Perovskite multiple quantum wells: toward artificial construction and lasing

Halide perovskites (HPs) are rising semiconductors in optoelectronics, such as photovoltaic and light-emitting applications. However currently, laser diode with HPs is still not realized yet. When coherent emissions are targeted as the applications, materials with lower lasing thresholds and increased stabilities must be ensured to realize the device. Perovskite multiple-quantum-wells (MQWs) can potentially ease the population inversion by confining photoexcitation, but there must be several more progress on fabrication process and structural design are required to realize electrically pumped laser. Hence, in this perspective, current research trend and progress in this field are summarized and some suggestions to design HP MQW lasers, whether self-assembled or artificially fabricated, ground on recent literature are casted.