A review of surface functionalisation of diamond for thermionic emission applications

نویسندگان

چکیده

Surface functionalisation of diamond can produce negative electron affinity (NEA), where the conduction band lies higher in energy than vacuum level. Hydrogen termination is well-known to NEA on but be removed by temperatures above ∼700 °C, making it unsuitable for diamond-based thermionic applications, high are converted into electricity via an emission process. In this review article we give overview emission, describe potential applications converters, then different surface schemes that provide a with NEA. We discuss relative merits surfaces have been developed both computationally and experimentally as alternative cathode materials devices.

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ژورنال

عنوان ژورنال: Carbon

سال: 2021

ISSN: ['0008-6223', '1873-3891']

DOI: https://doi.org/10.1016/j.carbon.2020.09.019