Ghildiyal R.Hsu C.-H.Lu C.-H.2019-05-132019-05-1320111546542Xhttps://scholars.lib.ntu.edu.tw/handle/123456789/407411The role of charge compensatory additives viz. monovalent ions (Li +, K+, and Na+) codoped with Tb3+ in strontium silicate phosphors is investigated. The addition of charge compensators enhances the luminescence intensity of the prepared phosphors because they neutralize the charge generated by Tb3+ substitution for Sr2+ ions. The vacancy and defects created due to Tb3+ ions are suitably minimized by the addition of aliovalent impurities in the host. As the Tb3+ concentration is increased, the green emission surpasses the blue emission due to cross relaxation following the energy transfer process. The role of monovalent Li+ ions among all charge compensator ions used was found to be most effective for enhanced Tb 3+ ion emissions. As the Tb3+ concentration increases, the chromaticity coordinates shifts from the blue to green region and the correlated color temperature moves to the daylight region. ? 2010 The American Ceramic Society.journal article10.1111/j.1744-7402.2010.02560.x2-s2.0-79959747762https://www.scopus.com/inward/record.uri?eid=2-s2.0-79959747762&doi=10.1111%2fj.1744-7402.2010.02560.x&partnerID=40&md5=aeb104eab4f78627ff7fbef4486cf4d6