This paper studies the UV photoconductivity for non-doped and weakly Mg dop
ed n-type GaN films deposited by MOM. It was observed that these n-type sam
ples have. notable UV photoresponse and the relaxation time of the photores
ponse is relatively short-In the weak intensity range, the photoresponse de
creases linearly with the light intensity and the relaxation time of the ph
otoresponse becomes larger.