منابع مشابه
Evidence of the Zn vacancy acting as the dominant acceptor in n-type ZnO.
We have used positron annihilation spectroscopy to determine the nature and the concentrations of the open volume defects in as-grown and electron irradiated (E(el)=2 MeV, fluence 6 x 10(17) cm(-2)) ZnO samples. The Zn vacancies are identified at concentrations of [V(Zn)] approximately 2 x 10(15) cm(-3) in the as-grown material and [V(Zn)] approximately 2 x 10(16) cm(-3) in the irradiated ZnO. ...
متن کاملSelf-compensation in semiconductors: The Zn vacancy in Ga-doped ZnO
Rights: © 2011 American Physical Society (APS). This is the accepted version of the following article: Look, D. C. & Leedy, K. D. & Vines, L. & Svensson, B. G. & Zubiaga, A. & Tuomisto, Filip & Doutt, D. R. & Brillson, L. J. 2011. Self-compensation in semiconductors: The Zn vacancy in Ga-doped ZnO. Physical Review B. Volume 84, Issue 11. 115202/1-6. ISSN 1098-0121 (printed). DOI: 10.1103/physre...
متن کاملZn vacancy induced green luminescence on non-polar surfaces in ZnO nanostructures
Although generally ascribed to the presence of defects, an ultimate assignment of the different contributions to the emission spectrum in terms of surface states and deep levels in ZnO nanostructures is still lacking. In this work we unambiguously give first evidence that zinc vacancies at the (1010) nonpolar surfaces are responsible for the green luminescence of ZnO nanostructures. The result ...
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In this paper, we ask “Can proximity to towns reduces poverty in rural areas?” For this study we have mapped all the villages in Orissa. The study is based on small area poverty estimation methodology as well as the secondary data covering 47,395 villages and 109 towns. Our main findings are (i) there is a relationship between the distance to nearest town and rural poverty and (ii) poverty leve...
متن کاملVacancy defect distributions in bulk ZnO crystals
We have used positron annihilation spectroscopy to study vacancy defects in ZnO single crystals grown by various methods from both commercial and academic sources. The combination of positron lifetime and Doppler broadening techniques with theoretical calculations provides the means to deduce both the identities and the concentrations of the vacancies. The annihilation characteristics of the Zn...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2017
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.95.094105