Semiconductor nanomaterial-based epitaxial heterostructures with precisely controlled compositions and morphologies are of great importance for various applications in optoelectronics, thermoelectrics, and catalysis. Until now, various kinds of epitaxial heterostructures have been constructed. In this minireview, we will first introduce the synthesis of semiconductor nanomaterial-based epitaxial heterostructures by wet-chemical methods. Various architectures based on different kinds of seeds or templates are illustrated, and their growth mechanisms are discussed in detail. Then, the applications of epitaxial heterostructures in optoelectronics, catalysis, and thermoelectrics are described. Finally, we provide some challenges and personal perspectives for the future research directions of semiconductor nanomaterial-based epitaxial heterostructures.

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具有精确控制成分和形貌的基于半导体纳米材料的外延异质结构对于光电子学、热电学和催化领域的各种应用具有重要意义。到目前为止，已经构建了各种外延异质结构。在这篇小综述中，我们将首先介绍湿化学方法合成基于半导体纳米材料的外延异质结构。阐述了基于不同种类种子或模板的各种架构，并详细讨论了它们的生长机制。然后，描述了外延异质结构在光电子学、催化和热电学中的应用。最后，我们对基于半导体纳米材料的外延异质结构的未来研究方向提出了一些挑战和个人观点。

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