铋、钙掺杂对 BaLaMgTaO:Mn 红色荧光粉室内植物补光 LED 增强发光性能的影响

Enhanced luminescence performances of BaLaMgTaO:Mn red phosphor by Bi, Ca doping for indoor plant lighting supplementary LED.

机构信息

College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, China.

出版信息

Spectrochim Acta A Mol Biomol Spectrosc. 2022 Mar 5;268:120655. doi: 10.1016/j.saa.2021.120655. Epub 2021 Nov 24.

DOI:10.1016/j.saa.2021.120655

Abstract

A new perovskite BaLaMgTaO:Mn (BLMTO:Mn) red phosphor was synthesized for the first time via the high-temperature solid-state method. The emission band of the phosphor ranges from 650 to 750 nm, which matches well with the absorption band of P and P. By doping of Bi and Ca ions in the BLMTO:Mn phosphor, a 4.76-fold enhancement in the luminescence emission intensity was achieved. The optimized BLMTO:0.5%Mn, 1.5%Bi, 2%Ca phosphor exhibited a high quantum efficiency of 65% and a high color purity of 98.1% with the chromaticity coordinate (CIE) at (0.733, 0.267). Finally, a LED device was fabricated with the BLMTO:0.5%Mn, 1.5%Bi, 2%Ca phosphor for further agricultural lighting, which emits warm white light with a low color temperature of 3549 K. The result indicates that the BLMTO:Mn, Bi, Ca phosphors have a potential for applications in agricultural cultivations.

摘要

一种新的钙钛矿 BaLaMgTaO:Mn（BLMTO:Mn）红色荧光粉首次通过高温固相法合成。该荧光粉的发射带位于 650 至 750nm 之间，与 P 和 P 的吸收带很好地匹配。通过在 BLMTO:Mn 荧光粉中掺杂 Bi 和 Ca 离子，实现了发光发射强度的 4.76 倍增强。优化后的 BLMTO:0.5%Mn、1.5%Bi、2%Ca 荧光粉表现出高达 65%的量子效率和 98.1%的高色纯度，其色度坐标（CIE）为（0.733，0.267）。最后，用 BLMTO:0.5%Mn、1.5%Bi、2%Ca 荧光粉制备了一个 LED 器件，用于进一步的农业照明，发出色温为 3549K 的暖白光。结果表明，BLMTO:Mn、Bi、Ca 荧光粉在农业种植中有应用潜力。