Open AccessTwo‐Step Sol–Gel Synthetic Strategy for Highly Dispersed Eu 2+ Luminescence Centers for Tuning Emission
Author(s) -
Shang Mengmeng,
Wang Jindi,
Dang Peipei,
Lian Hongzhou,
Lin Jun
Publication year - 2020
Publication title -
advanced photonics research
Language(s) - English
Resource type - Journals
ISSN - 2699-9293
DOI - 10.1002/adpr.202000028
Subject(s) - phosphor , luminescence , photoluminescence , materials science , luminous efficacy , emission spectrum , sol gel , light emitting diode , diode , ion , white light , optoelectronics , thermal stability , spectral line , nanotechnology , chemical engineering , chemistry , layer (electronics) , physics , organic chemistry , astronomy , engineering
The improvement of photoluminescence (PL) properties for phosphors that significantly impact the performance of white light emitting diodes (WLEDs), especially color rendition and luminous efficiency, is an extremely important challenge. Herein, an effective two‐step sol–gel synthetic strategy is developed to realize the regulation of PL spectra of Eu 2+ in Ca 9 MnNa(PO 4 ) 7 (CMNP) crystal lattice to yield the white light emission in a single‐phase phosphor. The thermal stability of this CMNP‐based phosphor is improved as compared with the phosphor using a solid‐state method. The origin of the enhanced Eu 2+ emission is investigated, and a thorough evaluation of the WLED fabricated using the white emitting phosphor demonstrated the two‐step sol–gel synthetic strategy is an effective way to adjust luminescence performance and provide another strategy to regulate PL spectra of luminescence materials in addition to the crystal field strategy based on ion substitution.