Light-Driven Charge Transport and Optical Sensing in Molecular Junctions

Tang, Chaolong; Shiri, Mehrdad; Zhang, Haixin; Ayinla, Ridwan Tobi; Wang, Kun

doi:10.3390/nano12040698

Light-Driven Charge Transport and Optical Sensing in Molecular Junctions

Journal Article · Sat Feb 19 00:00:00 EST 2022 · Nanomaterials

DOI:https://doi.org/10.3390/nano12040698· OSTI ID:1845914

Tang, Chaolong; ; Zhang, Haixin; Ayinla, Ridwan Tobi; Wang, Kun

Probing charge and energy transport in molecular junctions (MJs) has not only enabled a fundamental understanding of quantum transport at the atomic and molecular scale, but it also holds significant promise for the development of molecular-scale electronic devices. Recent years have witnessed a rapidly growing interest in understanding light-matter interactions in illuminated MJs. These studies have profoundly deepened our knowledge of the structure–property relations of various molecular materials and paved critical pathways towards utilizing single molecules in future optoelectronics applications. In this article, we survey recent progress in investigating light-driven charge transport in MJs, including junctions composed of a single molecule and self-assembled monolayers (SAMs) of molecules, and new opportunities in optical sensing at the single-molecule level. We focus our attention on describing the experimental design, key phenomena, and the underlying mechanisms. Specifically, topics presented include light-assisted charge transport, photoswitch, and photoemission in MJs. Emerging Raman sensing in MJs is also discussed. Finally, outstanding challenges are explored, and future perspectives in the field are provided.

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Research Organization:: Mississippi State Univ., Mississippi State, MS (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0021942

OSTI ID:: 1845914

Alternate ID(s):: OSTI ID: 1903558

Journal Information:: Nanomaterials, Journal Name: Nanomaterials Journal Issue: 4 Vol. 12; ISSN 2079-4991; ISSN NANOKO

Publisher:: MDPI AGCopyright Statement

Country of Publication:: Switzerland

Language:: English

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