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Advances in Fluorescent Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Optical and Photonic Materials".

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 1656

Special Issue Editor


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Guest Editor
School of Physics and Materials Science, Nanchang University, Nanchang 330001, China
Interests: photoluminescence; thermal simulated luminescence light-emitting-diode (LED); combinatorial material chip; first principle calculation

Special Issue Information

Dear Colleagues,

Fluorescent materials are useful in many applications, such as illumination, display, telecommunication, medical diagnosis, security checks, lasers, nuclear fusion, plant cultivation, etc. They play important roles in our daily life, culture and development.

More efficient and better thermal stable fluorescent materials are the permanent motivation for investigations. Furthermore, multimode excitation and multicolour emission are also of great interest.

The aim of this Special Issue is to focus on the latest developments in fluorescent materials including novel structures, luminescent centers and mechanisms, architectures or frameworks of packaged devices (e.g., LED and OLED), techniques, methods, and applications. We are mainly interested in advanced materials with excellent luminescent properties, but we are also interested in aspects that are useful for material developments such as novel designs for detectors, and unconventional applications are also welcome.

We believe that this collection will present recent interesting and important results that could be useful for young investigators and leading experts in the field. It will also be helpful for people with an interest in novel luminescent materials with advanced properties and potential applications in their projects.

Dr. Lan Luo
Guest Editor

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Keywords

  • photoluminescence
  • thermal simulated luminescence
  • persistent luminescence
  • multicolor emission
  • multimode excitation
  • anti-counterfeiting phosphors
  • diagnosis
  • light-emitting diode (LED)

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Published Papers (1 paper)

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Research

14 pages, 5478 KiB  
Article
Sol-Gel Synthesis and Photoluminescence Properties of a Far-Red Emitting Phosphor BaLaMgTaO6:Mn4+ for Plant Growth LEDs
by Niansi Fan, Quan Du, Rui Guo, Lan Luo and Li Wang
Materials 2023, 16(11), 4029; https://doi.org/10.3390/ma16114029 - 28 May 2023
Cited by 5 | Viewed by 1457
Abstract
Far-red (FR) emitting LEDs are known as a promising supplement light source for photo-morphogenesis of plants, in which FR emitting phosphors are indispensable components. However, mostly reported FR emitting phosphors are suffering from problems of wavelength mismatch with LED chips or low quantum [...] Read more.
Far-red (FR) emitting LEDs are known as a promising supplement light source for photo-morphogenesis of plants, in which FR emitting phosphors are indispensable components. However, mostly reported FR emitting phosphors are suffering from problems of wavelength mismatch with LED chips or low quantum efficiency, which are still far from practical applications. Here, a new efficient FR emitting double-perovskite phosphor BaLaMgTaO6:Mn4+ (BLMT:Mn4+) has been prepared by sol-gel method. The crystal structure, morphology and photoluminescence properties have been investigated in detail. BLMT:Mn4+ phosphor has two strong and wide excitation bands in the range of 250–600 nm, which matches well with a near-UV or blue chip. Under 365 nm or 460 nm excitation, BLMT:Mn4+ emits an intense FR light ranging from 650 to 780 nm with maximum emission at 704 nm due to 2Eg4A2g forbidden transition of Mn4+ ion. The critical quenching concentration of Mn4+ in BLMT is 0.6 mol%, and its corresponding internal quantum efficiency is as high as 61%. Moreover, BLMT:Mn4+ phosphor has good thermal stability, with emission intensity at 423 K keeping 40% of the room temperature value. The LED devices fabricated with BLMT:Mn4+ sample exhibit bright FR emission, which greatly overlaps with the absorption curve of FR absorbing phytochrome, indicating that BLMT:Mn4+ is a promising FR emitting phosphor for plant growth LEDs. Full article
(This article belongs to the Special Issue Advances in Fluorescent Materials)
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