Preparation Strategies of p-Type Cuprous Oxide and Its Solar Energy Conversion Performance

As a representative intrinsic p-type inorganic semiconductor material, cuprous oxide (Cu₂O) has been widely used in photovoltaics, catalysis, chemical industries, and other fields, owning an extremely important position. For a long time, the literature on the preparation methods and preparation technologies of Cu₂O have been relatively scattered and independent, resulting in a certain degree of obstacles and difficulty in obtaining relevant technical knowledge and understanding the internal principles. Aiming at the progress and innovation of Cu₂O preparation methods and technologies in recent years, combined with our team’s long-term experience accumulation and research results, this article focuses on the classification, principles, and characteristics of the various Cu₂O preparation methods and also involves representative applications and performance in the light energy utilization area. This review aims to provide reference and guidance for the preparation and research of Cu₂O and other related inorganic oxide semiconductors.