TY - JOUR
T1 - Growth and properties of transparent conducting CuAlO2 single crystals by a flux self-removal method
AU - Yoon, J. S.
AU - Nam, Y. S.
AU - Baek, K. S.
AU - Park, C. W.
AU - Ju, H. L.
AU - Chang, S. K.
PY - 2013
Y1 - 2013
N2 - We investigated the growth and properties of CuAlO2 single crystals grown by a flux self-removal method. In this method, the flux crept up the wall of an alumina crucible completely during the slow cooling process, leaving flux-free CuAlO2 crystals on the bottom of the crucible. The resulting CuAlO2 crystals had typical dimensions of 0.5-5 mm in the ab-plane and 10-300 mm along the c-axis. The crystals had a hexagonal structure with a=b=2.857(1) Å and c=16.939(2) Å. Their resistivity was anisotropic with a c-axis resistivity (ρc) about ∼17 times higher than the ab-plane resistivity (ρab). However, both ρab and ρc showed thermally activated behavior with the same activation energy of ∼0.6 eV. The CuAlO2 crystals had direct and indirect bandgaps of 3.40 eV and 2.22 eV, respectively.
AB - We investigated the growth and properties of CuAlO2 single crystals grown by a flux self-removal method. In this method, the flux crept up the wall of an alumina crucible completely during the slow cooling process, leaving flux-free CuAlO2 crystals on the bottom of the crucible. The resulting CuAlO2 crystals had typical dimensions of 0.5-5 mm in the ab-plane and 10-300 mm along the c-axis. The crystals had a hexagonal structure with a=b=2.857(1) Å and c=16.939(2) Å. Their resistivity was anisotropic with a c-axis resistivity (ρc) about ∼17 times higher than the ab-plane resistivity (ρab). However, both ρab and ρc showed thermally activated behavior with the same activation energy of ∼0.6 eV. The CuAlO2 crystals had direct and indirect bandgaps of 3.40 eV and 2.22 eV, respectively.
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U2 - 10.1016/j.jcrysgro.2012.12.134
DO - 10.1016/j.jcrysgro.2012.12.134
M3 - Article
AN - SCOPUS:84888360546
SN - 0022-0248
VL - 366
SP - 31
EP - 34
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
ER -