Strategies for achieving high efficiency and stability in carbon-based all-inorganic perovskite solar cells

Organic-inorganic hybrid perovskite solar cells have achieved breakthroughs in terms of efficiency and are considered a potential next-generation photovoltaic technology, but cost and stability are still key hurdles to overcome. Carbon-based all-inorganic perovskite solar cells (C-IPSCs) exhibit significant advantages in terms of stability and cost savings. CsPbX3 is a typical structure of perovskite crystals, and the modulation of the I and/or Br anions at the X site helps obtain a relatively more stable crystal structure. Here, we briefly describe the various components of C-IPSCs, including the device structure and properties of C-CsPbI3, C-CsPbBr3, C-CsPbI2Br, and C-CsPbIBr2 perovskite solar cells. We focus on different C-IPSCs’ preparation methods and the advantages of different strategies for the different components of the prepared inorganic solar cells. The issues facing C-IPSCs are explored, and the future development prospects and commercial applications of carbon-based solar cells are also envisioned.