Tailoring the upconversion of ABF3:Yb3+/Er3+ through Mn2+ doping. Issue 40 (3rd October 2016)

• Record Type: Journal Article
• Authors: Wu, M.; Jiang, X. F.; Song, E. H.; Su, J.; Chen, Z. T.; Dai, W. B.; Ye, S.; Zhang, Q. Y.
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 40(2016)
• Page Start: 9598
• Page End: 9607
• Publication Date: 2016-10-03
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6tc02982e
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Different tailoring effect of green and red upconversion (UC) emissions from Er 3+ ions has been successfully achieved in ABF3 :Yb 3+ /Er 3+ /Mn 2+ (A = K, Cs; B = Zn, Cd) by utilizing distinct Er 3+ –Mn 2+ energy transfer processes resulted from the different Mn 2+ energy level position in ABF3 . Abstract : Successful upconversion (UC) tuning from multi-bands to one single red band from Er 3+ ions was realized in cubic perovskite ABF3 :Yb 3+ /Er 3+ (A = K, Cs; B = Zn, Cd) through Mn 2+ doping. Based on UC emission spectra and decay kinetics of KZnF3 :Yb 3+ /Er 3+ with different Mn 2+ contents, a bidirectional energy transfer process between Mn 2+ and Er 3+ ions was confirmed to explain the UC tuning mechanism. More importantly, we studied the influence of the Mn 2+ energy level position on the UC properties for Er 3+ in ABF3 hosts. Interestingly, great enhancement of green UC emissions was observed for Er 3+ ions in KCdF3 and CsCdF3 hosts upon Mn 2+ doping. Comparison of UC emissions and lifetimes of Er 3+ ions in the three materials was carried out to probe the different UC processes in ABF3 (A = K, Cs; B = Zn, Cd) hosts. The different energy transfer mechanism between Mn 2+ and Er 3+, which is affected by the Mn 2+ energy level position, was proposed to explain the UC difference in the three matrices. This research convincingly confirmed the occurrence of energy transfer between Er 3+ and Mn 2+ ions and provided deep insights into the importance of the Mn 2+ energy level position in tuning the UC properties of Er 3+ in diverse hosts, while allowing us to better control the UC properties through Mn 2+ doping.