20 - Perovskite-based LEDs and lasers

Abstract

Future illumination sources must be efficient and transparent, with high brightness, color purity, consistency, and interoperability with flexible substrates. Owing to their outstanding charge transport and bandgap tunability, perovskite structures have been shown to be appropriate substrates for a wide range of applications. The domain of this platform has also grown owing to the low-dimensionality of perovskite structures, which contain spatially confined perovskite domains at the nanoscale level. The main purpose of this chapter is to discuss the material properties, photophysical parameters, and spectroscopic features of perovskite-based devices. The improved physical and electrical features of perovskite structures have also posed a threat to current silicon-based solar cell technology. According to basic physics concepts, only those materials can be used for the fabrication of light-emitting materials which possess an appropriate band gap. This favors the development of perovskite-based light-emitting devices for laser applications. This chapter presents the various aspects of perovskite structures, such as their thermal conductivity and consistency, enhanced temperature regulation, and the influence of lower threshold carrier densities. Their efficacy in boosting the perovskite amplification spontaneously for LEDs and lasers has also been investigated.