Chapter 3 - Perovskite-based lasers: An introductory survey

Abstract

The recent steep rise in perovskite materials has triggered tremendous opportunities in the field of photonics and solar-cell technologies. As a direct bandgap semiconductor, perovskite exhibits the unique optical properties of bandgap tunability, charge-carrier mobility, defect tolerance, photoluminescence quantum efficiency and power conversion efficiency, which makes them as promising light-emitting materials for high optical gain, low-threshold and multicolor laser applications. Here, we begin with the investigation of structure growth and morphological control of perovskites, including thin films, nanoplatelets, nanowires and quantum dots. Next, fundamental photo-physical mechanisms, related with the charge-carrier recombination dynamical process, diffusion and radiative efficiencies, are discussed to elucidate perovskite light-emitting properties. Finally, we turn to discuss the light-emitting lasing with architectural innovations and the perovskite device performance in terms of optical gain, color-tuning, spectral coherence, and stability. The remaining challenges of perovskite light emitting materials and the potential future perovskite-based are heighten.