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-(1-cyano vinylene)phenylene] hybrid nanocomposite thin films were deposited using resonant…”
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High-temperature operation of InAs-GaAs quantum-dot infrared photodetectors with large responsivity and detectivity by Chakrabarti, S., Stiff-Roberts, A.D., Bhattacharya, P., Gunapala, S., Bandara, S., Rafol, S.B., Kennerly, S.W.

“…We have optimized the growth of multiple (40-70) layers of self-organized InAs quantum dots separated by GaAs barrier layers in order to enhance the absorption…”
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Substructure in the Andromeda Galaxy Globular Cluster System by Perrett, K. M, Stiff, D. A, Hanes, D. A, Bridges, T. J

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Contribution of field-assisted tunneling emission to dark current in InAs-GaAs quantum dot infrared photodetectors by Stiff-Roberts, A.D., Su, X.H., Chakrabarti, S., Bhattacharya, P.

“…A model for the dark current in quantum dot infrared photodetectors, including thermionic emission and field-assisted tunneling, is developed. The calculated…”
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Normal-incidence, high-temperature, mid-infrared, InAs-GaAs vertical quantum-dot infrared photodetector by Stiff, A.D., Krishna, S., Bhattacharya, P., Kennerly, S.W.

“…The growth, fabrication, and characterization of a normal-incidence, high-temperature, mid-wavelength infrared, InAs-GaAs vertical quantum-dot infrared…”
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Absorption, carrier lifetime, and gain in InAs-GaAs quantum-dot infrared photodetectors by Kochman, B., Stiff-Roberts, A.D., Chakrabarti, S., Phillips, J.D., Krishna, S., Singh, J., Bhattacharya, P.

“…Quantum-dot infrared photodetectors (QDIPs) are being studied extensively for mid-wavelength and long-wavelength infrared detection because they offer…”
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Raster-scan imaging with normal-incidence, midinfrared InAs/GaAs quantum dot infrared photodetectors by Stiff-Roberts, A. D., Chakrabarti, S., Pradhan, S., Kochman, B., Bhattacharya, P.

“…We demonstrate normal incidence infrared imaging with quantum dot infrared photodetectors using a raster-scan technique. The device heterostructure, containing…”
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Hot dot detectors by Krishna, S., Stiff-Roberts, A.D., Phillips, J.D., Bhattacharya, P., Kennerly, S.W.

“…The properties of normal-incidence, high-temperature, mid-wavelength IR, InAs/GaAs vertical QDIPs with and without an Al sub(0.3)Ga sub(0.7)As current-blocking…”
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Probing dopant incorporation in InAs/GaAs QDIPs by polarization-dependent Fourier transform infrared spectroscopy by Zhao, Z.Y., Yi, C., Stiff-Roberts, A.D., Hoffman, A.J., Wasserman, D., Gmachl, C.

“…In order to improve spectral response tunability of quantum-dot infrared photodetectors (QDIPs), it is critical to understand how dopants are incorporated into…”
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The impact of laser-target absorption depth on the surface and internal morphology of matrix-assisted pulsed laser evaporated conjugated polymer thin films by Pate, R., Stiff-Roberts, A.D.

“…The impact of laser-target absorption depth on the surface and internal morphology of matrix-assisted pulsed laser evaporated conjugated polymer thin films…”
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Resonant tunneling quantum dot infrared photodetector (RT-QDIP): separating dark current and photocurrent by Su, X.H., Stiff-Roberts, A.D., Chakrabarti, S., Singh, J., Bhattacharya, P.

“…In this paper, we present a novel approach to reduce dark current in quantum dot infrared photodetectors that uses resonant tunneling barriers to selectively…”
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Calculation of Intraband Absorption Coefficients in Organic/Inorganic Nanocomposites: Effects of Colloidal Quantum Dot Surface Ligand and Dot Size by Lantz, K. R., Stiff-Roberts, A. D.

“…Hybrid nanocomposite thin films composed of inorganic colloidal quantum dots (CQDs) embedded in an organic conjugated polymer have shown promise as a method…”
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Effect of donor-complex-defect-induced dipole field on InAs∕GaAs quantum dot infrared photodetector activation energy by Zhao, Z. Y., Yi, C., Lantz, K. R., Stiff-Roberts, A. D.

“…In order to understand dopant incorporation in quantum dot infrared photodetectors, three quantum dot (QD) Schottky diodes (undoped, delta doped, and…”
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Effect of donor-complex-defect-induced dipole field on In As ∕ Ga As quantum dot infrared photodetector activation energy by Zhao, Z. Y., Yi, C., Lantz, K. R., Stiff-Roberts, A. D.

“…In order to understand dopant incorporation in quantum dot infrared photodetectors, three quantum dot (QD) Schottky diodes (undoped, delta doped, and…”
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Doping characterization of In As ∕ Ga As quantum dot heterostructureby cross-sectional scanning capacitance microscopy by Zhao, Z. Y., Zhang, W. M., Yi, C., Stiff-Roberts, A. D., Rodriguez, B. J., Baddorf, A. P.

“…In order to better understand dopant incorporation in quantum dot infrared photodetectors, the application of cross-sectional scanning capacitance microscopy…”
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Doping characterization of InAs∕GaAs quantum dot heterostructure by cross-sectional scanning capacitance microscopy by Zhao, Z. Y., Zhang, W. M., Yi, C., Stiff-Roberts, A. D., Rodriguez, B. J., Baddorf, A. P.

“…In order to better understand dopant incorporation in quantum dot infrared photodetectors, the application of cross-sectional scanning capacitance microscopy…”
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Low-bias, high-temperature performance of a normal-incidence InAs/GaAs vertical quantum-dot infrared photodetector with a current-blocking barrier by Stiff-Roberts, A. D., Krishna, S., Bhattacharya, P., Kennerly, S.

“…The growth, fabrication, and characterization of a low-bias, high-temperature, InAs/GaAs vertical quantum dot infrared photodetector with a single Al 0.3 Ga…”
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Heterostructures for achieving large responsivity in InAs/GaAs quantum dot infrared photodetectors by Chakrabarti, S., Stiff-Roberts, A. D., Bhattacharya, P., Kennerly, S. W.

“…Quantum dot infrared photodetectors (QDIPs) offer normal-incidence detection, low dark current, high operating temperature, and multi-wavelength detection. In…”
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