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arXiv · 1204.4657

High carrier mobility in transparent Ba1-xLaxSnO3 crystals with a wide band gap

X. Luo·Y. S. Oh·A. Sirenko·P. Gao·T. A. Tyson·K. Char·S-W. Cheong
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Abstract

We discovered that perovskite (Ba,La)SnO3 can have excellent carrier mobility even though its band gap is large. The Hall mobility of Ba0.98La0.02SnO3 crystals with the n-type carrier concentration of \sim 8-10\times10 19 cm-3 is found to be \sim 103 cm2 V-1s-1 at room temperature, and the precise measurement of the band gap \Delta of a BaSnO3 crystal shows \Delta=4.05 eV, which is significantly larger than those of other transparent conductive oxides. The high mobility with a wide band gap indicates that (Ba,La)SnO3 is a promising candidate for transparent conductor applications and also epitaxial all-perovskite multilayer devices.

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X. Luo, Y. S. Oh, A. Sirenko, P. Gao, T. A. Tyson, K. Char, S-W. Cheong. 2012-04-20. High carrier mobility in transparent Ba1-xLaxSnO3 crystals with a wide band gap. https://doi.org/10.1063/1.4709415

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