제주장학재단

Neocera Ion-assisted PLD Systems are used to create biaxially textured templates (films) on amorphous or polycrystalline substrates by optimizing PLD film deposition rate and ion etch rate. Biaxial texturing is normally carried out at room temperature, facilitating the use of many substrates that otherwise do not permit high quality film growth. Yttria-stabilized Zirconia (YSZ) and related materials, and Magnesium Oxide (MgO) are among the most common materials used for texturing. Originally proposed for depositing biaxially textured high-temperature superconducting YBCO films on metallic substrates, ion-assisted PLD can be extended to many technologically important substrates where surface texturing is critically important for applications. After depositing biaxially textured templates, the active device layers such as YBCO, PZT, CIGS etc can be deposited at elevated temperatures as determined by the application. Ion-assisted PLD can be viewed as a method for developing smart interfaces between the substrate and the active film when the available deposition parameter space is not sufficient. In many applications, the film substrate combination is critical for device applications. However, if the chosen substrate does not allow high quality film growth, it may be necessary to develop a smart interface that will overcome the structural and chemical incompatibilities of the substrate. Ion-assisted PLD can create an interface of an oxide or a metal either through altering the nucleation process or through growth kinetics.