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Room‐Temperature Wavelength‐Tunable Single‐Band Upconversion Luminescence from Yb 3+ /Mn 2+ Codoped Fluoride Perovskites ABF 3
Author(s) -
Song Enhai,
Chen Zitao,
Wu Ming,
Ding Sha,
Ye Shi,
Zhou Shifeng,
Zhang Qinyuan
Publication year - 2016
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201500732
Subject(s) - materials science , luminescence , photon upconversion , lanthanide , ion , analytical chemistry (journal) , excitation , doping , ytterbium , fluoride , optoelectronics , inorganic chemistry , chemistry , physics , organic chemistry , chromatography , quantum mechanics
In contrast to well‐known multiple and fixed upconversion (UC) emission bands from lanthanide (Ln 3+ ) ions activated luminescent materials, room temperature wavelength‐tunable single‐band UC emissions are designed and demonstrated in Ln 3+ ions/transition metal Yb 3+ /Mn 2+ codoped fluoride perovskites ABF 3 (A = K + , Rb + , and Cs + ; B = Mg 2+ , Zn 2+ , and Cd 2+ ). Upon 976 nm laser excitation, the perovskites ABF 3 :Yb 3+ , Mn 2+ exhibit intense single band UC emission centered at 550–610 nm depending on the substitution of the A + and / or the B 2+ species in ABF 3 . Crystal structure and luminescent properties analysis show that the UC emission should originate from the| 2 F 7 / 2, 4 T 1 ( 4 G ) 〉 → | 2 F 7 / 2, 6 A 1 ( 6 S ) 〉 transitions of super‐exchange coupled Yb 3+ –Mn 2+ pair. The Stokes and UC emission properties, UC luminescence decay behaviors, as well as temperature dependent UC emission properties of ABF 3 :Yb 3+ , Mn 2+ are investigated and discussed in detail. The intense room (or high) temperature UC emission and ultralong UC decay lifetimes (≈25–45 ms) clearly reveal that the perovskites ABF 3 :Yb 3+ , Mn 2+ can be potentially applied in the fields of time‐resolved luminescence imaging, lighting, and solid state lasers.