Influence of thermal effect on upconversion luminescence of Y2(MoO4)3:Yb3+, Ln3+ (Ln = Er, Tm). (31st August 2018)

• Record Type: Journal Article
• Authors: Pang, Tao; Peng, Wenbo
• Is Part Of: Materials research express. Volume 5:Number 10(2018)
• Publication Date: 2018-08-31
• Subjects: thermal effect -- Yb3+ sensitization -- upconversion luminescence -- luminescence quenching; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/aadbe9
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: Upconversion luminescence of Yb 3+ /Er 3+ and Yb 3+ /Tm 3+ co-doped Y2 (MoO4 )3 phosphors under 980 nm excitation is investigated. It is demonstrated that Yb 3+ co-doping causes a significant thermal effect. For Yb 3+ and Er 3+ co-doped case, the thermal effect, the long-distance energy migration and the energy transfer from Er 3+ to Yb 3+ are responsible for the abnormal luminescence quenching. In the case of Yb 3+ and Tm 3+ co-doped, the thermal effect improves the excited efficiency of Tm 3+, and thus the luminescence of Tm 3+ continues to strengthen at the Yb 3+ concentration that causes Er 3+ luminescence quenching. These results contribute to the design of the efficient upconversion materials.