A. Fejfar et al., PRECISE MEASUREMENT OF THE DEEP DEFECTS AND SURFACE-STATES IN A-SI-H FILMS BY ABSOLUTE CPM, Journal of non-crystalline solids, 200, 1996, pp. 304-308
The newly introduced setup for 'absolute' constant photocurrent method
allows measurement of the optical (photocurrent) absorption spectrum,
alpha(E), directly in absolute units (cm(-1)) without additional cali
bration and undisturbed by interference fringes, Computer simulation w
as performed to demonstrate the precision of the measurement and to ex
plain residual interferences sometimes observed. The residual interfer
ences are shown to be direct fingerprints of an inhomogeneous defect d
istribution.