Properties of a ZnO:B Layer Fabricated by LPCVD and Its Application in Perovskite Solar Cells

A process for finding inexpensive materials for use in perovskite solar cell applications is an interesting task for research aimed at reducing the cost of producing samples. To address this problem, the application of a metal oxide can be helpful. Metal oxides have always attracted attention due to their combination of conductive and optic properties. Among them, zinc oxide stands out. Zinc oxide films, which are nontoxic and easy to produce, have a suitable band gap and can be recommended as promising materials in optoelectronics. In this work, the results of the research of a ZnO film doped with boron (ZnO:B) on glass substrates were obtained via the LPCVD (low-pressure chemical vapor deposition) method. The surface, electrical, structural, and optical properties of the ZnO:B layer were studied. The application of a ZnO:B layer in planar perovskite solar cells was demonstrated. The fabricated test sample of such perovskite solar cells has an efficiency of 2,62%. An opportunity for the use of a ZnO:B film as an inexpensive substitute for transparent conductive oxides such as FTO and ITO substrates was shown.