Versatile self-assembled monolayers for perovskite-based optoelectronic devices

Abstract

The emergence of metal halide perovskite materials has triggered a revolutionary change in optoelectronic devices. Due to their superior optoelectronic properties and defect tolerance, metal halide perovskites can be used for a wide range of applications, including perovskite solar cells (PSCs), perovskite light-emitting diodes (PeLEDs), and perovskite photodetectors. However, the performance of perovskite-based optoelectronic devices is constrained by the severe charge recombination at the interfaces between perovskite film and charge transport layers. Self-assembled monolayers (SAMs) are one of the attractive options to address these interfacial issues. Therefore, we review the recent advances of SAMs in perovskite-based optoelectronic applications by elucidating their role and function in different devices. Then, we summarize the structure–function-performance relationships between SAMs and devices based on recently reported research progress. Finally, we provide our perspective on SAM’s roles in promoting practical applications by effectively improving the interfacial properties of perovskite-based optoelectronic devices. The emergence of metal halide perovskite materials has triggered a revolutionary change in optoelectronic devices. Due to their outstanding optoelectronic properties and defect tolerance, metal halide perovskites can be used for a wide range of applications, including perovskite solar cells (PSCs), perovskite light-emitting diodes (PeLEDs), and perovskite photodetectors. However, the performance of perovskite-based optoelectronic devices is constrained by severe charge recombination at the interfaces between the perovskite film and charge transport layers. Self-assembled monolayers (SAMs) are attractive for addressing these interfacial issues. SAMs exhibit notable cost-effectiveness while providing superior optoelectronic characteristics, with potential for enhancement via tunable molecular engineering and optimization of ion–dipole interactions. Here, we review the recent advances of SAMs in perovskite-based optoelectronic applications by elucidating their role and function in different devices. Then we summarize the structure–function-performance relationships between SAMs and devices based on recent research. Finally, we provide a perspective on the role of SAMs in promoting practical applications by effectively improving the interfacial properties of perovskite-based optoelectronic devices.

Topics & Concepts