Our LED manufacturing facility is experiencing a variety of problems with our NH3 flow rates and purity while seeing increasing costs. What are your recommendations?
I have noticed that the performance of my current fluoride stripper diminishes over time, as evidenced by poor cleaning efficacy and substrate attack. I therefore must change the stripper bath more often than desired. What can I do to simultaneously improve the consistency of the process and minimize cost of ownership?
I am experiencing high n type background doping levels in my MOCVD process when I grow GaAs and AIGaAs devices. I think the problem is in the arsine I use. I'm buying the best grade available. What can I do?
|
