Acceptors related to group I elements in ZnO ceramics |
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| Authors: | VI Kushnirenko IV Markevich TV Zashivailo |
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| Institution: | 1. V. Lashkarev Institute of Semiconductor Physics, NAS of Ukraine, Pr. Nauky 45, Kiev 03028, Ukraine;2. National Technical University of Ukraine “КРI”, Pr. Pobedy 37, Kiev 03056, Ukraine |
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| Abstract: | ZnO ceramics doped with Li, Na or K were sintered in air for 4 h at 1000 °C. Electrical conductivity as well as photoluminescence (PL), PL excitation and photoconductivity spectra were measured and compared with those in undoped samples. The influence of both fast and slow cooling of the samples from 1000 °C on measured characteristics was investigated. The yellow–orange PL bands associated with the deep acceptors LiZn, NaZn and KZn were observed and the corresponding PL excitation spectra were determined. These acceptors were found to form some complexes with other lattice defects. |
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