Light-Emitting Organic Semiconductor-Incorporated Perovskites: Fundamental Properties and Device Applications

Abstract

Recently, organic semiconductor-incorporated perovskites (OSiPs) have emerged as a new subclass of next-generation organic–inorganic hybrid materials. OSiPs combine the advantages of organic semiconductors, such as large design windows and tunable optoelectronic functionalities, with the excellent charge-transport properties of the inorganic metal-halide counterparts. OSiPs provide a new materials platform for the exploitation of charge and lattice dynamics at the organic–inorganic interfaces for various applications. This Perspective reviews recent achievements in OSiPs highlighting the benefits from organic semiconductor incorporation and elucidates the fundamental light-emitting mechanism, energy transfer, as well as band alignment structures at the organic–inorganic interface. Insights on the emission tunability lead toward a discussion of the potential of OSiPs in light-emitting applications, such as perovskite light-emitting diodes or lasing systems.

Molecular templating of layered halide perovskite nanowires

“…Building on previous studies of semiconductor nanowire lasers (21) and lasing in 3D halide perovskites (22,23), we investigated the light amplification behavior of BrCA3-based nanowires. In lead-based layered perovskites, the lasing threshold is often constrained by the strong exciton-phonon interaction or Auger recombination (7). Enhanced lasing performances have been pursued in quasi-2D systems (24,25).…”

“…These methods have high processing complexity and cost as well as limited scalability and design flexibility. Notably, the structure of layered perovskites has inspired the use of bulky organic spacers with engineered bandgaps ( 6 , 7 ) and intermolecular π interactions ( 8 ). We have found organic templating molecules that can break the in-plane symmetry of layered perovskites and induce 1D growth through secondary bonding interactions.…”

Multifunctional TADF Additives for High-Performance Green Perovskite Light-Emitting Diodes

“…Metal halide perovskite materials (MHPs) hold immense promise for applications in light-emitting diodes (PeLEDs) − solar cells − and quantum dots. , Their exceptional photoelectric properties have made them stand out as leading materials in the new generation of luminescent materials. These remarkable features attribute encompass high photoluminescence quantum yields (PLQY) reaching up to 100%, high color purity, low exciton binding energies, easily tunable emission spectra spanning from ultraviolet to infrared wavelengths, narrow emission, high carrier mobility, cost-effectiveness, and a versatile solution-based processing approach . Over the years, the development of perovskite light-emitting diodes (PeLEDs) has witnessed significant progress, marked by substantial enhancements in luminance, external quantum efficiency (EQE), and stability.…”

“…These remarkable features attribute encompass high photoluminescence quantum yields (PLQY) reaching up to 100%, 11 high color purity, 12 low exciton binding energies, easily tunable emission spectra spanning from ultraviolet to infrared wavelengths, 13 narrow emission, 14 high carrier mobility, 15 costeffectiveness, and a versatile solution-based processing approach. 16 Over the years, the development of perovskite light-emitting diodes (PeLEDs) has witnessed significant progress, marked by substantial enhancements in luminance, external quantum efficiency (EQE), and stability. In the green, 17 red domains, 18 and near-infrared, 3 EQE has already exceeded 20%.…”

Regulating the crystal and electronic structures and optical properties of hybrid bromoplumbates with alkylated N, S- or P-containing aromatic cations

“…12,[28][29][30][31][32] The PL emissions of hybrid materials are always required to be regulated to cater for different requirements. [33][34][35][36][37][38][39] Several approaches are effective to tune the PL emissions, which includes altering the emission center, 40,41 functionalization, 42,43 variation of excitation light 44,45 and lattice defect engineering. 46 Further, the PL properties of hybrid materials can also be regulated by changing the electronic structure and the emission pathway of the excited states.…”