钙钛矿电池的稳定性是一个问题，虽然它的经济优势，太阳能电池的制造。钙钛矿是由晶体发展而来的，与光伏电池类似，这种薄膜用于太阳能收集。钙钛矿需要真空沉积，以使薄膜更加均匀。薄膜越均匀，收集能量的质量就越好。为了实现真空沉积，进行了共蒸发过程(Ossilla, 2016)。该工艺中的甲基铵将共蒸发，形成无机发光二极管卤化物成分。钙钛矿开发的主要挑战始于需要使用的专业蒸发技术。在这方面，钙钛矿制造商可能面临校准问题。交叉污染问题也可能在这里，因为有接触有机和无机来源。随着时间的推移，这些形式的稳定性和材料性能相关的问题得到了解决，因为更多的研究提供了将钙钛矿用于制造太阳能电池的更简单的方法。最初，社会细胞需要一种氧化物支架(Snaith et al.， 2014)。脚手架的作用在后来就没有必要了，因为除了在添加钙钛矿层方面所做的替换外，光伏使用的薄层被认为是类似的。这些活性层比之前用于制造真空的沉积材料使用得更好(Park, 2015)。
The literature review chapter mainly presents the Perovskite structure, the Perovskite solar cells, and the efficiency of cells, with a more focused discussed on the stability issues that are associated with the Perovskite cells.
Stability of Perovskite cells are an issue albeit its economical advantage to solar cell manufacturing. Perovskites are developed from crystals and similar to PV cells are incorporated in this films for solar energy harvesting. Perovskites require vacuum deposition in order for the film to be more uniform. The more uniform the film, the better will be the quality of energy harvesting that would be possible. In order to achieve the vacuum deposition a co-evaporation process is done (Ossilla, 2016). The methyl ammonium in the process will co-evaporate in order to form inorganic led halide components. The primary challenge in the development of the Perovskites starts with the specialist evaporation technique that needs to be used. Here the makers of the Perovskite might face problems with calibration. Cross contamination issues are also possible here as there is exposure to both organic and inorganic sources. These forms of stability and material property related issues were resolved with time as more research offered much simpler ways for incorporating Perovskites in making the solar cells. Initially the social cells required a form of oxide scaffolding (Snaith et al., 2014). The purpose of the scaffolding was not necessary later as the thin layers made use of in photovoltaic are seen to be similar except for the substitution that is done in terms of adding the Perovskite layers. These are active layers which can be used well than the deposition materials used to create vacuum earlier (Park, 2015).