Next Generation Optoelectronics with Emerging Hybrid Materials

Optoelectronic devices based on emerging hybrid materials are highly attractive due to their facile, mild processing, thereby potentially overcoming technological and cost constraints of conventional inorganic counterparts. The exploration of hybrid materials in the past two decades has led to the introduction of simple, but very original new ideas, promoting the evolution of hybrid device research towards low-cost and highly efficient solutions. A broad range of hybrid materials, spanning from colloidal nanocrystals to hybrid halide perovskites, have been exploited for various optoelectronic device architectures. Importantly, hybrid semiconductors allow the facile tailoring of their composition, structure, and morphology, all of which enables the tuning of their optical and electrical response. Profiting from such versatility, highly efficient light emitting diodes, photodetectors and solar cells can be easily fabricated with a low thermal budget. Additionally, at a more fundamental level, studies of exotic and photophysical properties on new hybrid compounds have also flourished.

This Research Topic highlights recent advances in optoelectronic devices (light emitting diodes, photodetectors, solar cells, phototransistors) based on hybrid materials such as hybrid halide perovskites (3D, 2D, nanocrystals, polycrystals etc.), colloidal nanocrystals, hybrid 2D nanostructures consisting of two-dimensional materials and polymers or molecules, polymer composites with inorganic fillers, organic/inorganic heterojunctions etc. This Research Topic also focuses on the understanding of photophysical and chemical properties of hybrid materials, with the aim of unveiling the synergistic effects of the organic and inorganic components towards improved device performance.

We encourage researchers in hybrid optoelectronics to submit their latest original research findings, mini-reviews, or perspectives dealing with themes that include, but are not limited to:

• Hybrid halide perovskites and optoelectronic devices thereof;
• Mastering the self-assembly of colloidal nanocrystals process controlled film formation for device purposes;
• Hybrid polymeric composites;
• Synthesis and hybridization of two-dimensional materials with organic compounds and their application in optoelectronic devices;
• Defect chemistry of hybrid materials under various stimuli (illumination, bias, etc.) and exposure to ambient species;
• Synthesis and/or self-assembly of hybrid halide perovskites and colloidal nanocrystals;
• Thin films and single crystals of low-dimensional perovskites.