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Er 3+ /Yb 3+ and Er 3+ /Ho 3+ /Yb 3+ codoped La 2 CaZnO 5 phosphors were prepared by the combustion synthesis method. The Er 3+ /Yb 3+ -codoped sample exhibited strong green and red UC emissions. The phosphors are suitable for future applications in thermometry.
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Kumar et al. (2016) studied this question.
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