Abstract: Improving perovskite solar cell (PSC) efficiencies would not have been possible without discovering and incorporating novel materials. More significant than materials usage is the compatibility of various material components in the entire device. Charge transport materials have been at the heart of this discussion to decide a PSC's functioning fundamentally. This review highlights various high-efficiency examples using alternate charge transport materials, bringing us one step closer to commercializing this technology. The article also elaborates on recent innovations in Bismuth and Copper-based PSCs. These are possible candidates to replace the conventional materials used in a standard PSC and affirmatively yield favorable results through extensive research.