Abstract:
Solid state photoelectrochemical cells were made by depositing a p-CuSCN
layer on n-Cu2 0 . n-Cu2 0 was made by boiling a copper plate in a 1CT4 M C11SO4
solution and then immersing in a 10‘4 M KSCN solution to deposit the p-
CuSCN layer on n-Cu2 0 . Photocurrent enhancement was found for the junction
photo electrodes compared to that of their bare solar energy conversion devices
which can be attributed to the efficient charge separation processes produced by
the electric field in the junction. The duration of the immersion time of the Cu
plate in the KSCN solution controls the amount of light current. Initially, the
current increases and after sometime it starts to decrease. Preparation methods of
junction photo electrodes, photocurrent action spectra, current measurement Vs.
time, I-V characteristics of the photo electrodes were used to explain the
photocurrent enhancement mechanism.
