The field of optoelectronics is experiencing a transformative shift as the global display and lighting industry rapidly moves towards efficient and sustainable technologies. At the forefront of this transformation is the rise of perovskite light-emitting diodes (PeLEDs), which have the potential to redefine traditional optoelectronic applications due to their exceptional properties, including high color purity, solution-processability, and cost-effectiveness. These characteristics have made PeLEDs promising candidates for various applications such as display panels, intelligent lighting, and biological imaging. It's estimated that PeLEDs could contribute to a market valued at 1.5 billion US dollars by 2028. Nevertheless, transitioning PeLEDs from laboratory settings to wide industrial use encounters several technical hurdles, such as maintaining operational efficiency and addressing environmental concerns with current materials.

Despite notable advancements, such as achieving external quantum efficiencies surpassing 20%, PeLEDs still face critical reliability and sustainability issues. Notably, device brightness often declines significantly after prolonged use, and the use of lead-based materials, coupled with the lack of recycling systems, poses environmental risks. To overcome these obstacles, researchers are actively exploring alternatives like lead-free tin-based perovskites, although these alternatives currently yield lower efficiency. Additionally, challenges in achieving uniformity in large-area printing remain unsolved, stalling commercialization potential. The immense potential of PeLEDs lies in surmounting these challenges through innovations in device reliability, solvent-free production methods, and effective recycling solutions.

This Research Topic aims to delve into the comprehensive study of novel optoelectronic functional materials, including both traditional and emerging materials, with the goal of unlocking their potential for sustainable applications. This includes exploring interface regulation, device engineering, and material growth techniques to enhance performance and facilitate commercialization.

To gather further insights into improving PeLEDs and related technologies, we welcome articles addressing, but not limited to, the following themes:
Investigating materials' electronic structures using advanced theoretical and simulation methods.Identifying key factors in the energy conversion process through spectroscopic and optoelectronic analysis.
• Optimizing preparation methods to support industrial applications of optoelectronic materials.
• Improving material surface properties and enhancing optoelectronic performance through advanced modification techniques.
• Modulating material properties such as absorption spectrum, emission wavelength, and carrier mobility.
• Achieving controlled material growth by investigating influences such as temperature, pressure, and reactant concentrations.
• Enhancing device durability through optimized material compositions and advanced packaging technologies.

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Next-generation PeLED technologies for sustainable display and lighting innovations