There is disclosed a number of rare-earth chelitte compounds which are useful for fluorescent thermal imaging applications over a wide temperature range. Several of these materials are ideal for particular imaging applications. Between EuTFC and EuHFC films, the entire temperature range of 30-300.degree....http://www.google.ca/patents/US5971610?utm_source=gb-gplus-sharePatent US5971610 - Fluorescent thermal imaging using rare-earth chelate films
