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Related Concept Videos

Properties of Transition Metals02:58

Properties of Transition Metals

27.3K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
27.3K
Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

1.1K
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
1.1K

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Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
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Perovskitoids as Functional Materials.

Isaiah W Gilley1, Taylor E Wiggins1, Edward H Sargent1,2

  • 1Department of Chemistry, Northwestern University, 2145 Sheridan Rd, Evanston, Illinois 60208, United States.

Accounts of Chemical Research
|June 27, 2025
PubMed
Summary
This summary is machine-generated.

Perovskitoids, a class of hybrid halide materials, offer diverse structures and enhanced stability compared to perovskites. Their tunable bandgaps and varied connectivity make them promising for optoelectronics and improving perovskite solar cells.

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Area of Science:

  • Materials Science
  • Solid-State Chemistry
  • Optoelectronics

Background:

  • Hybrid Pb, Sn, and Ge halide synthesis has surged, yielding over 3000 structures since 2015, with perovskites dominating optoelectronics.
  • Non-perovskite materials, including face- and edge-sharing structures, often arise from perovskite synthesis but are underexplored.
  • Perovskitoids, defined by mixed corner-, edge-, and face-sharing octahedral connectivity, represent a promising subset of these non-perovskites.

Purpose of the Study:

  • To provide an overview of perovskitoid structures, properties, and applications, highlighting their relationship to perovskites.
  • To explore the impact of varied octahedral connectivity on perovskitoid bandgaps, luminescence, and stability.
  • To discuss strategies for enhancing perovskitoid optoelectronic properties and their potential to address perovskite material challenges.

Main Methods:

  • Structural analysis of perovskitoid crystal connectivity (corner-, edge-, and face-sharing octahedra).
  • Correlation of structural features with optoelectronic properties (bandgap, luminescence).
  • Review of existing applications and proposed strategies for future material development.

Main Results:

  • Perovskitoids exhibit greater structural diversity than perovskites due to mixed octahedral sharing.
  • Connectivity type significantly influences bandgaps, enabling tunability without halide mixing or dimensional reduction.
  • Perovskitoids demonstrate enhanced air, water, and thermal stability compared to perovskites.

Conclusions:

  • Perovskitoids are a distinct and promising class of materials with unique properties derived from their mixed octahedral connectivity.
  • Their tunable bandgaps and enhanced stability offer advantages over traditional perovskites for various optoelectronic applications.
  • Further research into perovskitoids, particularly those with high corner-sharing fractions, is crucial for unlocking their full potential.