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Nanomaterials
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Luminescent Applications of Rare-Earth-Doped Nanoparticles
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Luminescent Applications of Rare-Earth-Doped Nanoparticles

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanophotonics Materials and Devices".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 3175

Special Issue Editor

Dr. Lei Zhou

E-Mail Website
Guest Editor
School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai, China
Interests: luminescent applications; rare-earth-doped materials; energy transfer; light-emitting diode (LED); bio-medicine; NIR luminescence; X-ray luminescence; mechanoluminescence; glass; ceramics

Special Issue Information

Dear Colleagues,

As one of the most important features in human life, light brings us brightness and hope. More than 80% of the information that humans receive from the outside world depends on vision, in which light is an indispensable element. Nowadays, light is important in many applications such as in displays, lighting, detection, plant growth, biological imaging, and solar cells, as well as in some novel fields, such as laser display, fingerprint identification, and near-infrared (NIR) persistent luminescence multifunctional diagnosis and treatment. Among them, Rare earth ions have been widely used in the above luminescent areas due to the abundant energy level transitions and unique luminous properties.

With the development of synthesis technology, the controllable preparation of nano-and micro-nano or possibly nanoscaled rare earth luminescent materials provides more possibilities for their multifunctional applications in the field of luminescence. The present Special Issue of Nanomaterials is aimed at attracting the current state-of-the-art in the use of materials for luminescence application, a field that has blossomed since the 1860s, with seminal discoveries on persistent luminescent ZnS:Cu by Sidot. In the present Special Issue, we will present new ideas for future luminescent applications and new technologies of rare-earth-doped nanomaterials.

Dr. Lei Zhou
Guest Editor

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. Nanomaterials 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 2900 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

  • luminescent applications
  • rare-earth-doped materials
  • energy transfer
  • light-emitting diode (LED)
  • bio-medicine
  • NIR luminescence
  • X-ray luminescence
  • mechanoluminescence
  • glass
  • ceramics

Published Papers (2 papers)

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Research

10 pages, 2375 KiB  
Article
The Upconversion Luminescence of Ca3Sc2Si3O12:Yb3+,Er3+ and Its Application in Thermometry
by Junyu Hong, Feilong Liu, Miroslav D. Dramićanin, Lei Zhou and Mingmei Wu
Nanomaterials 2023, 13(13), 1910; https://doi.org/10.3390/nano13131910 - 22 Jun 2023
Cited by 1 | Viewed by 1182
Abstract
To develop novel luminescent materials for optical temperature measurement, a series of Yb3+- and Er3+-doped Ca3Sc2Si3O12 (CSS) upconversion (UC) phosphors were synthesized by the sol–gel combustion method. The crystal structure, phase purity, [...] Read more.
To develop novel luminescent materials for optical temperature measurement, a series of Yb3+- and Er3+-doped Ca3Sc2Si3O12 (CSS) upconversion (UC) phosphors were synthesized by the sol–gel combustion method. The crystal structure, phase purity, and element distribution of the samples were characterized by powder X-ray diffraction and a transmission electron microscope (TEM). The detailed study of the photoluminescence emission spectra of the samples shows that the addition of Yb3+ can greatly enhance the emission of Er3+ by effective energy transfer. The prepared Yb3+ and Er3+ co-doped CSS phosphors exhibit green emission bands near 522 and 555 nm and red emission bands near 658 nm, which correspond to the 2H11/2→4I15/2, 4S3/2→4I15/2, and 4F9/2→4I15/2 transitions of Er3+, respectively. The temperature-dependent behavior of the CSS:0.2Yb3+,0.02Er3+ sample was carefully studied by the fluorescence intensity ratio (FIR) technique. The results indicate the excellent sensitivity of the sample, with a maximum absolute sensitivity of 0.67% K−1 at 500 K and a relative sensitivity of 1.34% K−1 at 300 K. We demonstrate here that the temperature measurement performance of FIR technology using the CSS:Yb3+,Er3+ phosphor is not inferior to that of infrared thermal imaging thermometers. Therefore, CSS:Yb3+,Er3+ phosphors have great potential applications in the field of optical thermometry. Full article
(This article belongs to the Special Issue Luminescent Applications of Rare-Earth-Doped Nanoparticles)
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13 pages, 4862 KiB  
Article
Synthesis, Photoluminescent Characteristics and Eu3+-Induced Phase Transitions in Sr3Zr2O7:Eu3+ Red Phosphors
by Nianmin Chen, Yunjian Wang, Longfeng Li, Lei Geng and Maolin Zhang
Nanomaterials 2023, 13(9), 1446; https://doi.org/10.3390/nano13091446 - 24 Apr 2023
Cited by 3 | Viewed by 1574
Abstract
Designing phosphors that are excited by blue light is extraordinarily important for white light-emitting diodes (w-LEDs). In the present study, a new Ruddlesden–Popper type of SZO:xEu3+ (x = 0.01~0.10) phosphors was developed using solid-state reactions. Interestingly, a Eu3+ [...] Read more.
Designing phosphors that are excited by blue light is extraordinarily important for white light-emitting diodes (w-LEDs). In the present study, a new Ruddlesden–Popper type of SZO:xEu3+ (x = 0.01~0.10) phosphors was developed using solid-state reactions. Interestingly, a Eu3+ doping-induced phase transformation from the Sr3Zr2O7 (cubic) to the SrZrO3 (orthorhombic) phase was observed, and the impact of the occupied sites of Eu3+ ions on the lifetime of Sr3Zr2O7:xEu3+ phosphors is discussed in detail. Diffuse reflectance spectroscopy results showed that the band gap of SZO:xEu3+ phosphors gradually increased from 3.48 eV for undoped Sr3Zr2O7 hosts to 3.67 eV for SZO:0.10Eu3+ samples. The fluorescence excitation spectrum showed that ultraviolet (300 nm), near-ultraviolet (396 nm) and blue light (464 nm) were all effective excitation pump sources of Sr3Zr2O7:xEu3+ phosphors, and the strongest emission at 615 nm originated from an electric dipole transition (5D0→7F2). CIE coordinates moved from orange (0.5969, 0.4267) to the reddish-orange region (0.6155, 0.3827), and the color purity also increased. The fabricated w-LED was placed on a 460 nm chip with a mixture of YAG:Ce3+ and SZO:0.1Eu3+ samples and showed “warm” white light with a color rendering index (CRI) of 81.8 and a correlation color temperature (CCT) of 5386 K, indicating great potential for application in blue chip white LEDs. Full article
(This article belongs to the Special Issue Luminescent Applications of Rare-Earth-Doped Nanoparticles)
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