title: Modification on upconversion luminescence of Er3+-Yb3+co-doped BiOCl semiconductor nanosheets through interaction between nanohost and doping lanthanide.
abstract: We reported the upconversion luminescence (UCL) properties of Er3+-Yb3+co-doped BiOCl semiconductor nanosheets synthesized by hydrothermal method. Under 980nm excitation, the red and green UCL of Er3+ions were observed to be populated by a four and three-photon process in the case of absent or low concentration Yb3+dopant. However, an increase of Yb3+dopants show a completely opposite effect on the emission intensity of red and green one, accompanying with the change of upconverting process. It indicates that the red-shifting absorption edge of semiconductor and the super saturation UC processes involved with Yb3+and Er3+doping in BiOCl semiconductor nanosheets, respectively, are mainly responsible for the above UC phenomena.
authors.affiliation: School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China.
authors.forename: Zuyuan
authors.initials: Z
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China. Electronic address: liyongjin2008@163.com.
authors.forename: Yongjin
authors.initials: Y
authors.lastname: Li
authors.affiliation: School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China.
authors.forename: Yapai
authors.initials: Y
authors.lastname: Song
authors.affiliation: School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China.
authors.forename: Xiangzhou
authors.initials: X
authors.lastname: Zhang
authors.affiliation: School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Hu
authors.affiliation: School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China.
authors.forename: Jianbei
authors.initials: J
authors.lastname: Qiu
authors.affiliation: School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China.
authors.forename: Zhengwen
authors.initials: Z
authors.lastname: Yang
authors.affiliation: School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China. Electronic address: songzg@kmust.edu.cn.
authors.forename: Zhiguo
authors.initials: Z
authors.lastname: Song
keywords: BiOCl; Er(3+)-Yb(3+); Modification; Semiconductor nanosheets; Upconversion