Publication date: 22nd July 2026
Abstract
Perovskite nanocrystals have emerged as one of the most promising semiconductor materials for next-generation optoelectronic applications due to their exceptional optical properties, including high photoluminescence quantum yield, narrow emission bandwidth, tunable bandgap, and solution-processability. These unique characteristics have enabled their widespread investigation for applications such as light-emitting diodes (LEDs), solar cells, lasers, and photodetectors. However, the conventional synthesis of perovskite nanocrystals relies on large volumes of organic solvents, generating significant chemical waste and increasing the environmental and economic costs of production.(1)
In this work, a sustainable strategy for perovskite nanocrystal synthesis is proposed through the recycling and reuse of the reaction solvent. Following each synthesis, the solvent is recovered, purified, and employed for the subsequent batch of nanocrystal synthesis to evaluate its influence on crystal growth, morphology, optical properties, and reproducibility. The resulting nanocrystals are then utilized as the emissive layer in LED device fabrication to investigate the effect of recycled solvents on device performance, including luminance, efficiency, and operational stability. (2)This approach aims to reduce solvent consumption and chemical waste while maintaining the high quality of perovskite nanocrystals, offering a practical pathway toward environmentally sustainable and cost-effective manufacturing of perovskite-based optoelectronic devices.
S.S. gratefully acknowledges funding from the EIC Pathfinder Challenges project 101162112 (RADIANT) and instrumental support from CACTI.
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