Due to the unique advantages of perovskite solar cells (PSCs), this new class of PV technology has received much attention from both, scientific and industrial communities, which made this type of solar cell has been improved at an unprecedented rate. Although the obvious significance of PSCs, this technology has shown low stability in environmental conditions, and it is far to reach the stability standards of commercial types. This review article shows the contents of perovskite matter and its perfect photoelectric properties and discusses the process of converting photo energy to electric energy in which perovskite light absorbers are sandwiched between an electron transporting matter (ETM) and a hole transporting matter (HTM) and the relationships between them. It is important to explain the stability issues of PSCs so that, the main factors, which degrade the different layers and reduce the stability of PSCs, are highlighted. Moreover, the recent improvements in the principal parts of PSCs are summarized in this review article. This work has been done for a better understanding of this promising PV technology. Presides, it surveys significant solutions and suggestions of several studies in this field. Consequently, this review article is going to help researches to understand the structure of PSCs, and figure out how they can enhance the stability and efficiency of PSCs to achieve the required standards to be a commercial technology.