钙钛矿氧化物:低功函数电子发射器的新候选材料

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI:10.1109/IVEC.2014.6857525

R. Jacobs, D. Morgan, J. Booske

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摘要

钙钛矿氧化物是一种很有前途的新型电子发射材料，因为它们具有本质上低的功函数，而不需要额外的表面偶极子涂层。利用密度泛函理论(DFT)对LaBO3 (B=过渡金属)钙钛矿进行了分析，发现LaBO3的功函数最低，为1.52 eV。

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Perovskite oxides: New candidate materials for low work function electron emitters

Perovskite oxides are promising materials for a new class of electron emitting materials because they possess intrinsically low work functions without the need for an additional surface dipole coating. Density Functional Theory (DFT) was used to examine a series of LaBO3 (B=transition metal) perovskites, and it was found that LaVO3 exhibited the lowest work function of 1.52 eV.

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IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference

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