Terahertz Conductivity of Free‐Standing 3D Covalent Organic Framework Membranes Fabricated via Triple‐Layer‐Dual Interfacial Approach

Author:

Puthukkudi Adithyan12,Nath Satyapriya12,Shee Payel32,Dutta Arpita32,Rajput Chetan V.1,Bommakanti Suresh1,Mohapatra Jeebanjyoti12,Samal Mahalaxmi1,Anwar Sharmistha4,Pal Shovon325,Biswal Bishnu P.125ORCID

Affiliation:

1. School of Chemical Sciences National Institute of Science Education and Research Bhubaneswar Jatni Khurda Odisha 752050 India

2. Homi Bhabha National Institute Training School Complex, Anushakti Nagar Mumbai 400094 India

3. School of Physical Sciences National Institute of Science Education and Research Bhubaneswar, Jatni Khurda Odisha 752050 India

4. CSIR‐Institute of Minerals and Materials Technology Bhubaneswar 751013 Odisha India

5. Centre for Interdisciplinary Sciences National Institute of Science Education and Research Bhubaneswar, Jatni Khurda Odisha 752050 India

Abstract

AbstractProcessable covalent organic framework membranes (COFM) are emerging as potential semiconducting materials for device applications. Nevertheless, the fabrication of crystalline and free‐standing 3D COFMs is challenging. In this work, a unique time and solvent‐efficient triple‐layer‐dual interfacial (TLDI) approach for the simultaneous synthesis of two 3D COFMs from a single system is developed. Besides, for the first time, the optical conductivity of these free‐standing 3D COFMs is analyzed using terahertz (THz) spectroscopy in transmission mode. Interestingly, these membranes show excellent transmittance at THz frequencies with very high intrinsic THz conductivities. The evaluated scattering time and plasma frequency of the free carriers of the COFMs are highly promising for future applications in optoelectronic devices in THz frequencies.

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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