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Symmetry
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Advances in Perovskites: Growth, Characterization and Optoelectronic Devices
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Advances in Perovskites: Growth, Characterization and Optoelectronic Devices

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 3119

Special Issue Editor

Dr. Longxing Su

E-Mail Website
Guest Editor
Associate Professor, School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
Interests: perovskites; wide bandgap semiconductors; photodetector; laser diodes; light emitting diodes

Special Issue Information

Dear Colleagues,

During the past few years, perovskites have emerged as “star materials” in optoelectric devices with great potential in practical applications. The symmetric/asymmetric nature of the crystal lattice not only affects the energy band structure, phonon frequency, and defect states of perovskites, but also plays a key role in device performance. Therefore, the study of the symmetric/asymmetric nature and the crystal quality is important. In this Special Issue on "Advances in perovskites: growth, characterization, and optoelectronic devices", we will mainly focus on the recent advances in the area of perovskites including: 1, new methods for growing the inorganic and hybrid perovskites; 2, the optical characteristic, morphology, and crystal structure of the as-synthesized perovskites; 3, anion/cation exchange/arrangement and crystal symmetric/asymmetric; 4, the stability of perovskites in different environments; 5, fabrication of optoelectronic devices including photodetector, solar cells, laser diodes, and light-emitting diodes. We also welcome the theoretical works calculated by DFT or Comsol, by such we can deeply understand the basic physical and chemical mechanisms within the material preparations and device performances.

All interested researchers are kindly invited to contribute to this Special Issue with their original research articles, short communications, and review articles. Please note that all submitted papers must be within the general scope of the Symmetry journal.

Dr. Longxing Su
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. Symmetry is an international peer-reviewed open access monthly 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 2400 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

  • inorganic perovskites
  • inorganic-organic hybrid perovskites
  • characterizations
  • lattice symmetric/asymmetric
  • stability
  • simulations/DFT calculations
  • photodetectors
  • solar cells
  • laser diodes
  • light-emitting diodes

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Published Papers (2 papers)

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Research

15 pages, 15136 KiB  
Article
Enhanced Removal of Acid Orange 7 onto Layered Interleaved Symmetrical 3D Flower-like CeO2 with Y(III) Doping
by Yaohui Xu, Yong Li, Liangjuan Gao and Zhao Ding
Symmetry 2025, 17(2), 224; https://doi.org/10.3390/sym17020224 - 4 Feb 2025
Viewed by 477
Abstract
CeO2 has a potential application in the purification of organic dye wastewater because of the abundant oxygen vacancy (VO) defects in its crystals. In this study, a cubic CeO2 microsphere with layered interleaved symmetrical 3D flower-like morphology was synthesized, [...] Read more.
CeO2 has a potential application in the purification of organic dye wastewater because of the abundant oxygen vacancy (VO) defects in its crystals. In this study, a cubic CeO2 microsphere with layered interleaved symmetrical 3D flower-like morphology was synthesized, and its adsorption capacity for acid orange 7 (AO7) was further enhanced by Y doping. The impact of varying amounts of Y ions on the phase composition, lattice parameters, and morphology of the product was investigated, revealing that 4 mol.% was determined as the doping level limit of Y ions in CeO2 crystals. XPS, Raman, and H2−TPR techniques were employed to compare surface species changes before and after 4 mol.% Y doping in the CeO2 crystals, including O−Ce(III), O−Ce(IV), O−Y(III), and VO correlation, yielding a rough quantitative assessment of these species. The 4 mol.% Y-doped CeO2 (2.0 g/L) demonstrated the highest removal rate for 20 mg/L of AO7 dye within just 20 min to reach adsorption–desorption equilibrium, half the time required by undoped CeO2, achieving an impressive adsorption rate of 94.6%, compared to only 69.5% for undoped CeO2 at 20 min. The adsorption capacity of undoped CeO2 was enhanced by 19.05% through the doping of 4 mol.% Y, achieving a value of 16.56 mg/L. The feasibility of enhancing the adsorption capacity of CeO2 by Y doping provides a reference for the application of CeO2 and other metal oxides. Full article
(This article belongs to the Special Issue Advances in Perovskites: Growth, Characterization and Optoelectronic Devices)
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10 pages, 3227 KiB  
Article
Growth of a Sub-Centimeter-Sized CsPbBr3 Bulk Single Crystal Using an Anti-Solvent Precipitation Method
by Longxing Su
Symmetry 2024, 16(3), 332; https://doi.org/10.3390/sym16030332 - 9 Mar 2024
Cited by 6 | Viewed by 2078
Abstract
A facile and low-cost strategy to fabricate CsPbBr3 single crystals is essential for developing perovskite optoelectronic devices. Herein, we have presented a room temperature anti-solvent precipitate method for growing sub-centimeter-sized CsPbBr3 single crystals. The as-prepared CsPbBr3 single crystal has an [...] Read more.
A facile and low-cost strategy to fabricate CsPbBr3 single crystals is essential for developing perovskite optoelectronic devices. Herein, we have presented a room temperature anti-solvent precipitate method for growing sub-centimeter-sized CsPbBr3 single crystals. The as-prepared CsPbBr3 single crystal has an orthorhombic structure, and phase transition occurs as the measured temperature increases. The as-grown CsPbBr3 single crystal also shows abundant surface morphologies including footsteps, precipitated crystals, cracks, and pits. Subsequently, a metal–semiconductor–metal (MSM)-structured photodetector was fabricated based on the CsPbBr3 single crystal. Under 525 nm green light illumination, the photodetector exhibits an obvious response and the photocurrent linearly increases with the increase in the light intensity. The rise time of the photodetector increases from 0.82 s to 2.19 s as the light intensity is enhanced from 15 mW/cm2 to 160 mW/cm2, indicating that more time is required to reach to a stable photocurrent. However, the decay time is as fast as ~0.82 ms, irrelevant of the light intensity. The photocurrent, under continuous light illumination, was further studied and this indicates that a stronger light intensity can accelerate the attenuation of the device. Full article
(This article belongs to the Special Issue Advances in Perovskites: Growth, Characterization and Optoelectronic Devices)
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