Solid State Technology and Devices Seminar: Semiconductor Thin-Film Transfer Technology has Finally Arrived

Seminar | February 2 | 1-2 p.m. | Cory Hall, 521 Hogan Room

 Eli Yablonovitch, Electrical Engineering and Computer Sciences Dept., University of California, Berkeley

 Electrical Engineering and Computer Sciences (EECS)

For years, lattice mismatched hetero-epitaxy has been regarded as the correct approach for heterogeneous integration, but the mismatch led to material quality problems. At around the same time a competing approach, thin-film epitaxial layer transfer began to be developed, but the handling of free-standing thin films was a primitive art. Over the period of decades the discipline of processing free-standing thin films has steadily improved, now becoming a routine commercial technology in photovoltaics, LED’s, SOI, and other semiconductor devices. In this talk, I will review the mechanical discipline that has been learned for handling free-standing semiconductor films, and speculate on future applications of this materials technology., 510-642-3214