This review explores b-Si comprehensively, discussing its fabrication processes, distinctive properties, and contributions to both solar energy conversion and photonic technologies. Black Silicon Technology by Application (Polycrystalline Silicon Cells, Photodetector, Image Sensor, Others), by Types (Reactive Ion Etching (RIE), Metal Catalyzed Chemical Etching (MCCE)), by North America (United States, Canada, Mexico), by South America (Brazil, Argentina, Rest of South. The emergence of black silicon (b-Si) offers a transformative solution, thanks to its micro- and nanoscale structures that provide ultra-low reflectivity and enhanced light absorption. Beyond solar energy applications, b-Si has. Black silicon has attracted significant interest for various engineering applications, including solar cells, due to its ability to create highly absorbent surfaces or interfaces for light. It enhances light absorption in crystalline solar cells, improving the efficiency of converting incident. In this work, a photovoltaic (PV) cell fabricated using nanoporous black silicon (bSi) synthesized via an aluminium-assisted chemical etching (AACE) process is demonstrated for the first time. Potential for lower manufacturing costs compared to traditional silicon. The conversion rate is significantly influenced by the unique properties of black silicon, which includes its surface texture that minimizes. Among the various innovations in solar technology, black silicon solar cells are emerging as a game-changer.