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Materials
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Advances in Luminescent Materials: Characterization and Device Applications
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Advances in Luminescent Materials: Characterization and Device Applications

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

Deadline for manuscript submissions: 31 May 2026 | Viewed by 472

Special Issue Editors

Dr. Kai Li

E-Mail Website
Guest Editor
College of Science, China University of Petroleum, Beijing 102249, China
Interests: phosphors; nanomaterials; LEDs
Prof. Dr. Baojiu Chen

E-Mail Website
Guest Editor
School of Science, Dalian Maritime University, Dalian 116026, China
Interests: phosphors; luminescent materials; rare earth ions

Special Issue Information

Dear Colleagues,

In recent decades, much progress has been made in the field of luminescent materials, with the development of extensive applications in solid-state lighting, information encryption, anti-counterfeiting, biological imaging, optical sensing optical information storage, etc. As luminescent materials continue to evolve rapidly, an up-to-date summary of advancements in this research area is necessary. This Special Issue aims to advance the development and understanding of luminescent materials.

Dr. Kai Li
Prof. Dr. Baojiu Chen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • phosphors
  • LEDs
  • bioimaging
  • thermometer
  • anti-counterfeiting
  • luminescent materials

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Published Papers (1 paper)

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Research

22 pages, 8185 KB  
Article
A Non-Contact Phosphor Thermometry Technique for Determining the Optical Absorptivity of Materials
by Thomas M. F. Hutchinson, Matthew Davies, Callum Fisk, Hazem Zied, Jon R. Willmott and Matthew J. Hobbs
Materials 2025, 18(20), 4806; https://doi.org/10.3390/ma18204806 - 21 Oct 2025
Viewed by 361
Abstract
This work presents a bespoke, non-contact, and low-cost Phosphor Thermometry (PT) technique for the measurement of material absorptivity. The approach circumvents the challenges associated with traditional and intrusive calorimetric techniques, which require secure contact with the sample substrate. A thermographic phosphor (TP), Manganese-activated [...] Read more.
This work presents a bespoke, non-contact, and low-cost Phosphor Thermometry (PT) technique for the measurement of material absorptivity. The approach circumvents the challenges associated with traditional and intrusive calorimetric techniques, which require secure contact with the sample substrate. A thermographic phosphor (TP), Manganese-activated Magnesium Fluorogermanate (MFG), was used as a two-colour thermometer utilising the peak intensity ratio technique, enabling an empirical temperature measurement of a given Material Under Test (MUT). The system was calibrated to temperature across a dynamic range of 20°C to 140°C and subsequently assessed in terms of noise and relative sensitivity. A mathematical model describing the thermal behaviour of the samples was subsequently developed and used to infer the absorptivity value of the MUTs. Two paints, Black 3.0® and Avian-B500®, with known but contrasting absorptivities, were analysed, resulting in measured absorptivity values of 0.9385 and 0.0651 within a range of 0.0081 and 0.0127 for the two paints, respectively. Subsequent mixtures of both paints, with inherent unknown absorptivities, provided resolvable and incremental steps between the two extremities. Further measurements at specific narrow-band wavelengths of 600nm and 1550nm of Black 3.0® were performed, yielding median absorptivity values of 0.9598 and 0.9172 within a range of 0.0168 and 0.0396, respectively, therefore demonstrating the technique for the measurement of material absorptivity at discrete wavelengths. The potential of a non-contact calorimetric PT technique could provide a scalable, non-intrusive, and low-cost solution for measuring the wavelength-dependent absorptivity values of materials that are used across engineering and research fields. Full article
(This article belongs to the Special Issue Advances in Luminescent Materials: Characterization and Device Applications)
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