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Nanomaterials
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Low-Dimensional Perovskites: From Materials Design to Optoelectronic Devices
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Low-Dimensional Perovskites: From Materials Design to Optoelectronic Devices

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

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 15002

Special Issue Editor

Dr. Luisa De Marco

E-Mail Website
Guest Editor
CNR NANOTEC Institute of Nanotechnology, Via Monteroni, 73100 Lecce, Italy
Interests: 2D perovskites; optical and photonic properties; perovskite nanoplatelets

Special Issue Information

Dear Colleagues,

Hybrid organic–inorganic metal halide perovskites are at the forefront of research trends in optoelectronics thanks to their outstanding photophysical properties. These semiconductors have triggered advances in photovoltaics and offer opportunities in other applications, such as photodetectors, light-emitting diodes, and photonic devices with advanced functionalities.

Low-dimensional perovskites, in particular, are characterized by their great versatility because their structural and optical properties can be tailored by controlling their size and the nature of organic ligands. Moreover, their electronic confinement results in stable excitons at room temperature with exceptionally large exciton binding energy.

This Special Issue of Nanomaterials aims to publish original research papers and review articles focusing on the synthesis and application of optoelectronic devices of low-dimensional perovskites in the form of polycrystalline films, single crystals, or nanocrystals. Recent advances in synthetic approaches for the preparation of perovskites with different stoichiometries, composition, or shapes will be covered, as well as innovative or improved applications in devices, including photovoltaics, LEDs, lasers, and detectors.

Dr. Luisa De Marco
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

  • hybrid organic–inorganic perovskite
  • excitons
  • 2D perovskites
  • multiple quantum wells
  • photoluminescence
  • optoelectronics
  • layered perovskites
  • perovskite quantum dots
  • perovskite nanoplatelets

Published Papers (4 papers)

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Research

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9 pages, 2413 KiB  
Article
Improved Photostability in Fluorinated 2D Perovskite Single Crystals
by Annalisa Coriolano, Laura Polimeno, Milena De Giorgi, Francesco Todisco, Rosanna Mastria, Vincenzo Ardizzone, Lorenzo Dominici, Dario Ballarini, Aurora Rizzo, Giuseppe Gigli, Daniele Sanvitto and Luisa De Marco
Nanomaterials 2021, 11(2), 465; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11020465 - 11 Feb 2021
Cited by 8 | Viewed by 3300
Abstract
Hybrid organic-inorganic perovskites are very promising semiconductors for many optoelectronic applications, although their extensive use is limited by their poor stability under environmental conditions. In this work, we synthesize two-dimensional perovskite single crystals and investigate their optical and structural evolution under continuous light [...] Read more.
Hybrid organic-inorganic perovskites are very promising semiconductors for many optoelectronic applications, although their extensive use is limited by their poor stability under environmental conditions. In this work, we synthesize two-dimensional perovskite single crystals and investigate their optical and structural evolution under continuous light irradiation. We found that the hydrophobic nature of the fluorinated component, together with the absence of grain boundary defects, lead to improved material stability thanks to the creation of a robust barrier that preserve the crystalline structure, hindering photo-degradation processes usually promoted by oxygen and moisture. Full article
(This article belongs to the Special Issue Low-Dimensional Perovskites: From Materials Design to Optoelectronic Devices)
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12 pages, 5365 KiB  
Article
Photostable and Uniform CH3NH3PbI3 Perovskite Film Prepared via Stoichiometric Modification and Solvent Engineering
by Daocheng Hong, Mingyi Xie and Yuxi Tian
Nanomaterials 2021, 11(2), 405; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11020405 - 05 Feb 2021
Cited by 5 | Viewed by 2224
Abstract
Solution-processed organometal halide perovskites (OMHPs) have been widely used in optoelectronic devices, and have exhibited brilliant performance. One of their generally recognized advantages is their easy fabrication procedure. However, such a procedure also brings uncertainty about the opto-electric properties of the final samples [...] Read more.
Solution-processed organometal halide perovskites (OMHPs) have been widely used in optoelectronic devices, and have exhibited brilliant performance. One of their generally recognized advantages is their easy fabrication procedure. However, such a procedure also brings uncertainty about the opto-electric properties of the final samples and devices, including morphology, stability, coverage ratio, and defect concentration. Normally, one needs to find a balanced condition, because there is a competitive relation between these parameters. In this work, we fabricated CH3NH3PbI3 films by carefully changing the ratio of the PbI2 to CH3NH3I, and found that the stoichiometric and solvent engineering not only determined the photoluminescence efficiency and defects in the materials, but also affected the photostability, morphology, and coverage ratio. Combining solvent engineering and the substitution of PbI2 by Pb(Ac)2, we obtained an optimized fabrication condition, providing uniform CH3NH3PbI3 films with both high photoluminescence efficiency and high photostability under either I-rich or Pb-rich conditions. These results provide an optimized fabrication procedure for CH3NH3PbI3 and other OMHP films, which is crucial for the performance of perovskite-based solar cells and light emitting devices. Full article
(This article belongs to the Special Issue Low-Dimensional Perovskites: From Materials Design to Optoelectronic Devices)
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14 pages, 3905 KiB  
Article
Photo-Induced Black Phase Stabilization of CsPbI3 QDs Films
by Eider A. Erazo, H.E. Sánchez-Godoy, Andrés F. Gualdrón-Reyes, Sofia Masi and Iván Mora-Seró
Nanomaterials 2020, 10(8), 1586; https://0-doi-org.brum.beds.ac.uk/10.3390/nano10081586 - 12 Aug 2020
Cited by 9 | Viewed by 4196
Abstract
α-CsPbI3 quantum dots (QDs) show outstanding photoelectrical properties that had been harnessed in the fabrication of perovskite QDs solar cells. Nevertheless, the stabilization of the CsPbI3 perovskite cubic phase remains a challenge due to its own thermodynamic and the presence of [...] Read more.
α-CsPbI3 quantum dots (QDs) show outstanding photoelectrical properties that had been harnessed in the fabrication of perovskite QDs solar cells. Nevertheless, the stabilization of the CsPbI3 perovskite cubic phase remains a challenge due to its own thermodynamic and the presence of surface defects. Herein, we report the optimization of the CsPbI3 QDs solar cells, by monitoring the structure, the morphology and the optoelectronic properties after a precise treatment, consisting of the conventional solvent washing with a time limited ultraviolet (UV) exposure combination, during the layer-by-layer deposition. The UV treatment compensates the defects coming from the essential but deleterious washing treatment. The material is stable for 200 h and the PCE improved by the 25% compared with that of the device without UV treatment. The photo-enhanced ion mobility mechanism is discussed as the main process for the CsPbI3 QDs and solar cell stability. Full article
(This article belongs to the Special Issue Low-Dimensional Perovskites: From Materials Design to Optoelectronic Devices)
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Review

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23 pages, 3167 KiB  
Review
Lead-Free Metal Halide Perovskites for Hydrogen Evolution from Aqueous Solutions
by Vincenza Armenise, Silvia Colella, Francesco Fracassi and Andrea Listorti
Nanomaterials 2021, 11(2), 433; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11020433 - 09 Feb 2021
Cited by 21 | Viewed by 4614
Abstract
Metal halide perovskites (MHPs) exploitation represents the next big frontier in photovoltaic technologies. However, the extraordinary optoelectronic properties of these materials also call for alternative utilizations, such as in solar-driven photocatalysis, to better address the big challenges ahead for eco-sustainable human activities. In [...] Read more.
Metal halide perovskites (MHPs) exploitation represents the next big frontier in photovoltaic technologies. However, the extraordinary optoelectronic properties of these materials also call for alternative utilizations, such as in solar-driven photocatalysis, to better address the big challenges ahead for eco-sustainable human activities. In this contest the recent reports on MHPs structures, especially those stable in aqueous solutions, suggest the exciting possibility for efficient solar-driven perovskite-based hydrogen (H2) production. In this minireview such works are critically analyzed and classified according to their mechanism and working conditions. We focus on lead-free materials, because of the environmental issue represented by lead containing material, especially if exploited in aqueous medium, thus it is important to avoid its presence from the technology take-off. Particular emphasis is dedicated to the materials composition/structure impacting on this catalytic process. The rationalization of the distinctive traits characterizing MHPs-based H2 production could assist the future expansion of the field, supporting the path towards a new class of light-driven catalysts working in aqueous environments. Full article
(This article belongs to the Special Issue Low-Dimensional Perovskites: From Materials Design to Optoelectronic Devices)
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