Structures and Coatings for High-Performance Photonics, Optoelectronics and Photovoltaics

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Thin Films".

Deadline for manuscript submissions: 20 November 2026 | Viewed by 1151

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Guest Editor
College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
Interests: ultrafast optics; optoelectronics

Special Issue Information

Dear Colleagues,

We are pleased to invite you to submit your research to the Special Issue “Structures and Coatings for High-Performance Photonics, Optoelectronics and Photovoltaics.”

Advanced micro- and nanostructures, together with functional coatings, play a critical role in modern photonics, optoelectronics, and photovoltaic technologies. Carefully designed structures and coatings enable precise control of light–matter interactions, leading to enhanced optical absorption and emission, reduced optical losses, improved carrier management, and increased device efficiency. As a result, they have been widely applied in high-performance lasers, light-emitting diodes, photodetectors, optical sensors, and solar cells.

With the continuous demand for higher efficiency, higher power density, and improved operational stability, these structures and coatings are facing increasing challenges. Issues such as optical and thermal losses, material degradation, interfacial instability, and environmental effects can significantly limit device performance and long-term reliability. Addressing these challenges requires the development of novel materials, innovative structural designs, advanced fabrication techniques, and a deeper understanding of underlying physical mechanisms.

This Special Issue aims to present recent advances in the design, fabrication, characterization, and application of structures and coatings for photonics, optoelectronics, and photovoltaic devices. We welcome original research articles and review papers covering, but not limited to, nanophotonic and metamaterial structures, optical and functional coatings, light management strategies, interface engineering, and reliability and failure mechanisms.

Dr. Hao Zhang
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Coatings 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 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

  • optical coatings
  • photoelectric coatings
  • photonics
  • optoelectronics
  • photovoltaics
  • optics

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Published Papers (2 papers)

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Research

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12 pages, 3520 KB  
Article
Subwavelength Mode (De)multiplexer Based on Sodium-Assisted Hybrid Plasmonics
by Yuyang Zhuang, Xintong Li, Zhiyuan Sun, Weixi Lu and Hao Zhang
Coatings 2026, 16(7), 751; https://doi.org/10.3390/coatings16070751 - 25 Jun 2026
Viewed by 305
Abstract
To enable high-density multimode photonic integration, we propose and numerically demonstrate a plasmonic hybrid mode division multiplexer–demultiplexer with a sodium coating on a silicon-on-insulator (SOI) platform. The device enables simultaneous mode division multiplexing (MDM) and demultiplexing of the transverse magnetic modes TM0 [...] Read more.
To enable high-density multimode photonic integration, we propose and numerically demonstrate a plasmonic hybrid mode division multiplexer–demultiplexer with a sodium coating on a silicon-on-insulator (SOI) platform. The device enables simultaneous mode division multiplexing (MDM) and demultiplexing of the transverse magnetic modes TM0 and TM1 at λ = 1550 nm. Full-wave three-dimensional finite-difference time-domain (3D-FDTD) simulations confirm an insertion loss of 1.2 dB, an inter-modal crosstalk of −20.3 dB, and a compact footprint of 5 μm × 16 μm. Compared with representative SOI-based mode-selective couplers with longer conversion regions, the proposed design substantially reduces the coupling length and device footprint. This numerical study provides a potential route toward compact, high-density multimode photonic integration based on sodium-assisted hybrid plasmonics. Full article
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Review

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20 pages, 4695 KB  
Review
Dual-Mechanism Synergistic Regulation and Performance Optimization of Lead Sulfide Quantum Dot Coatings in Optoelectronic Memristors
by Ru Li, Xinhe Jiang, Xuhao Zhao, Huiyun Zhang, Qingyu Xu and Guangyu Wang
Coatings 2026, 16(6), 715; https://doi.org/10.3390/coatings16060715 - 15 Jun 2026
Viewed by 508
Abstract
Lead sulfide quantum dots (PbS QDs), as a functional-layer coating, enable non-volatile integration and neuromorphic computing in memristive structures to address the von Neumann bottleneck. Herein, the dual-interface mechanism of PbS QDs in the memristor film structure is reviewed. First, the local electric [...] Read more.
Lead sulfide quantum dots (PbS QDs), as a functional-layer coating, enable non-volatile integration and neuromorphic computing in memristive structures to address the von Neumann bottleneck. Herein, the dual-interface mechanism of PbS QDs in the memristor film structure is reviewed. First, the local electric field enhancement effect generates tip electrode-like structures in the coating film through QD-mediated spatial charge gradients, thereby enabling precise control over the nucleation and growth of conductive filaments (CFs). As a result, the consistency of switching voltages and the thermal stability at elevated temperatures are significantly improved. Conversely, the anion reservoir effect exploits surface dangling bonds on QDs to efficiently capture anions from the dielectric layer, thereby synergistically regulating vacancy migration kinetics. This process enables zero-initialization behavior and ultra-low-power operation. In addition, the spatial distribution design and density modulation of QDs further reinforce both mechanisms. The structural optimization of QD/dielectric interface engineering can simultaneously improve cycling endurance and resistive switching uniformity. Furthermore, modification of QD surface chemistry through ligand decoration and passivation suppresses the stochasticity of ionic diffusion while improving the linearity of synaptic weight updates. This interfacial engineering strategy utilizing QDs as coating films advances the development of high-performance photonic–electronic systems for memory–computing convergence. Full article
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