Photoluminescent transparent ceramics with an adjustable spectrum for high-color rendering laser lighting. Issue 46 (29th October 2020)

• Record Type: Journal Article
• Authors: Yang, Jiayao; Han, Tao; Cao, Yangfei; Lang, Tianchun; Fang, Shuangqiang; Cao, Shixiu; Peng, Lingling; Liu, Bitao; Tian, Zhongqing; Gao, Wei
• Is Part Of: Journal of materials chemistry. Volume 8:Issue 46(2020)
• Page Start: 16483
• Page End: 16488
• Publication Date: 2020-10-29
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0tc04117c
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Photoluminescent transparent ceramics with an adjustable spectrum are fabricated and combined with blue laser diodes for art lighting. Abstract : Laser diode (LD) lighting is highly luminescent and safe due to the replacement of traditional wires with optical fibers, and is suitable for museum lighting. However, the current LD lighting has a low color rendering index (CRI) that affects the visual splendor because of the lack of a red component in the spectra of the photoluminescent transparent ceramic (TC). In this study, a series of Lu2.98 Al5−2 x Si x O12 :0.02Ce 3+, x Mn 2+ ( x = 0–0.12) photoluminescent TCs with a transmittance of T = 48.5–78% and a spectrum adjustable from 500 to 800 nm are synthesized, which show excellent thermal stability. Their photoluminescence property is retained at 99% of the initial value at 425 K when the doping of Mn 2+ is x = 0.01. The color rendering index of the LD system assembled with these photoluminescent TCs and high-power blue LDs reached 80.1, while the correlated-color temperature (CCT) is 3298 K. These characteristics shows the LD system is promising for application in museum lighting.