Because ZnO is transparent at the range of optical wavelength and have conductivity with some dopants, ZnO is expected as one of the TCO (transparent conductive oxides) alternatives to ITO.
In addition, ZnO plays important role in thin film solar cells such as CIGS as a buffer layer.
Toshima developed electrical conductive ZnO targets capable of DC sputtering to resolve slow sputtering rate.
Our ZnO targets are conductive but films are insulating.
