Enhancing the electronic dimensionality of hybrid organic-inorganic frameworks by hydrogen bonded molecular cations

Fadwa El-Mellouhi, Mohamed Madjet, Golibjon Berdiyorov, El Tayeb Bentria, Sergey Rashkeev, Sabre Kais, Akinlolu Akande, Carlo Motta, Stefano Sanvito, Fahhad Alharbi

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Abstract

Transition-metal oxides with pyroxene structure, such as alkali-metal metavanadates, are known for their good chemical stability and have been used accordingly in many applications. In this work, we explore the possibility of enhancing the carrier transport and optoelectronic properties of hybrid inorganic-organic metavanadates MVO3 by introducing molecular cations. The hydrogen bonded molecular cations are found to enhance the electronic effective dimensionality of the system. This is related to the connectivity of the atomic orbitals to form new electron and hole transport channels. For the materials considered here, these channels are formed by hydrogen bonding that, besides enhancing the stability, results in enhanced macroscopic electronic transport and enhanced photo-generated carriers relaxation time. Our study indicates that the electronic dimensionality of the hybrid metavanadates could exceed their subnanometer structural dimensionality which is a desirable feature for improving their optoelectronic properties. This concept can be generalized to a wider class of hybrid organic-inorganic frameworks.

Original languageEnglish
Pages (from-to)1187-1196
Number of pages10
JournalMaterials Horizons
Volume6
Issue number6
DOIs
Publication statusPublished - 1 Jul 2019

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ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Process Chemistry and Technology
  • Electrical and Electronic Engineering

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