Eesti  | English  
Semiconductor materials and nanotechnologies (EMBEL-II Group)

The main research objectives include: investigations of new semiconductor materials and technologies with the aim to develop novel solutions for semiconductor structures and architectures with implementations in new devices.

Background. Semiconductor electronics faces new paradigms. The dominating silicon era approaches to its end and the new activity field reaches much larger diversity in materials spectrum like wide band-gap semiconductor materials, nanostructures, bio- and organic materials in combination with silicon or other semiconductor materials. New technologies in material manufacturing (crystal growth, nanotube fabrication, heterostructures, bio- and organic structures compatible with semiconductor substrates) generate new tasks in device design and technologies. Requirements for effective energy harvesting and low consumption on one side, and for temperature/radiation resistance and high operation speed on the other side, create extremely strong connection between electronics and material science.

Visions and goals. New metallization technologies together with wide-bandgap semiconductor materials will introduce semiconductor devices with strongly improved electrical characteristics for applications in energy conversion and distributing. Our goal is to develop theoretical basis and finding practical solutions for a wide bandgap anisotropic hetero-polytypic interface inside the SiC (specific heterojunctions) for creating solutions to design new power HEMT devices with much higher speed characteristics than those of traditional MOS transistors. The realization of new high efficiency UV photo receiver cells will become hopefully possible when developing further this technology. Investigations of nanotechnological interfaces between organic/biological and semiconductor or metal bodies is our aim to find the methods for design of reliable BioMEMS.

The main research topics are: (1) investigations on semiconductor metallization technologies, (2) theoretical basis of hetero-polytypic interfaces; (3) nanotechnological compatibility of interfaces.