Open AccessSensitizing Full‐Spectrum Lanthanide Luminescence within a Semiconductor CaZnOS Host
Author(s) -
Zhang Xin,
Zhu Qi,
Chen Bing,
Wang Shixun,
Rogach Andrey L.,
Wang Feng
Publication year - 2021
Publication title -
advanced photonics research
Language(s) - English
Resource type - Journals
ISSN - 2699-9293
DOI - 10.1002/adpr.202000089
Subject(s) - lanthanide , luminescence , materials science , phosphor , doping , ion , optoelectronics , excitation , ultraviolet , persistent luminescence , photochemistry , chemistry , physics , organic chemistry , thermoluminescence , quantum mechanics
Lanthanide ions are appealing for luminescence applications due to their sharp and tunable emission lines spanning the whole spectral range. However, the parity‐forbidden nature of the electronic transition in lanthanide ions typically results in ineffective excitation processes, which is a major obstacle to practical applications of lanthanide‐based luminescent materials. Herein, a general method to sensitize lanthanide luminescence within a semiconductor host of CaZnOS is developed. Efficient energy transfer from the host to a series of lanthanide ions with the assistance of Cu + or Mn 2+ codopants is demonstrated, which introduces intermediate energy states to mediate the energy transfer processes. Accordingly, a wide spectrum of emission is achieved by a single band excitation in the near‐ultraviolet region. Due to the efficient host sensitization, a phosphor‐converted light‐emitting diode (LED) is constructed by integrating the lanthanide‐doped CaZnOS with an ultraviolet LED chip, which is used for near‐infrared studies of biological tissues.