@article{c43978aaaf444dff927c9a6313bbfc00,
title = "Upconversion Red Emission and Near-Infrared Quantum-Cutting Persistent Luminescence of Nd3+-Activated Ca2SnO4Induced by Yb3+",
abstract = "In this work, we have investigated the near-infrared (NIR) photoluminescence, upconversion (UC), and long-lasting phosphorescence properties of Nd3+/Yb3+-doped Ca2SnO4 phosphors. Two-photon NIR quantum cutting (QC) luminescence is observed when the Nd3+-O2- charge-transfer band in Ca2SnO4:Nd3+, Yb3+ phosphors was excited, and the theoretical quantum yield is found to be close to 200\%. More interestingly, the unique two-photon UC red emission under 808 nm laser diode excitation and NIR QC persistent luminescence can be realized only in Nd3+-Yb3+ codoped samples. The energy-transfer mechanism between Nd3+ and Yb3+ is revealed from the energy level structure and decay measurements. Different cross-relaxation schemes related to 2F5/2-2F7/2 of Yb3+ and f-f transition of Nd3+ are proposed. The results show that multifunctional luminescence properties are achieved in Nd3+-doped Ca2SnO4 with the introduction of Yb3+. ",
author = "Zhang, \{Jing Xiang\} and Dejian Hou and Li, \{Jin Yan\} and Huihong Lin and Rui Huang and Yi Zhang and Jianhua Hao",
note = "Funding Information: This work was supported by the National Natural Science Foundation of China (no. 21301043), the Natural Science Foundation of Guangdong Province (no. 2018A030313081), the Guangdong Basic and Applied Basic Research Foundation (nos. 2020A1515011403 and 2020A1515011188), the Innovation Team Program of Higher Education of Guangdong, China (no. 2017KCXTD023), the Characteristic Innovation Projects of Guangdong Provincial Department of Education (no. 2018KTSCX137), the Science and Technology Planning Projects of Chaozhou (2019ZC09), and the Hanshan Normal University Start-up Fund for Doctoral Scientific Research (QD20190514). Funding Information: This work was supported by the National Natural Science Foundation of China (no. 21301043), the Natural Science Foundation of Guangdong Province (no. 2018A030313081), the Guangdong Basic and Applied Basic Research Foundation (nos. 2020A1515011403 and 2020A1515011188) the Innovation Team Program of Higher Education of Guangdong, China (no. 2017KCXTD023), the Characteristic Innovation Projects of Guangdong Provincial Department of Education (no. 2018KTSCX137), the Science and Technology Planning Projects of Chaozhou (2019ZC09), and the Hanshan Normal University Start-up Fund for Doctoral Scientific Research (QD20190514). Publisher Copyright: Copyright {\textcopyright} 2020 American Chemical Society.",
year = "2020",
month = sep,
day = "10",
doi = "10.1021/acs.jpcc.0c07240",
language = "English",
volume = "124",
pages = "19774--19780",
journal = "Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "36",
}