Work

Blue LED-excitable ultra broadband near-infrared luminescence based on KCdF3:Cr3+/Ni2+ nanocrystals embedded in fluorosilicate glass

Year: 2025

Type: article

Abstract: The growing demand for broadband near-infrared (NIR) irradiation in security, biomedicine, and food science is driving the development of new NIR light sources.Herein, a series of Cr 3+ /Ni 2+ co-doped transparent glass ceramics containing octahedrally coordinated KCdF 3 nanocrystals have been successfully prepared.Under 450 nm blue light excitation, the combination of Cr 3+ and Ni 2+ results in an ultra-broadband NIR emission band ranging from 700 to 1800 nm.Based on the excitation and emission spectra and the decay lifetime curves, the energy transfer (ET) efficiency from Cr 3+ to Ni 2+ is confirmed to be 50.2%.A glass ceramic-converted NIR-LED was fabricated by integrating a commercial blue LED chip with a representative Cr 3+ /Ni 2+ co-doped glass ceramic and has demonstrated potential applications in the areas of covert information recognition and night vision illumination.Our investigation provides new insights into the development of ultra-broadband NIR light sources that are both cost-effective and efficient.

Source: Chinese Optics Letters

DOI: 10.3788/col202523.081601

Authors: Long Chen, Junhuan Lai, Yong Xu, Yinsheng Xu, Xueyun Liu

Institutions: Ningbo University, Ningbo University of Technology, Wuhan University of Technology, State Key Laboratory of Silicate Materials for Architecture

Language: English

Topic: Luminescence Properties of Advanced Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze