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Nanomaterials
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Nanostructured Perovskites—Material, Physics and Applications
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Nanostructured Perovskites—Material, Physics and Applications

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: closed (10 May 2022) | Viewed by 2971

Special Issue Editor

Dr. Bo Wu

E-Mail Website
Guest Editor
South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
Interests: perovskite PV/light emitting materials；2D materials；quantum dots；etc

Special Issue Information

Dear Colleagues,

Perovskites have recently emerged as promising materials for many applications, ranging from solar cells to light-emitting diodes, lasers, photodetectors, memristor, photocatalysis, etc. Delicate material engineering at the nanoscale may be the key to further boosting the efficiencies of perovskite-based devices. This may include nanostructure size control, surface passivation, defect engineering, band alignment, etc. Concomitantly, understanding the physics of perovskites at the nanoscale will be of paramount importance for further design of nanostructure and optimization of device performance. For example, how the electron and lattice/defects interact with the perovskite nanocrystal/quantum dot is critical for electron transport and recombination, which is yet still elusive. 

This Special Issue of Nanomaterials will attempt to cover the most recent advances in “Nanostructured Perovskites—Material, Physics and Applications”. We welcome the submission of manuscripts that focus on the fabrication of perovskite nanostructures, their physics, as well as novel applications based on them. 

Dr. Bo Wu
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

  • perovskite
  • nanostructure
  • applications

Published Papers (1 paper)

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Research

13 pages, 3741 KiB  
Article
Dimension-Dependent Bandgap Narrowing and Metallization in Lead-Free Halide Perovskite Cs3Bi2X9 (X = I, Br, and Cl) under High Pressure
by Guangbiao Xiang, Yanwen Wu, Man Zhang, Chen Cheng, Jiancai Leng and Hong Ma
Nanomaterials 2021, 11(10), 2712; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11102712 - 14 Oct 2021
Cited by 13 | Viewed by 2669
Abstract
Low-toxicity, air-stable cesium bismuth iodide Cs3Bi2X9 (X = I, Br, and Cl) perovskites are gaining substantial attention owing to their excellent potential in photoelectric and photovoltaic applications. In this work, the lattice constants, band structures, density of states, [...] Read more.
Low-toxicity, air-stable cesium bismuth iodide Cs3Bi2X9 (X = I, Br, and Cl) perovskites are gaining substantial attention owing to their excellent potential in photoelectric and photovoltaic applications. In this work, the lattice constants, band structures, density of states, and optical properties of the Cs3Bi2X9 under high pressure perovskites are theoretically studied using the density functional theory. The calculated results show that the changes in the bandgap of the zero-dimensional Cs3Bi2I9, one-dimensional Cs3Bi2Cl9, and two-dimensional Cs3Bi2Br9 perovskites are 3.05, 1.95, and 2.39 eV under a pressure change from 0 to 40 GPa, respectively. Furthermore, it was found that the optimal bandgaps of the Shockley–Queisser theory for the Cs3Bi2I9, Cs3Bi2Br9, and Cs3Bi2Cl9 perovskites can be reached at 2–3, 21–26, and 25–29 GPa, respectively. The Cs3Bi2I9 perovskite was found to transform from a semiconductor into a metal at a pressure of 17.3 GPa. The lattice constants, unit-cell volume, and bandgaps of the Cs3Bi2X9 perovskites exhibit a strong dependence on dimension. Additionally, the Cs3Bi2X9 perovskites have large absorption coefficients in the visible region, and their absorption coefficients undergo a redshift with increasing pressure. The theoretical calculation results obtained in this work strengthen the fundamental understanding of the structures and bandgaps of Cs3Bi2X9 perovskites at high pressures, providing a theoretical support for the design of materials under high pressure. Full article
(This article belongs to the Special Issue Nanostructured Perovskites—Material, Physics and Applications)
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