Polymer Dendrite Assisted Fabrication of Lasing Structures

The development of new synthetic approaches for realization of high-quality perovskite nanocrystals is one of perspective research directions. Generally, synthetic approaches require complex apparatus and precise parameter control to achieve high quality nanocrystals. Therefore, searching for low cost and simple approaches for fabrication of fine perovskite nanocrystals capable of demonstrating resonant properties such as lasing is one of the most difficult but promising research directions. In our approach we use polymer dendrites that offer high structural and geometrical reproducibility by growing in periodic structures. This reproducibility and periodicity can be used for fabrication of various resonant photonic structures confined inside dendrites. In our study, we demonstrate that bunches of high-quality perovskite nanocrystals can be grown inside polymer dendrites. Obtained perovskite nanocrystals preserve strict geometrical form typical for growth methods like chemical vapor deposition or solution assisted nucleation. Obtained perovskite nanocrystals under pump excitation demonstrate high-quality single mode lasing with narrow laser line.