Solar energy utilizing silicon-based (SBCs) and Perovskite cells (PSCs) has emerged as a promising alternative to traditional sources of energy, such as fossil fuels. In this paper we document and compare the underlying mechanisms of SBCs versus PSCs, noting the known shortcomings of SBCs and how PSCs offer able to overcome them.  Focusing on PSCs, we explore and analyze the interface and grain boundary effects and their impact on cell efficiency.  We show how managing these characteristics of PSCs offers a significant improvement over SBCs and potentially a way forward to cheaper, higher power, simpler to manufacture and less enviromentally challenged solar cells when compared to SBC's.
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