Hybrid halide perovskite quantum dots for optoelectronics applications: recent progress and perspective
Abstract
Nanotechnology has transformed optoelectronics through quantum dots (QDs), particularly metal halide perovskite QDs (PQDs). PQDs boast high photoluminescent quantum yield, tunable emission, and excellent defect tolerance without extensive passivation. Quantum confinement effects, which refer to the phenomenon where the motion of charge carriers is restricted to a small region, produce discrete energy levels and blue shifts in these materials. They are ideal for next-generation optoelectronic devices prized for superior optical properties, low cost, and straightforward synthesis. In this review, along with the fundamental physics behind the phenomenon, we have covered advances in synthesis methods such as hot injection, ligand-assisted reprecipitation, ultrasonication, solvothermal, and microwave-assisted that enable precise control over size, shape, and stability, enhancing their suitability for LEDs, lasers, and photodetectors. Challenges include lead toxicity and cost, necessitating research into alternative materials and scalable manufacturing. Furthermore, strategies like doping and surface passivation that improve stability and emission control are discussed comprehensively, and how lead halide perovskites like CsPbBr3 undergo phase transitions with temperature, impacting device performance, are also investigated. We have explored various characterization techniques, providing insights into nanocrystal properties and behaviors in our study. This review highlights PQDs’…
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