Intense single-band red upconversion emission in BiOCl:Er3+ layered semiconductor via co-doping Ho3+

作     者：Yuehong Peng Jincai Peng Jiajun Han Tianhui Wang Zhaoyi Yin Jianbei Qiu Qi W ang Zhengwen Yang Zhiguo Song Yuehong Peng;Jincai Peng;Jiajun Han;Tianhui Wang;Zhaoyi Yin;Jianbei Qiu;Qi Wang;Zhengwen Yang;Zhiguo Song

作者机构：School of Materials Science and EngineeringKunming University of Science and TechnologyKunming 650093China School of Physics and Electronical ScienceChuxiong Normal UniversityChuxiong 675000China Dean's OfficeSichuan University of Arts and ScienceDazhou 635000China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2020年第38卷第6期

页      面：577-583页

核心收录：

学科分类：081702[工学-化学工艺] 0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 0703[理学-化学] 

基　　金：the National Natural Science Foundation of China(11874186) the Applied Basic Research Program of Yunnan Province(2017FB079) the Reserve Talents Project of Yunnan Province(2015HB013) the Scientific Research Foundation of the Education Department of Yunnan Province(2018JS452)。 

主　　题：Single-band red emission BiOCl Er3+ Ho3+ Rare Earths 

摘      要：Exploring a new tuning way to facilely realize single-band red emission in trivalent rare-earth ions(RE3+) doped upconversion(UC) materials is still desirable.In this work,the intense single-band red emission is achieved by co-doping only Ho3+in the BiOCl:Er3+ under 1550 nm excitation.In the BiOCl layered host,co-doping Ho3+can further enhance the red emission and simultaneously suppress the green emission of Er3+,and thus obviously improve the red-to-green(R/G) ratio.It is found that Ho3+does not se rve as ene rgy trapping through the 5 I6 state as in traditional UC materials but acts as ET bridge(4 S3/2,2 H11/2(Er3+)→5 F4,5 S2(Ho3+)→4 F9/2(Er3+)).The tuning mechanism of Ho3+is discussed in detail and further confirms through a comparative experiment.Our research gives an unusual perspective to tune the UC behavior of Er3+through co-doping Ho3+,which might be inspiring for achievement of single-band red UC emission.