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Structure/Property Control in Photocatalytic Organic Semiconductor Nanocrystals

机译：光催化有机半导体纳米晶体中的结构/性能控制

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摘要

Photocatalysis offers a practical solution to the ever increasing energy and environmental issues by using a semiconductor to harvest freely available sunlight. Photoactive organic semiconductor nanocrystals (OSNs) are promising photocatalysts due to their structure and function which are easily tunable by molecular design. Extensive studies have yielded significant progress on OSNs in terms of photoresponse, charge carrier mobility, as well as photoconversion efficiency. This review provides a comprehensive discussion of the emerging crystal and interface engineering strategies used in optimizing structure/property of OSNs. The basic mechanisms involved in organic photocatalysis are discussed, for a better understanding of its dependence on the molecular and supramolecular structures. Then, the intermolecular interactions in molecular packing and the kinetic and thermodynamic control over the crystal growth process are summarized, with the aim of tuning the optical and electrical properties. Band energy alignment, charge carrier dynamics, and charge transfer are discussed in different heterostructures. In each case, structure/property relationships and how to tune them are emphasized. Finally, challenges and opportunities for the practical use of the organic photocatalysts are discussed.
机译：光电催化通过使用半导体来丰收可自由的阳光来提供能量和环境问题的实用解决方案。光活性有机半导体纳米晶体（OSN）是有前途的光催化剂，由于它们的结构和功能，可通过分子设计容易地调谐。广泛的研究在光响应，电荷载流子迁移率和光电转换效率方面对OSN产生了显着进展。本综述提供了对优化OSN结构/特性的新兴晶体和界面工程策略进行了全面讨论。讨论了有机光催化的基本机制，以更好地理解其对分子和超分子结构的依赖性。然后，总结了分子包装中的分子间相互作用和对晶体生长过程的动力学和热力学控制，目的是调整光学和电性能。在不同的异质结构中讨论了带节能，电荷载体动力学和电荷转移。在每种情况下，强调结构/属性关系以及如何调整它们。最后，讨论了挑战和实际使用有机光催化剂的机会。

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  • 来源
    《Advanced Functional Materials》 |2021年第36期|2104099.1-2104099.37|共37页
  • 作者

    Chen Yingzhi; Yan Chuxuan; Dong Jiaqi; Zhou Wenjie; Rosei Federico; Feng Yun; Wang Lu-Ning;

  • 作者单位

    Univ Sci & Technol Beijing Sch Mat Sci & Engn Beijing Adv Innovat Ctr Mat Genome Engn Beijing 100083 Peoples R China;

    Univ Sci & Technol Beijing Sch Mat Sci & Engn Beijing Adv Innovat Ctr Mat Genome Engn Beijing 100083 Peoples R China;

    Univ Sci & Technol Beijing Sch Mat Sci & Engn Beijing Adv Innovat Ctr Mat Genome Engn Beijing 100083 Peoples R China;

    Univ Sci & Technol Beijing Sch Mat Sci & Engn Beijing Adv Innovat Ctr Mat Genome Engn Beijing 100083 Peoples R China;

    Inst Natl Rech Sci Ctr Energie Mat & Telecommun 1650 Boul Lionel Boulet Varennes PQ J3X 1S2 Canada;

    Peking Univ Third Hosp Dept Ophthalmol Beijing 100191 Peoples R China;

    Univ Sci & Technol Beijing Sch Mat Sci & Engn Beijing Adv Innovat Ctr Mat Genome Engn Beijing 100083 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    crystal structure engineering; interface structure engineering; organic semiconductor nanocrystals; photocatalysis;

    机译：晶体结构工程;界面结构工程;有机半导体纳米晶体;光催化;

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