(INVITED) Recent progress on broadband near-infrared phosphors-converted light emitting diodes for future miniature spectrometers

Veeramani Rajendran; Ho Chang; Ru-Shi Liu

Optical Materials: X (Jan 2019)

(INVITED) Recent progress on broadband near-infrared phosphors-converted light emitting diodes for future miniature spectrometers

Veeramani Rajendran,
Ho Chang,
Ru-Shi Liu

Affiliations

Veeramani Rajendran: Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan; Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei, 106, Taiwan
Ho Chang: Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei, 106, Taiwan; Corresponding author. Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei, 106, Taiwan.
Ru-Shi Liu: Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan; Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei, 106, Taiwan; Corresponding author. Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan and Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei, 106, Taiwan.

Journal volume & issue: Vol. 1

Abstract

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The development of phosphor-converted technology-based broadband near-infrared light source for miniature spectrometers to perform spectroscopy applications has recently attracted remarkable attention among researchers in the academe and industry. The transition metal element Cr3+-activated luminescent materials act as the potential candidates to meet the demands for increased near-infrared light spectral distribution. In this mini-review, the most recently developed broadband near-infrared phosphors activated by Cr3+ are listed and classified according to their major chemical element constituents. In addition to the luminescence mechanism of Cr3+, the association between the number of crystallographic sites and spectral distribution of near-infrared light is mainly reviewed with the example of known near-infrared phosphors, which may be helpful in exploring future broadband near-infrared phosphors. Finally, the performance-evaluating parameters of phosphor-converted near-infrared light-emitting diode are discussed and compared with those of known broadband near-infrared phosphors for spectroscopy applications. Keywords: Broadband near-infrared, pc-NIR LED, Cr3+ luminescence, Miniature spectrometers, Near-infrared spectroscopy, Phosphor host system

Published in Optical Materials: X

ISSN: 2590-1478 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: https://www.journals.elsevier.com/optical-materials-x

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