The influence of heat treatment on the evolution of luminescence in silver exchanged zeolites is investigated under controlled atmosphere by using in situ fluorescence microscopy (see figure). The results indicate that the stable yellow Ag3n+ emitter is most efficiently created in a dry zeolite Y host. In zeolite A, the clusters interact with neighboring clusters or with water, decreasing the overall yellow luminescence.
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Cremer et al. (2010) studied this question.
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