Broadband emissions from Lu2Mg2Al2Si2O12:Ce3+ plate ceramic phosphors enable a high color-rendering index for laser-driven lighting. Issue 4 (23rd December 2019)

• Record Type: Journal Article
• Authors: Sun, Peng; Hu, Pan; Liu, Yongfu; Liu, Shuang; Dong, Rui; Jiang, Jun; Jiang, Haochuan
• Is Part Of: Journal of materials chemistry. Volume 8:Issue 4(2019)
• Page Start: 1405
• Page End: 1412
• Publication Date: 2019-12-23
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c9tc06068e
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : By selecting color converters by some standards, such as Lu2 Mg2 Al2 Si2 O12 :Ce 3+ PCP, a high color-rendering index is achieved in laser-driven lighting. Abstract : By selecting phosphors that can be efficiently excited by blue light and have a broadband emission, Lu2− x Mg2 Al2 Si2 O12 : x Ce 3+ (LMAS: x Ce 3+ ) was fabricated as a plate ceramic phosphor (PCP) for the first time. The optimal LMAS:0.08Ce 3+ PCP shows a broad yellow-orange emission peaking at 565 nm with a bandwidth of 130 nm. At 150 °C, the thermal stability of the LMAS:0.08Ce 3+ PCP is improved by 8% compared with that of the phosphor type. Benefitting from the broadband emissive characteristic, the LMAS:0.08Ce 3+ PCP provides a color-rendering index of 76–78 under 455 nm laser excitation. These values are the highest recorded in laser-driven lighting reported till now, and they are much better than that (55–65) of the YAG:Ce 3+ PCP. These excellent color performances indicate that the titled PCP is promising for application in laser-driven lighting that has a high color quality. We believe that this work will open a new perspective to develop PCPs for next-generation laser-driven lighting.