A promising p-type transparent conducting material: Layered oxysulfide

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copper compounds
energy gap
hole mobility
optoelectronic devices
strontium compounds
wide band gap semiconductors
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Liu, Min-Ling
Wu, Li-Bin
Chen, Qiang
Chen, Li-Dong
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Sr3Cu2Sc2O5S2, a layered oxysulfide, composed of anti-PbO-like [Cu2S2] slabs alternating with perovskitelike [Sr3Sc2O5] slabs, was systematically studied as a p-type transparent conducting material. The material has a wide energy gap of 3.1 eV and a p-type electrical conductivity of 2.8 S cm−1 at room temperature. The hole mobility of +150 cm2 V−1 S−1 at room temperature, which is much higher than the typical value of ~10−1–10 cm2 V−1 S−1 found in other copper compounds. The performances of bulk undoped Sr3Cu2Sc2O5S2 show the promise of copper oxysulfides as a class of p-type transparent conductive materials that is essential for optoelectronic applications.

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2007-12-01
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Copyright 2007 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. Reprinted in Journal of Applied Physics, Volume 102, Issue 11, Article 116108, December 2007. Publisher URL: http://dx.doi.org/10.1063/1.2817643
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