@article{oai:sucra.repo.nii.ac.jp:00013429, author = {E. , Kin and 福田, 武司 and S., Yamauchi and 本多, 善太郎 and H., Ohara and T., Yokoo and N., Kijima and 鎌田, 憲彦}, issue = {2}, journal = {Journal of Alloys and Compounds}, month = {}, note = {http://www.sciencedirect.com/science/journal/09258388 | http://www.sciencedirect.com/science/journal/09258388, In order to improve the stability of high color-purity red phosphors for ultraviolet excitation, we encapsulated an Eu-chelate, Eu(HFA)3(TPPO)2, by sol-gel derived glass networks and studied its thermal stability as well as photoluminescence (PL) characteristics. The PL quantum yield of an encapsulated sample was 14 times higher than that without encapsulation after annealing at 160 °C for 2 h in air. Three-dimensional glass networks with a sufficient density were shown to reduce thermal quenching of Eu(HFA)3(TPPO)2. Therefore, it is revealed that the surface coating of luminous chelates by sol-gel glasses is an effective way of inorganic and organic hybridization for high-stability of chelate bonding against free oxygen and water., text, application/pdf}, pages = {908--911}, title = {Thermal stability of europium(III) chelate encapsulated by sol-gel glass}, volume = {480}, year = {2009}, yomi = {フクダ, タケシ and ホンダ, ゼンタロウ and カマタ, ノリヒコ} }