Recent progress in device-oriented II-VI research at the University of Wuerzburg

Interest in CdTe field effect transistors and multi-gated devices stems from the fact that CdTe is lattice matched to HgCdTe. As a consequence it may be possible to develop a monolithic technology that combines HgCdTe infrared focal plane arrays with on-board signal processing based on CdTe devices. Although CdTe metal-semiconductor field effect transistors have only recently been fabricated rapid improvement in device performance has been achieved. All the devices reported have been fabricated from CdTe:In epilayers grown by Photoassisted Molecular Beam Epitaxy. We report on devices having gold Schottky barrier with reverse breakdown voltages as high as 28. 0 V and ideality factors near 1. 7. These MESFETs exhibit good depleting mode action.