Atomically thin two-dimensionalorganic-inorganic hybrid perovskites
Atomically thin 2D hybrid perovskite sheets exhibit photoluminescent emissions that are tunable by changing sheet thickness & composition.
A solution-phase growth method is developed to synthesize atomically thin 2D hybrid perovskites with a well-defined square shape and large size. For the first time, we are introducing a new member of the 2D nanostructure family: an ionic semiconductor.
Significance and Impact
This opens opportunities for fundamental research and introduces a type of 2D material for nanoscale optoelectronic devices.
- The hybrid perovskite 2D sheets exhibit an unusual structural relaxation compared to the bulk material.
- The subtle structural change leads to a band gap shift as compared to the bulk material.
- The 2D crystals exhibit efficient photoluminescence, and color tuning could be achieved by changing sheet thickness as well as composition via the synthesis of related materials