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Progress in Inorganic Halide Perovskites
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Progress in Inorganic Halide Perovskites

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "D1: Advanced Energy Materials".

Deadline for manuscript submissions: closed (20 December 2020) | Viewed by 12684

Special Issue Editor

Prof. Dr. Anna Vinattieri

E-Mail Website
Guest Editor
Department Physics and Astronomy, University of Florence, Via G.Sansone 1, 50019 Sesto Fiorentino, Italy
Interests: high resolution optical spectroscopy; semiconductor nanostructures; excitons; photonics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the last decade, a significant effort of research in physics and chemistry has been directed at the development and study of halide perovskites. These materials are definitely one of the most promising classes of semiconductors for applications in the field of renewables, photonics, and high radiation detection. Most of the recent literature focuses on hybrid organic–inorganic perovskites which have already demonstrated impressive performances in energy-harvesting applications. Nevertheless, hybrid perovskites suffer from poor material stability, and in the last few years, research has moved toward exploring the potentialities of their more stable inorganic counterparts.  

This Special Issue will provide a timely opportunity to present recent progress in the field of inorganic halide perovskites with a focus on innovative devices, in addition to solar cells, as LED, lasers, gas sensors, radiation detectors, etc. Contributions dedicated to advancement in the field of high-performance devices and fundamental research are welcome. In particular, we invite submission of papers addressing issues related to material synthesis, with a focus on ecofriendly perovskites, state-of-the-art morphological, structural, and optical studies, nonlinear optical properties, transport properties, etc.

Prof. Dr. Anna Vinattieri
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. Energies 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 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

  • lead-free perovskites
  • material stability
  • excitons
  • nonlinear optics
  • photovoltaic cells
  • sensors
  • photonics
  • detectors

Published Papers (4 papers)

