Publication date: 11th March 2026
Metal-organic frameworks (MOFs) consist of organic binders and metal ions or clusters, and possess characteristics such as large surface area, high porosity, and flexible customizability [1]. In applications of perovskite/MOF hybrids, it is possible to construct a microporous scaffold to regulate the growth of perovskite layers using MOFs. This provides improved perovskite crystallinity at the perovskite interface, charge extraction efficiency, inhibits charge recombination, improves film quality, and enhances the resulting device stability [2]. In this study, the synthesis of a known MOF type, UiO-66-NH2, was carried out and functionalized with anthranilic acid containing carboxylic acid and NH2 groups to achieve better charge transfer, reduced defect density, and consequently improved solar cell performance. FTIR and RAMAN analyses of UiO-66-NH2 and functionalized UiO-66-NH2 structures were performed to investigate which bonds were involved in the functionalization process. Powder XRD analyses showed that the MOF structures were preserved as a result of the functionalization process, while thin-film XRD revealed that the quality of the film crystallinity improved when perovskite was coated onto the MOF. I-V and IPCE measurements were performed for films with FTO/SnO2/Functional-MOF/Perovskite/Spiro-OMeTAD/MoO3/Ag structures, and an increase in short-circuit currents and consequently an increase in efficiency compared to standard solar cells were observed. Impedance measurements were also performed to better understand the recombination mechanisms in the devices. Our approach of using the anthranilic acid-functionalized UiO-66-NH2 MOF structure in perovskite solar cells increases charge transfer and consequently increases efficiency, thus paving the way for future studies on the improvement and scalable production of perovskite solar cells.
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