Efficient heat dissipation perovskite lasers using a high-thermal-conductivity diamond substrate

Efficient heat dissipation that can minimize temperature increases in device is critical in realizing electrical injection lasers. High-thermal-conductivity diamonds are promising for overcoming heat dissipation limitations for perovskite lasers. In this study, we demonstrate a perovskite nanoplatelet laser on a diamond substrate that can efficiently dissipate heat generated during optical pumping. Tight optical confinement is also realized by introducing a thin SiO2 gap layer between nanoplatelets and the diamond substrate. The demonstrated laser features a Q factor of similar to 1962, a lasing threshold of 52.19 mu J cm(-2), and a low pump-density-dependent temperature sensitivity (similar to 0.56 +/- 0.01 K cm(2) mu J(-1)) through the incorporation of the diamond substrate. We believe our study could inspire the development of electrically driven perovskite lasers.