Red luminescent water stable lead-free 2D tin halide perovskite nanocrystals for photodetectors.

In this report, we have synthesized an environmentally friendly hybrid organic-inorganic layered two-dimensional (2D) lead-free perovskite nanomaterial. The synthesized perovskites, namely (OleylAm) 2 SnI 4 (MHP1), exhibit outstanding water stability and emit luminous red light. The photodetector constructed using our material showcases superior characteristics, including a faster response than comparable devices and improved rise and fall times compared to other 2D perovskite nanomaterials.