Thermally Stable Red‐Emitting Oxide Ceramics for Laser Lighting
Source abstract
Abstract
Abstract Laser‐driven phosphor‐converted white light sources are highly desirable for their unprecedented energy efficiency and lighting quality. However, important challenges remain due to a lack of efficient and stable red‐emitting materials. Here Eu2+‐activated oxide‐based double perovskites are explored as red emitters with thermally stable photoluminescence. Sr3TaO5.5:Eu2+ ceramics exhibit a red emission band peaking at 620 nm upon blue laser pumping owing to the Eu2+ occupation at highly ordered substitutional lattice sites. A constructed laser‐driven white light wheel under an incident power density of 19.2 W mm−2 presents a record luminous flux of 1115 lm with an excellent color rendering index of 90. This study invigorates the development of Eu2+‐activated oxide‐based ceramics with thermally stable luminescence for laser‐pumped lighting and display applications.
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Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Solid State Laser Technologies · Glass properties and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques Guangdong Engineering Technology Research and Development Centre of Special Optical Fiber Materials and Devices School of Materials Science and Engineering South China University of Technology Guangzhou 510641 China
Department of Physics and Engineering Physics University of Saskatchewan 116 Science Place Saskatoon Saskatchewan S7N 5E2 Canada
School of Physics and Optoelectronics South China University of Technology Guangzhou Guangdong 510641 China
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