Material Engineering Strategies for Boosting Performance and Stability of Quantum Dot and Perovskite Photovoltaics

Abstract

Metal-halide perovskites and PbS quantum dots (CQDs) are recognized for their superb optoelectronic properties, positioning them as crucial materials for the next generation of solar cells. Advances in this field have pushed power conversion efficiencies (PCE) to 12.43% for PbS CQDs and 26.1% for perovskites. Despite this progress, there remain significant challenges, including the need for efficient charge transport and the development of sophisticated material and device architectures. A particular problem in CQD solar cells is the accumulation of holes due to mismatches in Fermi levels, which restricts further improvements in performance. Additionally, the natural vulnerability of perovskites to oxygen and moisture, particularly at grain boundaries created during film production, undermines the stability of devices. This presentation will delve into these issues facing perovskite and CQD solar cell advancements and will outline possible solutions for enhancing their performance.