Exploring the crystal field effect in magnetoplumbite phosphor for diverse emission wavelengths from red to SWIR

Yong Min Park; Ha Jun Kim; Won-Bin Im

doi:10.1117/12.2676335

6 October 2023 Exploring the crystal field effect in magnetoplumbite phosphor for diverse emission wavelengths from red to SWIR

Yong Min Park, Ha Jun Kim, Won-Bin Im

Author Affiliations +

Proceedings Volume PC12687, Infrared Sensors, Devices, and Applications XIII; PC126870E (2023) https://doi.org/10.1117/12.2676335
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Conference Poster

Abstract

As the need for infrared phosphors increases in the field of medical diagnosis, food analysis, biological imaging and machine vision, various infrared materials are being researched. Here, we reported CaAl12O19:Cr3+, Cr4+(CAO) phosphor that successfully synthesized by solid-state synthesis method. Among the five Al sites of CAO phosphor, two activators (Cr3+ and Cr4+) are doped into two different Al sites (Al4 (octahedral), Al3 (tetrahedral)). Excited by 414 nm or 577 nm, the CAO phosphor emits a two sharp spectrum (689, 1389 nm) and two broadband spectrum (700 to 1000, 1400 to 1800 nm). Each spectrum peaks were classified into an activator and its energy level transfer according to the Tanabe Sugano diagram. Through this, the luminescence mechanism of CAO was accurately analyzed and the energy level of Cr4+ hidden by Cr3+ luminescence was also confirmed.

Citation Download Citation

Yong Min Park, Ha Jun Kim, and Won-Bin Im "Exploring the crystal field effect in magnetoplumbite phosphor for diverse emission wavelengths from red to SWIR", Proc. SPIE PC12687, Infrared Sensors, Devices, and Applications XIII, PC126870E (6 October 2023); https://doi.org/10.1117/12.2676335

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