Physicists achieved a 60-yr goal in optoelectronics: the 1st electrically pumped perovskite polariton laser diode. By "freezing" mobile ions via cryocooling to create a stable junction, the device achieves continuous lasing at a low 60 µA threshold.

Physicists achieved a 60-yr goal in optoelectronics: the 1st electrically pumped perovskite polariton laser diode. By "freezing" mobile ions via cryocooling to create a stable junction, the device achieves continuous lasing at a low 60 µA threshold.