Abstract
Perovskite materials are considered to be the ideal materials in solar cell production because of their excellent natures, which have received a wide attention. Perovskite solar cell (PSC) is expected to replace the silicon-based solar cell and become the new generation of solar cell technology, because of its low cost, simple process flow and high photoelectric conversion efficiency (PCE). However, the stability of the PSC has been restricting its commercial development. In recent years, much research has been carried out to improve its stability. This review describes the construction of perovskite material, the composition of PSC and the key factors affecting the stability of PSC, including humidity stability, temperature stability and light stability, then takes inorganic buffer layer, ionic liquids and cation doping three methods as examples to summarize the mechanisms and strategies of improving the stability of PSC, and points out the great potential of multi-functional ionic liquids to improve the stability and efficiency of PSC in future.
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