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Research

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14 pages, 1758 KiB  
Article
CsPbBr3 Nanocrystals-Based Polymer Nanocomposite Films: Effect of Polymer on Spectroscopic Properties and Moisture Tolerance
by Elisabetta Fanizza, Roberto Schingo, Annamaria Panniello, Angelica Maria Lanza, Nicoletta Depalo, Angela Agostiano, Maria Lucia Curri and Marinella Striccoli
Energies 2020, 13(24), 6730; https://doi.org/10.3390/en13246730 - 20 Dec 2020
Cited by 6 | Viewed by 2678
Abstract
Metal halide perovskites nanocrystals (NCs) represent an emerging class of materials that find increasing application in optoelectronic and photovoltaic devices, thanks to their intriguing optical properties, including high absorption coefficient, high fluorescence quantum yield (PL QY) and fast charge carrier separation. However, their [...] Read more.
Metal halide perovskites nanocrystals (NCs) represent an emerging class of materials that find increasing application in optoelectronic and photovoltaic devices, thanks to their intriguing optical properties, including high absorption coefficient, high fluorescence quantum yield (PL QY) and fast charge carrier separation. However, their opening to market is still hindered by their limited reliability, due to an intrinsic structural instability and degradation of their photophysical properties upon air, moisture, and light exposure. The incorporation of perovskite NCs in polymer matrix can limit some of the NC instability issues, with advantages in film processability, device fabrication and mechanical performance, being also useful for fundamental studies. In this regard, here, nanocomposites based on polymethylmethacrylate or polystyrene embedding all-inorganic CsPbBr3 NCs have been prepared and processed in the form of flexible free-standing films. A systematic spectrofluorimetric study, comprising steady state photoluminescence (PL), PL quantum yield (QY) and PL decay of the free-standing films before and after exposure to relative humidity condition (RH% 85%, at 25 °C) is performed and discussed. Phase segregation phenomena, changes in NC passivation and recombination dynamics are evaluated as a function of polymer loading and its molecular structure and finally the efficacy of the polymer as moisture barrier investigated. Full article
(This article belongs to the Special Issue Progress in Inorganic Halide Perovskites)
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12 pages, 1623 KiB  
Article
Polymer/Inorganic Hole Transport Layer for Low-Temperature-Processed Perovskite Solar Cells
by Neda Irannejad, Narges Yaghoobi Nia, Siavash Adhami, Enrico Lamanna, Behzad Rezaei and Aldo Di Carlo
Energies 2020, 13(8), 2059; https://doi.org/10.3390/en13082059 - 20 Apr 2020
Cited by 11 | Viewed by 3513
Abstract
In the search for improvements in perovskite solar cells (PSCs), several different aspects are currently being addressed, including an increase in the stability and a reduction in the hysteresis. Both are mainly achieved by improving the cell structure, employing new materials or novel [...] Read more.
In the search for improvements in perovskite solar cells (PSCs), several different aspects are currently being addressed, including an increase in the stability and a reduction in the hysteresis. Both are mainly achieved by improving the cell structure, employing new materials or novel cell arrangements. We introduce a hysteresis-free low-temperature planar PSC, composed of a poly(3-hexylthiophene) (P3HT)/CuSCN bilayer as a hole transport layer (HTL) and a mixed cation perovskite absorber. Proper adjustment of the precursor concentration and thickness of the HTL led to a homogeneous and dense HTL on the perovskite layer. This strategy not only eliminated the hysteresis of the photocurrent, but also permitted power conversion efficiencies exceeding 15.3%. The P3HT/CuSCN bilayer strategy markedly improved the life span and stability of the non-encapsulated PSCs under atmospheric conditions and accelerated thermal stress. The device retained more than 80% of its initial efficiency after 100 h (60% after 500 h) of continuous thermal stress under ambient conditions. The performance and durability of the PSCs employing a polymer/inorganic bilayer as the HTL are improved mainly due to restraining perovskite ions, metals, and halides migration, emphasizing the pivotal role that can be played by the interface in the perovskite-additive hole transport materials (HTM) stack. Full article
(This article belongs to the Special Issue Progress in Inorganic Halide Perovskites)
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14 pages, 3041 KiB  
Article
Electrically Active Defects in Polycrystalline and Single Crystal Metal Halide Perovskite
by Mara Bruzzi, Naomi Falsini, Nicola Calisi and Anna Vinattieri
Energies 2020, 13(7), 1643; https://doi.org/10.3390/en13071643 - 2 Apr 2020
Cited by 14 | Viewed by 2396
Abstract
We studied electrically active defects in CsPbBr3 polycrystalline films and single crystals samples using the thermally stimulated currents (TSC) technique in the temperature range 100–400 K. Below room temperature, both polycrystalline and single-crystals TSC emission is composed by a quasi-continuum of energy [...] Read more.
We studied electrically active defects in CsPbBr3 polycrystalline films and single crystals samples using the thermally stimulated currents (TSC) technique in the temperature range 100–400 K. Below room temperature, both polycrystalline and single-crystals TSC emission is composed by a quasi-continuum of energy levels in the range 0.1–0.3 eV, and capture cross sections ~10−21 cm2. Above room temperature, TSC analysis reveals the presence of defect states in the range 0.40–0.52 eV only in polycrystalline samples, whereas these intermediate energy states are absent in TSC detected in single crystals. In polycrystalline films, the occupancy changes of an energy level at 0.45 eV strongly influences the room temperature photoconductivity, giving rise to slow transients due to defect passivation. In single-crystals, where intermediate energy states are absent, the photoconductivity response during illumination is almost stable and characterized by fast rise/decay times, a promising result for future applications of this material in photodetection and dosimetry. Full article
(This article belongs to the Special Issue Progress in Inorganic Halide Perovskites)
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Review

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28 pages, 6748 KiB  
Review
Halide Pb-Free Double–Perovskites: Ternary vs. Quaternary Stoichiometry
by Maurizia Palummo, Daniele Varsano, Eduardo Berríos, Koichi Yamashita and Giacomo Giorgi
Energies 2020, 13(14), 3516; https://doi.org/10.3390/en13143516 - 8 Jul 2020
Cited by 9 | Viewed by 3497
Abstract
In view of their applicability in optoelectronics, we review here the relevant structural, electronic, and optical features of the inorganic Pb-free halide perovskite class. In particular, after discussing the reasons that have motivated their introduction in opposition to their more widely investigated organic-inorganic [...] Read more.
In view of their applicability in optoelectronics, we review here the relevant structural, electronic, and optical features of the inorganic Pb-free halide perovskite class. In particular, after discussing the reasons that have motivated their introduction in opposition to their more widely investigated organic-inorganic counterparts, we highlight milestones already achieved in their synthesis and characterization and show how the use of ab initio ground and excited state methods is relevant in predicting their properties and in disclosing yet unsolved issues which characterize both ternary and quaternary stoichiometry double-perovskites. Full article
(This article belongs to the Special Issue Progress in Inorganic Halide Perovskites)
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