Precursor engineering enables high-performance all-inorganic CsPbIBr2 perovskite solar cells with a record efficiency approaching 13%

Green Energy Technologies: A Key Driver in Carbon Emission Reduction

“…Stabilization of perovskite precursor solutions using natural amino acids like N-acetylcysteine has also shown to maintain 98% of device efficiency over extended periods [77]. All-inorganic CsPbIBr2 perovskites have shown improved photocurrent density and a record efficiency of 12.8% with organic surface passivators [78]. Studies in lead-free and environmentally friendly alternatives continue, with a lead (Pb)-free ethyl ammonium-based PSC showing an efficiency increase to 24.42% upon optimization [79].…”

Healing the Buried Interface by a Plant-Derived Green Passivator for Carbon-Based CsPbIBr2 Perovskite Solar Cells

“…Compared to other perovskite-tailored devices, the PCE loss (especially for voltage deficit) of the CsPbIBr 2 device is much larger with an efficiency of over 12%, , which can be attributed to the formation of a large number of defects during the solution spin-coating fabrication process. Different from the triiodide perovskites, the incorporation of Br leads to a complex crystallization pathway by first nucleating a Br-rich phase from solution during supersaturation and subsequently undergoing a halide homogenization process, which inevitably promotes the defect formation and increases the nonradiative recombination loss in the final cell.…”

Performance optimization of CsPbIBr2-based perovskite solar cells through device modeling

“…The persistent challenge of long-term stability continues to be a significant obstacle to swift commercialization of PSCs. In order to address this challenge, there is a growing interest in the utilization of all-inorganic perovskites for photovoltaic applications [10][11][12][13][14], owing to their superior resistance to heat and humidity. Moisture exposure causes the black α-CsPbI 3 in the CsPbX 3 perovskite family (where X is I or Br) to transform the yellow (δ) phase at room temperature [13].…”

“…In order to address this challenge, there is a growing interest in the utilization of all-inorganic perovskites for photovoltaic applications [10][11][12][13][14], owing to their superior resistance to heat and humidity. Moisture exposure causes the black α-CsPbI 3 in the CsPbX 3 perovskite family (where X is I or Br) to transform the yellow (δ) phase at room temperature [13]. Although CsPbBr 3 possesses the highest stability, its potential to produce absorption at wavelengths below 530 nm is limited due to its wide band gap of approximately 2.3 eV [10].…”