Zobrazeno 1 - 10
of 622
pro vyhledávání: '"G. C. Farlow"'
Publikováno v:
Journal of Physics D: Applied Physics. 53:444001
Publikováno v:
Journal of Electronic Materials. 43:863-867
We have developed instrumentation for collecting the luminescence spectrum from solid samples while they are irradiated by electrons of sufficient energy to produce point defects. This instrumentation is used to investigate the evolution of the broad
Autor:
Marius Grundmann, H. von Wenckstern, David C. Look, G. C. Farlow, Leonard J. Brillson, Klaus Magnus H Johansen, William Ruane, Kevin D. Leedy
Publikováno v:
Nanoscale. 8(14)
The spatial distribution of defect related deep band emission has been studied in zinc oxide (ZnO) nano- and microwires using depth resolved cathodoluminescence spectroscopy (DRCLS) in a hyperspectral imaging (HSI) mode within a UHV scanning electron
Publikováno v:
Physica B: Condensed Matter. :604-608
We present experimental results obtained with positron annihilation spectroscopy in room-temperature electron-irradiated n-type ZnO and GaN. The cation vacancies act as important compensating centers in 2 MeV electron-irradiated samples, even though
Publikováno v:
Journal of Electronic Materials. 36:307-311
Many point-defect–related centers have been investigated in electron-irradiated 6H-SiC by deep-level transient spectroscopy (DLTS). Most of them are believed to be related to vacancies. Our DLTS studies on deep centers produced by electron-irradiat
Publikováno v:
Physica B: Condensed Matter. :32-38
Advancements in ZnO device applications have fostered much interest in the electrical and optical activities of various defects and impurities in the material. Although it has long been known that Group III dopants, such as Al, make efficient donors,
Publikováno v:
Measurement Science and Technology. 15:297-302
A dc Hall-effect apparatus, based on conventional van der Pauw specimen geometry, has been developed for in situ measurements under van de Graaff electron irradiation (0.7–2.2 MeV). An associated cryostat permits ambient temperatures of 95–300 K.
Publikováno v:
Semiconductor Science and Technology. 19:752-754
In situ Hall-effect measurements have been carried out on vapour-phase-grown, n-type ZnO irradiated with 1.0 and 1.5 MeV electrons in the [000-1] direction. The electrical properties change very little during irradiation at temperatures as low as 130
Publikováno v:
Applied Physics Letters. 83:3525-3527
The dominant electrically active defect produced by 0.42 MeV electron irradiation in GaN is a 70 meV donor. Since only N-sublattice displacements can be produced at this energy, and since theory predicts that the N interstitial is a deep acceptor in
Autor:
Augustinas Galeckas, K. E. Knutsen, Filip Tuomisto, A. Yu. Kuznetsov, B. G. Svensson, A. Zubiaga, G. C. Farlow
By combining results from positron annihilation and photoluminescence spectroscopy with data from Hall effect measurements, the characteristic deep level emission centered at ∼1.75 eV and exhibiting an activation energy of thermal quenching of 11.5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b44bb9662e84762e2becc4fee91e2c9
https://aaltodoc.aalto.fi/handle/123456789/26994
https://aaltodoc.aalto.fi/handle/123456789/26994