Feature Papers in Inorganic Solid-State Chemistry 2026

A Special Issue of Inorganics (ISSN 2304-6740) belonging to the section "Inorganic Solid-State Chemistry".

Deadline for manuscript submissions: 31 December 2026 | Viewed by 6064

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Institut de Minéralogie, de Physique des Matériaux et Cosmologie (IMPMC), Sorbonne Université, UMR-CNRS 7590, 4 Place Jussieu, 75752 Paris, France
Interests: solid-state ionics; energy storage; lithium batteries; nanomaterials; thin films
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Department of Electrical and Computer Engineering and the Department of Chemical Engineering, Northeastern University, 440 DA, 360 Huntington Ave, Boston, MA 02115-5000, USA
Interests: magnetism and magnetic materials; ferrites; microwave materials and devices; magnetic nanoparticles; permanent magnet systems
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Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha 410082, China
Interests: low-dimensional materials; heterostructures; synthesis; first-principles calculations; electronic structure; clean energy conversion; catalytic performancev power-conversion efficiency; solar cells; water splitting

Special Issue Information

Dear Colleagues,

Inorganic solid-state chemistry is arguably a cornerstone of science and technology and includes the synthesis, characterization, and application of inorganic materials like ceramics, metals, and semiconductors. This field, which is based on crystallography, quantum mechanics, and thermodynamics, is essential for developing materials with tailored functionalities.

It investigates materials with unique electronic, magnetic, and optical properties, and this has led, for example, to the discovery of high-temperature superconductors, a subfield that continues to be of high interest for its technological and societal significance. Similarly, advances in magnetic materials have enormously impacted data storage devices.

Moreover, inorganic solid-state chemistry addresses major challenges like energy sustainability and environmental issues. For example, innovations in catalysts can yield more ecofriendly industrial processes, while new materials for solar cells and batteries can support renewable energy advancements.

This Special Issue seeks to exhibit some of the high-quality research in inorganic solid-state chemistry, with a focus on the synthesis, advanced characterization, and modern applications of inorganic materials. It will focus on recent advances in and innovative methods of investigating inorganic compounds, with an emphasis on their structural, spectroscopic, magnetic, and general physical properties.

As Inorganics reports on all aspects of inorganic chemistry, this collection aims to contribute to the journal's mission by publishing detailed experimental and theoretical results in this field. The scope of this Special Issue is balanced, addressing current research trends and technological advancements, and we are aiming for at least 10 articles, potentially leading to a book publication.

Suggested themes for submissions include, but are not limited to, the following:

  1. Synthesis and characterization of novel solid-state inorganic materials;
  2. Optical and electronic properties of inorganic solid-state materials (e.g., luminescence and conductivity);
  3. Magnetic and superconducting materials and their applications in data storage and quantum technology;
  4. Catalysis and reaction mechanisms;
  5. Environment and energy;
  6. Nanomaterials and nanotechnology.

We look forward to receiving your contributions.

Prof. Dr. Christian Julien
Prof. Dr. Vincent Harris
Prof. Dr. Weiqing Huang
Guest Editors

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. Inorganics 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 2200 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

  • inorganic solid-state chemistry
  • inorganic solid-state synthesis
  • inorganic solid-state characterization
  • inorganic solid-state properties
  • inorganic solid-state theory
  • inorganic solid-state applications

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Published Papers (5 papers)

