Designing Ultra‐Narrow‐Band Red Phosphor via Oxygen Vacancy Engineering for Transparent Display Application

Designing Ultra‐Narrow‐Band Red Phosphor via Oxygen Vacancy Engineering for Transparent Display Application

Abstract Narrow‐band red phosphors have been crucial in enabling energy‐efficient and wide color gamut display technologies. Developing novel red phosphors with narrower FWHM and suitable positions is still an urgent demand. Herein, a nanorod‐shaped Nb2O5:Pr3+ phosphor, featuring a single ultra‐narr...

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Bibliographic Details
Main Authors: Wei Wang, Yi Wei, Hang Yang, Jinxuan Sun, Fuyan Su, Hanrui Liao, Hua Zou, Mingrui Li, Guogang Li
Format: Article
Language:English
Published: Wiley 2025-04-01
Series:Advanced Science
Subjects:
anti‐thermal quenching
oxygen vacancy
red emission
transparent display
ultra‐narrow‐band
Online Access:https://doi.org/10.1002/advs.202416761
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Summary:Abstract Narrow‐band red phosphors have been crucial in enabling energy‐efficient and wide color gamut display technologies. Developing novel red phosphors with narrower FWHM and suitable positions is still an urgent demand. Herein, a nanorod‐shaped Nb2O5:Pr3+ phosphor, featuring a single ultra‐narrow‐band red emission at 612 nm with FWHM of only 19 nm, is reported. The single narrow‐band is associated with oxygen vacancies, which can influence the electron–hole recombination energy. Besides, the intensity of PL spectra presents anti‐thermal properties and achieves an unexpected 12.5‐fold enhancement from 80 to 280 K. Detailed structural analyses, optical measurements, and DFT calculation are used to investigate abnormal photophysical processes. It canbe found that VO1 has the lowest Eform of 0.70 eV and the electron localization area around the Pr atom enlarges and presents the biggest distortion as VO1 appears. The energy transfer from oxygen vacancies to the luminescent center accounts for the large enhancement. At last, the fabricated transparent display screen presents a transparency of 50% and high color purity (98%), and the LED device shows a large color gamut. These findings advance the understanding of the relationship between luminescent properties and oxygen vacancies, inspiring more design of narrow‐band red phoshors for display applications.
ISSN:2198-3844

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