基于硼掺杂石墨烯气凝胶阴极光子增强热电子发射特性研究
Study on Photon-Enhanced Thermionic Emission Characteristics of Boron-Doped Graphene Aerogel Photocathode Material
摘要: 光子增强热电子发射(PETE)转换器是将光伏发电和热离子发电结合到一个单一的物理过程的能量转换器。本文采用了一锅水热还原工艺以及冷冻干燥工艺，分别以氧化石墨烯(GO)和硼酸作为碳(C)源和硼(B)源制备了硼掺杂石墨烯气凝胶(BGA)，用自制装置测试了样品的PETE性能。硼原子掺杂可以调控石墨烯气凝胶的带隙，并且可以使石墨烯气凝胶呈现P型半导体特性，与未掺杂石墨烯气凝胶(GA)相比，BGA具有更好的PETE效应，其PETE电流(3.85 μA)约为GA (0.45 μA)的8.5倍。
Abstract: Photon-enhanced thermionic emission (PETE) converter is an energy converter that combines photovoltaic power generation and thermionic power generation into a single physical process. In this paper, boron-doped graphene aerogel (BGA) was prepared by one-pot hydrothermal reduction process and freeze-drying process using graphene oxide (GO) and boric acid as carbon (C) source and boron (B) source, respectively. The PETE properties of the samples were tested by a self-made device. Boron atom doping can regulate the band gap of graphene aerogels, so that graphene aerogels exhibit P-type semiconductor properties. Compared with undoped graphene aerogel (GA), BGA has a better PETE effect, and its PETE current (3.85 μA) is about 8.5 times that of GA (0.45 μA).
文章引用：罗晟昊, 沈晓明. 基于硼掺杂石墨烯气凝胶阴极光子增强热电子发射特性研究[J]. 材料科学, 2024, 14(3): 358-367. https://doi.org/10.12677/ms.2024.143042

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