Hi Rais, I have only just seen your response (over a year later). I am interested in diffusing lithium into a 300 micron thick silicon substrate. As you well know typical Lithium drifted silicon detectors are a few mm thick however I am interested in evaluating the radiation hardness of thin lithium drifted silicon detectors. Unfortunately evaporation of Lithium is a messy and dangerous process and I am not allowed to do it in my clean room. If you are further interested please contact me directly for a more detailed explanation on the project. Cheers James -- Dr. James Paul Grant Postdoctoral Research Associate Microsystems Technology Group 76 Oakfield Avenue Room 205 School of Engineering University of Glasgow Glasgow Scotland G12 8LS Telephone: +44(0)141 330 6690