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<p>Circumventing the limitations of lattice-mismatch factors in usual heterostructured thin films of metal-organic frameworks (MOFs), recent studies have achieved exotic electronic heterostructures for possible next-generation thin film device applications. This study reports a robust strategy to significantly enhance the conductivity in thin films of 4,4′-azobenzene dicarboxylate (ADA) linker-based 1D Cu-MOF while also creating an electronic heterostructure system in the process and explores how photoexcitation might perturb its electrical transport behaviour.</p> Graphical abstract <p>Fabrication of highly-uniform and crystalline thin films of 4,4′-azobenzene dicarboxylate (ADA) linker-based Cu-MOF, referred to as Cu-ADA thin films, through a layer-by-layer (LbL) method is reported. Molecular doping of TCNQ (tetracyanoquinodimethane) in Cu-ADA thin films led to the formation of an electronic heterostructure exhibiting rectification of current and enhancement of electrical conductance in the cross-plane and in-plane configurations, respectively.</p> <p></p>

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Thin films of azobenzene dicarboxylate-based Cu-MOF: Generating electronic heterostructure by molecular doping

  • 期刊论文

  • 发表日期：

    2025年3月29日

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  • Sauvik Saha,
  • Therese Mariya Jose,
  • Mini Kalyani,
  • Nahid Hassan,
  • Umashis Bhoi,
  • Ajay Ugale,
  • Nirmalya Ballav

摘要

Circumventing the limitations of lattice-mismatch factors in usual heterostructured thin films of metal-organic frameworks (MOFs), recent studies have achieved exotic electronic heterostructures for possible next-generation thin film device applications. This study reports a robust strategy to significantly enhance the conductivity in thin films of 4,4′-azobenzene dicarboxylate (ADA) linker-based 1D Cu-MOF while also creating an electronic heterostructure system in the process and explores how photoexcitation might perturb its electrical transport behaviour.

Graphical abstract

Fabrication of highly-uniform and crystalline thin films of 4,4′-azobenzene dicarboxylate (ADA) linker-based Cu-MOF, referred to as Cu-ADA thin films, through a layer-by-layer (LbL) method is reported. Molecular doping of TCNQ (tetracyanoquinodimethane) in Cu-ADA thin films led to the formation of an electronic heterostructure exhibiting rectification of current and enhancement of electrical conductance in the cross-plane and in-plane configurations, respectively.