“In the field of micro-nano lasers, a new study introduces ethyl acetate as a green antisolvent to create high-quality quasi-2D perovskite films. This innovation enhances crystallinity, inhibits low n-phases, and extends gain lifetime, leading to a significant reduction in ASE threshold and high net modal gain. The optimized film enables a VCSEL with single-mode lasing and a high quality factor, advancing scalable photonic integration.”
“Metal halides have made significant strides in optoelectronic materials. Researchers have explored the self-trapped exciton emission in perovskites, which has sparked interest in using metal halides for lighting. This review highlights the spectral characteristics, mechanisms, and optimization strategies of metal halide STE emitters, addressing challenges and future trends to advance their commercialization.”
“In a recent study, researchers successfully synthesized five new crystals using the Czochralski method. These crystals, including Dy∶Ca3Li0.275Nb1.775Ga2.95O12 (CLNGG) and its doped variants, were investigated for their spectral features and energy transfer mechanisms. The findings show that co-doping with Tb3+ and Eu3+ ions enhances emission cross-sections and fluorescence quantum efficiency in the yellow wavelength region. This research opens a new direction for developing efficient yellow light lasers.”