Second, during diffusion processes where {TAIL ~ the photodiode} is exposed to {HEAD ~ relatively high temperatures} , the time of diffusion should be minimized, generally to less than three hours, preferably to less than two or even one hour 
Second , during diffusion processes where { TAIL ~ the photodiode } is exposed to { HEAD ~ relatively high temperatures } , the time of diffusion should be minimized , generally to less than three hours , preferably to less than two or even one hour
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH