Atomic
materials are able to be directly coupled with it, causing the materials
to rapidly heat up. Previously, a single phase CAO nanopowder
was successfully synthesized by solid state synthesis of
nano-boehmite AlOOH,xH2O and Cu2O at 1100 C in argon atmosphere
[5]. Torkian et al. reported on the synthesis of CAO by conventional
and also by microwave heating of copper oxide (CuO) and
aluminum nitrate (Al(NO3)3$xH2O) but its optical and electrical
properties were not reported [13]. Moreover, photoluminescence
(PL), thermal conductivity (k) and dimensionless figure of merit
(ZT) used for calculating the TE properties of CAO are rarely available.
Therefore, our motivation is to investigate the structure,
morphology and optical properties of CAO crystal synthesized by
direct microwave heating of new starting raw materials. In addition,
TE properties (electrical properties, thermal conductivity and
ZT) of the CAO sample were measured and evaluated ranging from
room temperature to 1073 K.