Тип публикации: статья из журнала
Год издания: 2024
Идентификатор DOI: 10.1002/lpor.202400468
Аннотация: <jats:title>Abstract</jats:title><jats:p>Upconversion (UC) process involves diverse energy levels and photoluminescence modes, however, it faces the challenge of concentration quenching of the doped lanthanide ions with multiple luminescence centers. Herein, Yb<jats:sup>3+</jats:sup>/Ho<jats:sup>3+</jats:sup> and Yb<jats:sup>3+</jaПоказать полностьюts:sup>/Tm<jats:sup>3+</jats:sup> are heavily codoped into the lead-free halide double perovskite single crystal Cs<jats:sub>2</jats:sub>NaErCl<jats:sub>6</jats:sub>, enabling the controlled energy transfer UC process, and accordingly, the UC materials exhibit anti-concentration-quenching owing to the defect tolerance characters. Depending on different doping couples, the UC materials show green and red emissions under the 980 nm laser excitations. Moreover, the green-to-red emission ratio in Yb<jats:sup>3+</jats:sup>/Tm<jats:sup>3+</jats:sup> codoped Cs<jats:sub>2</jats:sub>NaErCl<jats:sub>6</jats:sub> changes dynamically with the increasing pumping intensity due to the different sensitivities of the excited energy levels. This study provides a renewed direction of the lanthanide ions heavily-doped halide double perovskites toward UC materials and facilitates the development of new smart luminescence materials for optical information storage applications.</jats:p>
Журнал: Laser & Photonics Reviews
ISSN журнала: 18638880
Издатель: Wiley - VCH Verlag GmbH & CO. KGaA