Zinc oxide and cuprous oxide thin films are environmentally friendly and low-cost semiconductors and have various optoelectronic applications. The overall cost of the heterostructures
they form can also be reduced via economic fabrication methods. ZnO and Cu2O thin films can be
deposit under normal laboratory conditions via spin coating and electrodeposition methods.
However, the main concerns of the low-cost methods are the growth of pure Cu2O and efficient
interface between the films. On the other hand, it is still worth exploiting the low-cost spin
coating and electrodeposition methods due to their efficient thin film growth potential. In this
study, the one-step spin coating method was employed to prepare ZnO thin films. The electrodeposition of Cu2O thin film was achieved via developed a simple two electrodes cell. The
structural, morphological, optical, and electrical measurements show that p-type Cu2O thin films
were successfully deposited with our system. Although the open circuit voltage of the prepared
heterojunction solar cell devices is quite low, the methods here we apply and the conditions have
the potential to fabricate a solar cell. Open circuit voltage and thus efficiency will increase by
improving interfaces with chemical methods and more effective annealing.