We have studied charge trapping in tetraethylorthosilicate (TEOS) base
d phosphorous doped silicon glass (PSG) films deposited by plasma enha
nced chemical vapor deposition (PECVD) using electron spin resonance a
nd capacitance voltage measurements. The results indicate that these f
ilms trap electrons and holes very well. The charges appear to be trap
ped in phosphorus and carbon related centers as well as in E' centers.
The carbon related centers are unique to the TEOS films.