In order to prepare p-type CaFe2O4, one will need to first prepare a photocathode. Next, one should ensure that both oxygen and hydrogen gasses have been produced after connecting the n-type TiO2 electrodes and the CaFe2O4.
In semiconductor two charge carriers are present i.e holes and electrons.The current is rate of flow of charges.so in ptype semiconductor the current is the sum of current due to holes and electrons.But current due to holes is more compsred to electrons in ptype.
since n type semiconductors have high mobility for electrons, they are preffered over ptype
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