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arXiv 1503.07327cond-mat.mtrl-sci
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从整体结构预测中鉴定新型Cu,Ag,Au三元氧化物

Identification of novel Cu, Ag, and Au ternary oxides from global structural prediction

Tiago F. T. Cerqueira, Sun Lin, Maximilian Amsler, Stefan Goedecker, Silvana Botti, Miguel A. L. Marques

摘要:

我们使用从头计算的全球结构预测,特别是最小跳跃方法,探索在寻找新的氧化物相的周期表。总共,我们研究了183种不同的MXO2形式的组合物,其中M=(Cu,Ag,Au),X是周期表中的元素。该系列包括众所周知的铜铜铁矿化合物,它们是迄今为止人类已知的最好的p型透明导电氧化物。我们的计算发现了81种稳定的组合物,其中只有36种包含在现有的数据库中。这些新相中的一些是透明电极的潜在良好候选物。这些结果表明,一方面,如何不完整的是我们的知识仍然是稳定的三元材料的相空间。另一方面,我们表明,结构预测与高通量方法相结合是一个强大的工具,以扩大知识,铺平了道路的实验发现新材料的大规模。

英文摘要:

We use ab initio global structural prediction, and specifically the minima hopping method, to explore the periodic table in search of novel oxide phases. In total, we study 183 different compositions of the form MXO2, where M=(Cu, Ag, Au) and X is an element of the periodic table. This set includes the well-known Cu delafossite compounds that are, up to now, the best p-type transparent conductive oxides known to mankind. Our calculations discover 81 stable compositions, out of which only 36 are included in available databases. Some of these new phases are potentially good candidates for transparent electrodes. These results demonstrate, on one hand, how incomplete is still our knowledge of the phase-space of stable ternary materials. On the other hand, we show that structural prediction combined with high-throughput approaches is a powerful tool to extend that knowledge, paving the way for the experimental discovery of new materials on a large scale.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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