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标题：MOF-derived Co ²⁺-doped TiO ₂ nanoparticles as photoanodes for dye-sensitized solar cells
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作者：R. Krishnapriya ; C. Nizamudeen ; B. Saini 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2021
卷号：11
DOI：10.1038/s41598-021-95844-4
语种：English
出版社：Springer Nature
摘要：Facile synthesis and application of nano-sized semiconductor metal oxides for optoelectronic devices have always affected fabrication challenges since it involves multi-step synthesis processes. In this regard, semiconductor oxides derived directly from metal–organic frameworks (MOFs) routes have gained a great deal of scientific interest owing to their high specific surface area, regular and tunable pore structures. Exploring the application potential of these MOF-derived semiconductor oxides systems for clean energy conversion and storage devices is currently a hot topic of research. In this study, titanium-based MIL-125(Ti) MOFs were used as a precursor to synthesize cobalt-doped TiO 2-based dye-sensitized solar cells (DSSCs) for the first time. The thermal decomposition of the MOF precursor under an air atmosphere at 400 °C resulted in mesoporous anatase-type TiO 2 nanoparticles (NPs) of uniform morphology, large surface area with narrow pore distribution. The Co 2+ doping in TiO 2 leads to enhanced light absorption in the visible region. When used as photoanode in DSSCs, a good power conversion efficiency (PCE) of 6.86% with good photocurrent density ( Jsc) of 13.96 mA cm −2 was obtained with the lowest recombination resistance and the longest electron lifetime, which is better than the performance of the pristine TiO 2-based photoanode.