Abstract
Positron lifetime measurements on CdTe 0.15 % Zn-doped by weight are presented, trapping to monovacancy defects is observed. At low temperatures localization at shallow binding energy positron traps dominates. To aid defect identification density functional theory calculated positron lifetimes and momentum distributions are obtained using relaxed geometry configurations of the monovacancy defects and the Te antisite. These calculations provide evidence that combined positron lifetime and coincidence Doppler spectroscopy measurements have the capability to identify neutral or negative charge states of the monovacancies, the Te antisite, A-centers, and divacancy defects in CdTe.
Original language | English |
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Article number | 242102 |
Number of pages | 5 |
Journal | Applied Physics Letters |
Volume | 108 |
Issue number | 24 |
DOIs | |
Publication status | Published - 13 Jun 2016 |
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Positron annihilation studies of Zn-doped CdTe (Applied Physics Letters L16-01848R)
Keeble, D. J. (Creator), Kanda, G. (Creator) & Rabeh Mohamed Abdellatif, M. (Creator), University of Dundee, 2 Jun 2016
DOI: 10.15132/10000112
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Keeble, David
- Physics - Professor (Teaching and Research) of Condensed Matter and Materials
Person: Academic