Zobrazeno 1 - 10
of 121
pro vyhledávání: '"F. Shahedipour-Sandvik"'
Autor:
Alireza Lanjani, Benjamin McEwen, Vincent Meyers, David Hill, Winston K. Chan, Emma Rocco, Shadi Omranpour, F. Shahedipour-Sandvik
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 5, Pp 1-6 (2024)
Quantum well infrared photodetectors (QWIPs) have been demonstrated to be a suitable candidate for IR detection applications. These detectors attracted increasing interest due to their design flexibility and broad spectral absorption from short wave
Externí odkaz:
https://doaj.org/article/0557f4513c90445f82b371906fa85d8b
Overview and Progress Toward High-Efficiency, Air Stable, Cs-Free III-Nitride Photocathode Detectors
Autor:
Emma Rocco, Jonathan Marini, Kasey Hogan, Vincent Meyers, Benjamin McEwen, L. Douglas Bell, F. Shahedipour-Sandvik
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 2, Pp 1-12 (2022)
We review the recent progress to achieve air stable III-nitride photocathodes for applications as photon detectors. High conductivity p-type films are critically important to realize high quantum efficiency (QE) photocathodes with effective negative
Externí odkaz:
https://doaj.org/article/5a7bc1fce6c440d5abeefd7ae3b7852f
Publikováno v:
IEEE Journal of the Electron Devices Society, Vol 7, Pp 581-588 (2019)
We report on the implementation of dynamic body-bias technique to improve the performance of AlGaN/GaN high electron mobility transistors (HEMTs) with the successful integration of body-diode. In this configuration, p-GaN body-diode-based back-gate c
Externí odkaz:
https://doaj.org/article/d9b2a485f82144329c8cea92cf47059b
Autor:
Shouleh Nikzad, Michael Hoenk, April D. Jewell, John J. Hennessy, Alexander G. Carver, Todd J. Jones, Timothy M. Goodsall, Erika T. Hamden, Puneet Suvarna, J. Bulmer, F. Shahedipour-Sandvik, Edoardo Charbon, Preethi Padmanabhan, Bruce Hancock, L. Douglas Bell
Publikováno v:
Sensors, Vol 16, Iss 6, p 927 (2016)
Ultraviolet (UV) studies in astronomy, cosmology, planetary studies, biological and medical applications often require precision detection of faint objects and in many cases require photon-counting detection. We present an overview of two approaches
Externí odkaz:
https://doaj.org/article/f7b1af26bc8745119832843467d039b2
Autor:
M. A. Reshchikov, D. O. Demchenko, M. Vorobiov, O. Andrieiev, B. McEwen, F. Shahedipour-Sandvik, K. Sierakowski, P. Jaroszynski, M. Bockowski
Publikováno v:
Physical Review B. 106
Akademický článek
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Publikováno v:
Journal of Applied Physics. 133:155701
The diffusion behavior of Mg in Mg/N co-implanted GaN is investigated in response to a set of annealing conditions and methodologies, namely, 1000 °C/30 min thermal anneal, by high-temperature pulsed gyrotron microwave annealing at 1420 or 1500 °C,
Akademický článek
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Autor:
M. A. Reshchikov, O. Andrieiev, M. Vorobiov, D. Ye, D. O. Demchenko, K. Sierakowski, M. Bockowski, B. McEwen, V. Meyers, F. Shahedipour-Sandvik
Publikováno v:
Journal of Applied Physics. 131:125704
GaN samples were implanted with Be and annealed in different conditions in order to activate the shallow BeGa acceptor. Low-temperature photoluminescence spectra were studied to find BeGa-related defects in the implanted samples. A yellow band with a
Autor:
L. Cultrera, E. Rocco, F. Shahedipour-Sandvik, L. D. Bell, J. K. Bae, I. V. Bazarov, P. Saha, S. Karkare, A. Arjunan
Publikováno v:
Journal of Applied Physics. 131:124902
We report on the growth and characterization of a new class of photocathode structures for application as electron sources to produce high brightness electron beams for accelerator applications. The sources are realized using III-Nitride materials an