Molecular design for enhanced spin transport in molecular semiconductors

Molecular semiconductors (MSCs), characterized by a longer spin lifetime than most of other materials due to their weak spin relaxation mechanisms, especially at room temperature, together with their abundant chemical tailorability and flexibility, are regarded as promising candidates for spintronic...

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Published inNano research Vol. 16; no. 12; pp. 13457 - 13473
Main Authors Yang, Tingting, Qin, Yang, Gu, Xianrong, Sun, Xiangnan
Format Journal Article
LanguageEnglish
Published Beijing Tsinghua University Press 01.12.2023
Subjects
Atomic/Molecular Structure and Spectra
Biomedicine
Biotechnology
Chemistry and Materials Science
Condensed Matter Physics
Ferromagnetism
Information processing
Materials Science
Nanotechnology
Review Article
Room temperature
Semiconductors
Spintronics
Transport processes
molecular spintronics
molecular design
spin transport
spin injection
molecular semiconductors
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Summary:Molecular semiconductors (MSCs), characterized by a longer spin lifetime than most of other materials due to their weak spin relaxation mechanisms, especially at room temperature, together with their abundant chemical tailorability and flexibility, are regarded as promising candidates for spintronic applications. Molecular spintronics, as an emerging subject that utilizes the unique properties of MSCs to study spin-dependent phenomena and properties, has attracted wide attention. In molecular spintronic devices, MSCs play the role as medium for information transport, process, and storage, in which the efficient spin inject–transport process is the prerequisite. Herein, we focus mainly on summarizing and discussing the recent advances in theoretical principles towards spin transport of MSCs in terms of the injection of spin-polarized carriers through the ferromagnetic metal/MSC interface and the subsequent transport within the MSC layer. Based on the theoretical progress, we cautiously present targeted design strategies of MSCs that contribute to the optimization of spin-transport efficiency and give favorable approaches to exploring accessional possibilities of spintronic materials. Finally, challenges and prospects regarding current spin transport are also presented, aiming to promote the development and application of the rosy and energetic field of molecular spintronics.
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ISSN:1998-0124
1998-0000
DOI:10.1007/s12274-023-5989-z