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Nanomaterials
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Photofunctional Nanomaterials and Nanostructures
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Photofunctional Nanomaterials and Nanostructures

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

Deadline for manuscript submissions: 25 September 2024 | Viewed by 2609

Special Issue Editor

Dr. Zhixing Gan

E-Mail Website1 Website2
Guest Editor
Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information/School of Artificial Intelligence, Nanjing Normal University, Nanjing 210023, China
Interests: photophysics, photoluminescence, and photothermal effect of emerging nanomaterials, such as carbon nanomaterials, graphene, 2D materials, and hailde perovskites
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Photofunctional nanomaterials and nanostructures that can convert and utilize photons in diverse forms have profound meanings, from fundamental understandings to applications. Thus, photofunctional nanomaterials and nanostructures have stimulated trans-disciplinary interests in physics, chemistry, material science, biology, photons, and engineering, and stimulated scientific breakthroughs in photovoltaics, photolithography, photoelectronics, photocatalysis, photobiology and phototherapy, photosynthesis, and optical sensing. Recently, photofunctional materials and photon conversion, with their unique appeal, are attracting an increasing number of researchers to promote the development of this field.

Although there are rapid advancements in photofunctional nanomaterials and nanostructures, there is still plenty of room to further improve their performances by enhancing fundamental knowledge. This Special Issue aims to focus on progress and advances in the design, synthesis, photophysics, photochemistry, and applications of photoluminescent, photothermal, photovoltaic, photocatalytic, and photoresponsive nanomaterials. Research on light–matter interactions, photolithography, laser fabrication, optical metamaterials, nonlinear optics, light-induced structural transformation, and ultrafast carrier dynamics is also included. As such, we welcome contributions that address, but are not limited to, the following themes:

  • Design and synthesis of novel photoluminescent, photothermal, photovoltaic, photocatalytic, and photoresponsive nanomaterials;
  • Applications of photofunctional nanomaterials in optoelectronics, energy, and biomedicine, such as solar cells, light-emitting diodes, photodetectors, photonic synapses, nano/micro-lasers, photonic integration, optical sensing, bioimaging, biosensing, phototherapy, etc.;
  • Fundamental photophysics, photochemistry, and ultrafast carrier dynamics underlying photon conversion and utilization;
  • Interactions of photofunctional nanomaterials with metamaterials/photonic crystals/surface plasmonics/optical cavities;
  • Laser fabrication of photofunctional nanomaterials and nanostructures.

Dr. Zhixing Gan
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

  • photofunctional nanomaterials and nanostructures
  • photon conversion
  • photoelectronics
  • photovoltaic
  • photocatalysis
  • photoluminescence
  • biosensing

Related Special Issue

Published Papers (3 papers)

