“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 gained global attention as outstanding optoelectronic materials. Over the past decade, research has made significant strides, particularly in color-conversion applications. The discovery of self-trapped exciton (STE) emission in perovskites has sparked interest in using metal halides for broadband lighting. This review provides a comprehensive overview of metal halide STE emitters for lighting applications, highlighting ideal spectral characteristics, mechanisms, optimization strategies, and recent advances. It also outlines challenges and future trends, aiming to facilitate 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.”