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Research

16 pages, 2095 KB  
Article
Synthesis, Crystal Structure and Properties of Iron Bisdicyanamide (Fe[N(CN)2]2) and Iron Diammine Bisdicyanamide (Fe[NH3]2[N(CN)2]2)
by Laura Henrich, Aylin Koldemir, Jan Hempelmann, Jan van Leusen, Rainer Pöttgen, Andreas Houben, Richard Dronskowski and Egbert Figgemeier
Inorganics 2026, 14(8), 218; https://doi.org/10.3390/inorganics14080218 - 20 Aug 2026
Viewed by 383
Abstract
The phase-pure syntheses of Fe(dca)2 and Fe(dca)2(NH3)2 have enabled comprehensive investigation of their structural and magnetic properties. Fe(dca)2 crystallizes in the orthorhombic space group Pnnm, with Fe2+ ions octahedrally coordinated by six dca ligands, [...] Read more.
The phase-pure syntheses of Fe(dca)2 and Fe(dca)2(NH3)2 have enabled comprehensive investigation of their structural and magnetic properties. Fe(dca)2 crystallizes in the orthorhombic space group Pnnm, with Fe2+ ions octahedrally coordinated by six dca ligands, forming a rutile-like 3D network. Temperature-dependent structural analysis reveals minor distortions and a slight unit cell volume contraction (~2.5 Å3) from 300 K to 25 K. Fe(dca)2(NH3)2 crystallizes in the monoclinic space group P21/c, featuring two axial ammonia ligands and dca-bridged Fe2+ ions forming layers. Magnetic susceptibility measurements of Fe(dca)2 reveal a ferrimagnetic transition at TC = 19.1 K, confirmed by SQUID data, Mößbauer spectroscopic measurements and low-temperature neutron diffraction. A magnetic hysteresis at 5 K indicates long-range cooperative magnetic ordering. ATR-IR spectroscopic measurements support the structural models and confirm the chemical composition of both compounds. TGA shows the thermal decomposition of Fe(dca)2. Full article
(This article belongs to the Special Issue Feature Papers in Inorganic Solid-State Chemistry 2026)
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17 pages, 13642 KB  
Article
Single-Ru-Doped PtSe2 Monolayer with Superior Adsorption and Sensing Performance over Au for HCHO, C6H6, and Rn Monitoring: A First-Principles Investigation
by Fu Li, Kai Luo, Xin Qin and Hao Cui
Inorganics 2026, 14(8), 207; https://doi.org/10.3390/inorganics14080207 - 4 Aug 2026
Viewed by 427
Abstract
The long-term preservation of historical documents in archival environments is critically challenged by the accumulation of hazardous gases—formaldehyde (HCHO), benzene (C6H6), and radon (Rn)—which originate from collection materials and pose severe health risks to personnel. In this work, we [...] Read more.
The long-term preservation of historical documents in archival environments is critically challenged by the accumulation of hazardous gases—formaldehyde (HCHO), benzene (C6H6), and radon (Rn)—which originate from collection materials and pose severe health risks to personnel. In this work, we systematically investigate, via first-principles theory, the potential of Au- and Ru-doped PtSe2 monolayers as resistive-type gas sensors for the detection of these pollutants. Atomic-scale substitutional doping at the Se site is modeled to establish the doped PtSe2 configurations, and the structural stability, electronic properties, adsorption behavior, charge transfer characteristics, and recovery kinetics of the doped systems are comprehensively evaluated and compared. Our findings, through comprehensive comparison, reveal that Ru-PtSe2 outperforms its Au-doped counterpart across all key performance metrics, positioning it as a promising candidate for hazardous gas monitoring in archival environments. The key innovation of this work lies in the systematic comparative assessment of noble metal dopants on PtSe2 monolayers, identifying Ru as a superior choice to Au and providing a theoretical foundation for designing high-performance, recyclable 2D material-based gas sensors tailored for cultural heritage preservation applications. Full article
(This article belongs to the Special Issue Feature Papers in Inorganic Solid-State Chemistry 2026)
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16 pages, 2329 KB  
Article
A First-Principles Study of Copper-Deficient Layer and Its Effect in Chalcopyrite-Based Solar Cells: Carrier Dynamics Characteristics
by Qinmiao Chen, Yi Ni and Hongcun Yuan
Inorganics 2026, 14(5), 122; https://doi.org/10.3390/inorganics14050122 - 26 Apr 2026
Viewed by 1430
Abstract
CuIn5Se8 is reported as a remarkable copper-deficient layer that contains ordered vacancy compounds (OVCs) for high-efficiency chalcopyrite-based solar cells; however, the understanding of its carrier characteristics has remained limited. OVCs could naturally form on the surface of chalcopyrite absorber. In [...] Read more.