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Research

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9 pages, 4093 KiB  
Article
Hydrophobic and Luminescent Polydimethylsiloxane PDMS-Y2O3:Eu3+ Coating for Power Enhancement and UV Protection of Si Solar Cells
by Darya Goponenko, Kamila Zhumanova, Sabina Shamarova, Zhuldyz Yelzhanova, Annie Ng and Timur Sh. Atabaev
Nanomaterials 2024, 14(8), 674; https://doi.org/10.3390/nano14080674 - 12 Apr 2024
Viewed by 556
Abstract
Solar cells have been developed as a highly efficient source of alternative energy, collecting photons from sunlight and turning them into electricity. On the other hand, ultraviolet (UV) radiation has a substantial impact on solar cells by damaging their active layers and, as [...] Read more.
Solar cells have been developed as a highly efficient source of alternative energy, collecting photons from sunlight and turning them into electricity. On the other hand, ultraviolet (UV) radiation has a substantial impact on solar cells by damaging their active layers and, as a result, lowering their efficiency. Potential solutions include the blocking of UV light (which can reduce the power output of solar cells) or converting UV photons into visible light using down-conversion optical materials. In this work, we propose a novel hydrophobic coating based on a polydimethylsiloxane (PDMS) layer with embedded red emitting Y2O3:Eu3+ (quantum yield = 78.3%) particles for UV radiation screening and conversion purposes. The favorable features of the PDMS-Y2O3:Eu3+ coating were examined using commercially available polycrystalline silicon solar cells, resulting in a notable increase in the power conversion efficiency (PCE) by ~9.23%. The chemical and UV stability of the developed coatings were assessed by exposing them to various chemical conditions and UV irradiation. It was found that the developed coating can endure tough environmental conditions, making it potentially useful as a UV-protective, water-repellent, and efficiency-enhancing coating for solar cells. Full article
(This article belongs to the Special Issue Photofunctional Nanomaterials and Nanostructures)
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18 pages, 9610 KiB  
Article
Dual-Channel Switchable Metasurface Filters for Compact Spectral Imaging with Deep Compressive Reconstruction
by Chang Wang, Xinyu Liu, Yang Zhang, Yan Sun, Zeqing Yu and Zhenrong Zheng
Nanomaterials 2023, 13(21), 2854; https://doi.org/10.3390/nano13212854 - 27 Oct 2023
Viewed by 1136
Abstract
Spectral imaging technology, which aims to capture images across multiple spectral channels and create a spectral data cube, has been widely utilized in various fields. However, conventional spectral imaging systems face challenges, such as slow acquisition speed and large size. The rapid development [...] Read more.
Spectral imaging technology, which aims to capture images across multiple spectral channels and create a spectral data cube, has been widely utilized in various fields. However, conventional spectral imaging systems face challenges, such as slow acquisition speed and large size. The rapid development of optical metasurfaces, capable of manipulating light fields versatilely and miniaturizing optical components into ultrathin planar devices, offers a promising solution for compact hyperspectral imaging (HSI). This study proposes a compact snapshot compressive spectral imaging (SCSI) system by leveraging the spectral modulations of metasurfaces with dual-channel switchable metasurface filters and employing a deep-learning-based reconstruction algorithm. To achieve compactness, the proposed system integrates dual-channel switchable metasurface filters using twisted nematic liquid crystals (TNLCs) and anisotropic titanium dioxide (TiO2) nanostructures. These thin metasurface filters are closely attached to the image sensor, resulting in a compact system. The TNLCs possess a broadband linear polarization conversion ability, enabling the rapid switching of the incidence polarization state between x-polarization and y-polarization by applying different voltages. This polarization conversion facilitates the generation of two groups of transmittance spectra for wavelength-encoding, providing richer information for spectral data cube reconstruction compared to that of other snapshot compressive spectral imaging techniques. In addition, instead of employing classic iterative compressive sensing (CS) algorithms, an end-to-end residual neural network (ResNet) is utilized to reconstruct the spectral data cube. This neural network leverages the 2-frame snapshot measurements of orthogonal polarization channels. The proposed hyperspectral imaging technology demonstrates superior reconstruction quality and speed compared to those of the traditional compressive hyperspectral image recovery methods. As a result, it is expected that this technology will have substantial implications in various domains, including but not limited to object detection, face recognition, food safety, biomedical imaging, agriculture surveillance, and so on. Full article
(This article belongs to the Special Issue Photofunctional Nanomaterials and Nanostructures)
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Review

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13 pages, 2367 KiB  
Review
Research Progress on Rashba Effect in Two-Dimensional Organic–Inorganic Hybrid Lead Halide Perovskites
by Junhong Guo, Jinlei Zhang, Yunsong Di and Zhixing Gan
Nanomaterials 2024, 14(8), 683; https://doi.org/10.3390/nano14080683 - 16 Apr 2024
Viewed by 589
Abstract
The Rashba effect appears in the semiconductors with an inversion–asymmetric structure and strong spin-orbit coupling, which splits the spin-degenerated band into two sub-bands with opposite spin states. The Rashba effect can not only be used to regulate carrier relaxations, thereby improving the performance [...] Read more.
The Rashba effect appears in the semiconductors with an inversion–asymmetric structure and strong spin-orbit coupling, which splits the spin-degenerated band into two sub-bands with opposite spin states. The Rashba effect can not only be used to regulate carrier relaxations, thereby improving the performance of photoelectric devices, but also used to expand the applications of semiconductors in spintronics. In this mini-review, recent research progress on the Rashba effect of two-dimensional (2D) organic–inorganic hybrid perovskites is summarized. The origin and magnitude of Rashba spin splitting, layer-dependent Rashba band splitting of 2D perovskites, the Rashba effect in 2D perovskite quantum dots, a 2D/3D perovskite composite, and 2D-perovskites-based van der Waals heterostructures are discussed. Moreover, applications of the 2D Rashba effect in circularly polarized light detection are reviewed. Finally, future research to modulate the Rashba strength in 2D perovskites is prospected, which is conceived to promote the optoelectronic and spintronic applications of 2D perovskites. Full article
(This article belongs to the Special Issue Photofunctional Nanomaterials and Nanostructures)
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