IMB QISKIT FALL FEST:Perovskite Quantum Dots:Synthesis, Optical Properties and Emerging Applications

Perovskite quantum dots (QDs) have emerged as one of the most promising classes of nanomaterials for optoelectronic applications. Their unique combination of strong quantum confinement, size-tunable bandgaps, narrow emission linewidths, and high photoluminescence quantum yields has positioned them at the forefront of next-generation light-emitting devices, lasers, and photovoltaic technologies. Lead-based perovskite QDs, such as CsPbX3_33​ (X = Cl, Br, I), currently demonstrate outstanding optical performance, with emission spanning the visible spectrum and quantum yields exceeding 90%. However, environmental and health concerns related to lead toxicity have driven the search for sustainable alternatives. Lead-free perovskite QDs (e.g., CsSnI3_33​, CsGeBr3_33​, CsCuCl3_33​) are emerging as viable candidates, offering reduced toxicity and potential for biomedical and green optoelectronic applications, although challenges in chemical stability and efficiency remain.
In this talk, I will provide an overview of the fundamental concepts of quantum dots, outline the synthesis routes for perovskite QDs (hot-injection), and compare the optical properties of lead-based and lead-free materials. Finally, I will highlight recent progress, key results, and future perspectives toward achieving stable, efficient, and environmentally sustainable perovskite quantum dots