CuIn5Se8 is reported as a remarkable copper-deficient layer that contains ordered vacancy compounds (OVCs) for high-efficiency chalcopyrite-based solar cells; however, the understanding of its carrier characteristics has remained limited. OVCs could naturally form on the surface of chalcopyrite absorber. In this study, the carrier dynamics characteristics of OVCs were investigated by constructing a junction consisting of chalcopyrite absorber and CdS buffer layer. At first, the band structure of CuIn5Se8 was studied to determine the bandgap properties. Then, thermodynamic stability, defect formation energy, defects and carrier concentration, defect transition energy level of CuIn5Se8 and its Cd doping state (caused by CdS) were comparatively studied. The results suggest that Cd doping has different effects on the defect and carrier characteristics of OVCs with various chemical potentials. However, the OVC always remains n-type under the whole thermodynamically stable region, with contribution from the hallow-level InCu donor defect. Finally, the OVC’s carrier dynamics characteristics were assessed using the collected defect and carrier data. It is indicated that the OVC layer may contribute to the formation of a p-n homojunction in solar cells. Under selenium-rich conditions, the OVC layer increases the carrier density on the n-type side of p-n junction nearly 30-fold, which helps reduce the difference in carrier density and minority current density between two sides of the p-n junction. The conversion efficiency of the solar cell with OVC shows a 7.25% improvement when compared to the control. The distinct behavior of OVCs may serve as a valuable reference for the creation or improvement of a related functional film layer or device. Full article
(This article belongs to the Special Issue Feature Papers in Inorganic Solid-State Chemistry 2026)
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9 pages, 1551 KB  
Article
Photoluminescence of X-Ray-Generated Sm2+ in Co-Precipitated SrF2:Sm3+ Nanocrystals
by Z. Siti Rozaila, Siti Fairus Abdul Sani and Hans Riesen
Inorganics 2026, 14(4), 115; https://doi.org/10.3390/inorganics14040115 - 16 Apr 2026
Viewed by 1660
Abstract
We report on X-ray-induced Sm3+ → Sm2+ reduction in SrF2:Sm3+ nanocrystals of ~40 nm size synthesized via a co-precipitation method. Non-irradiated samples show characteristic Sm3+ f-f 4G5/26H5/2, 6H7/2 [...] Read more.
We report on X-ray-induced Sm3+ → Sm2+ reduction in SrF2:Sm3+ nanocrystals of ~40 nm size synthesized via a co-precipitation method. Non-irradiated samples show characteristic Sm3+ f-f 4G5/26H5/2, 6H7/2, 6H9/2, and 6H11/2 emissions, while X-irradiation induces intense low-temperature Sm2+ 5D07F1 emission and other Sm2+ lines. The evolution of Sm3+ and Sm2+ photoluminescence intensities with X-ray dose (0–300 Gy) follows first-order kinetics, consistent with a trapping–detrapping mechanism. Compared to CaF2:Sm3+, SrF2:Sm3+ exhibits faster Sm3+ reduction due to the higher X-ray absorption cross section of strontium compared to calcium for Cu-Kα (8 keV) radiation, highlighting its potential as a nanoscale X-ray storage phosphor. Full article
(This article belongs to the Special Issue Feature Papers in Inorganic Solid-State Chemistry 2026)
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14 pages, 3370 KB  
Article
Synthesis and Structural Characterization of Potentially Topologically Non-Trivial Zintl Phases ACaBi (A = K, Rb, Cs)
by Alexander Selverian and Svilen Bobev
Inorganics 2026, 14(3), 74; https://doi.org/10.3390/inorganics14030074 - 5 Mar 2026
Cited by 2 | Viewed by 1514
Abstract
For the first time, the ternary Zintl phases RbCaBi and CsCaBi have been synthesized and structurally characterized via single-crystal X-ray diffraction methods. These two compounds, alongside KCaBi, are confirmed to crystallize in a tetragonal crystal system with the space group P4/nmm [...] Read more.
For the first time, the ternary Zintl phases RbCaBi and CsCaBi have been synthesized and structurally characterized via single-crystal X-ray diffraction methods. These two compounds, alongside KCaBi, are confirmed to crystallize in a tetragonal crystal system with the space group P4/nmm (no. 129) with two formula units per cell. The lattice constants increase monotonically from a = 5.3812(10) Å and c = 8.410(3) Å for KCaBi, to a = 5.4139(7) Å and c = 8.6180(17) Å for RbCaBi, and to a = 5.4709(11) Å and c = 8.914(3) Å for CsCaBi. The crystal structure can be visualized as an array of square prisms formed of Bi atoms, which are centered by alkali metal atoms, while the Ca atoms fill tetrahedra formed of Bi atoms. There are no direct Bi–Bi interactions in the crystal structure; therefore, with full cation ordering present, the chemical bonding in the ACaBi compounds can be rationalized within the fully ionic approximation as A+Ca2+Bi3− (A = K, Rb, Cs). This suggests the opening of an (narrow) energy gap between the valence and conduction bands, i.e., semiconducting behavior. Full article
(This article belongs to the Special Issue Feature Papers in Inorganic Solid-State Chemistry 2026)
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