Colloidal quantum dots and metal halide perovskite hybridization for solar cell stability and performance enhancement

Abstract

Metal halide perovskites and colloidal quantum dots (QDs) are two emerging class of photoactive materials that has been attracted considerable attention for next-generation high-performance solution-processed solar cells. In particular, the...

Lead Leaching of Perovskite Solar Cells in Aqueous Environments: A Quantitative Investigation

“…Therefore, it is necessary to recognize that other possible sources of Pb exposure exist to cumulate, such as home interiors or school or daycare playgrounds. Finally, it's worth mentioning that Pb leaching of PSCs is on a similar level to solar cells based on PbS QDs, another class of emerging indoor PV technology [ 59,60 ] (Figure S7, Supporting Information), suggesting that mitigating the environmental risks caused by Pb leaching can be a general critical challenge toward the commercialization of multiple technologies based on emerging Pb‐based semiconductors.…”

Solution-processed colloidal quantum dots for light emission

“…Materials Advances are easy to manufacture and integrate and hence have found use in many different electronic devices such as lasers, lightemitting diodes (LEDs), 29,30,32,[35][36][37] batteries, 31 solar cells and photodetectors, 33,34,[38][39][40][41] see Fig. 5c.…”

Combining Perovskites and Quantum Dots: Synthesis, Characterization, and Applications in Solar Cells, LEDs, and Photodetectors

“…[41][42][43] The tunable bandgap of the QDs up to the NIR region also gives the opportunity for the complimentary light-harvesting which extends the absorption from visible to the NIR region with QD-enhanced light collection. [38,41,42] Another significant objective for the generation of the nano heterojunction composed of discrete QDs and PS by chemical bonding or physical contact is to manage interfacial band alignment for efficient carrier transport and rapid extraction of charge carriers by creating interfacial dipole. [42,44,45] This directly influences and enhances the fill factor, short-circuit photocurrent, and PCE.…”

“…The primary goals for the formation of the QD/PS hybrids are increasing the stability, enhancing energy level alignment, and efficient charge extraction. [38,[41][42][43] The incorporation, and/or passivation of the QDs in the perovskite matrix endorse superior crystallization with better morphology. Uniformly distributed QDs with hydrophobic ligands reduce the trap state density and protect the surface from moisture-induced degradation as well.…”

“…[38,41,42] Another significant objective for the generation of the nano heterojunction composed of discrete QDs and PS by chemical bonding or physical contact is to manage interfacial band alignment for efficient carrier transport and rapid extraction of charge carriers by creating interfacial dipole. [42,44,45] This directly influences and enhances the fill factor, short-circuit photocurrent, and PCE. [44][45][46] Therefore, designing potential QD/PS hybrid materials where the constructive synergies can disseminate the properties of individual materials, enhance, and/or generate new ones is undoubtedly a potential challenge for material scientists.…”