Enhanced amplified spontaneous emission from morphology-controlled organic–inorganic halide perovskite films

Abstract
Perovskite films with well-controlled crystallinity and morphology in a modified sequential deposition process by using solvent mixtures, involving DMF and DMSO, exhibit excellent ASE performances with threshold of 54.10 μJ cm−2 and FWHM of 8.16 nm.
Funding Information
  • China National Funds for Distinguished Young Scientists (61125505)
  • National Natural Science Foundation of China (61036007, 61177017, 61275175, 61377028)