Dear Bhat, Thanks for your comments. I read in a journal that one way is to use SiCl4 + NH3. Any chance of using SiF4 + NH3? Regards, Kim ---------- Original Message ---------------------------------- From: VS BhatReply-To: General MEMS discussion Date: Sat, 5 Aug 2006 15:38:40 +0530 >Kim, >May be, you could try CVD to deposit the film >bhat > Quoting Glenn Silveira : > >> Kim, >> Fluorine is not used to make SiN it is used to clean the chamber. PECVD >> amorphous silicon recipe with nitrogen or ammonia should do the trick. >> >> P.S. A target index of refraction at 632nm will help if you need to have >> someone make this for you. >