Hole Transport Materials for Tin-Based Perovskite Solar Cells: Properties, Progress, Prospects.

The power conversion efficiency of modern perovskite solar cells has surpassed that of commercial photovoltaic technology, showing great potential for commercial applications. However, the current high-performance perovskite solar cells all contain toxic lead elements, blocking their progress toward industrialization. Lead-free tin-based perovskite solar cells have attracted tremendous research interest, and more than 14% power conversion efficiency has been achieved.

UV-O treated annealing-free cerium oxide as electron transport layers in flexible planar perovskite solar cells.

Fabricating electron transport layers at low temperatures is challenging but highly desired in the field of flexible perovskite solar cells (f-PSCs). In this study, highly uniform cerium oxide (CeO ) films prepared by the UV-O treatment have been successfully applied as the electron transport layer (ETL) in methylammonium lead halide (CHNHPbI) perovskite-based f-PSCs. Under AM 1.

Metal-organic frameworks at interfaces of hybrid perovskite solar cells for enhanced photovoltaic properties.

In this study, metal-organic frameworks, as an interfacial layer, were introduced into perovskite solar cells (PSCs) for the first time. An interface modified with the metal-organic framework ZIF-8 efficiently enhanced perovskite crystallinity and grain sizes, and the photovoltaic performance of the PSCs was significantly improved, resulting in a maximum PCE of 16.99%.

Highly Efficient Perovskite Solar Cells Based on Zn Ti O Nanoparticles as Electron Transport Material.

Developing ternary metal oxides as electron transport layers (ETLs) for perovskite solar cells is a great challenge in the field of third-generation photovoltaics. In this study, a highly mesoporous Zn Ti O (m-ZTO) scaffold is synthesized by ion-exchange method and used as ETL for the fabrication of methyl ammonium lead halide (CH NH PbI ) perovskite solar cells. The optimized devices exhibit 17.

Incorporating Zn2SnO4 quantum dots and aggregates for enhanced performance in dye-sensitized ZnO solar cells.

The performance of dye-sensitized ZnO solar cells was improved by a facile surface-treatment approach through chemical-bath deposition. After the surface treatment, the quantum dots of Zn(2)SnO(4) were deposited onto ZnO nanoparticles accompanied by the aggregations of Zn(2)SnO(4) nanoparticles. The ZnO film displayed a better resistance to acidic dye solution on account of the deposited Zn(2)SnO(4) nanoparticles.

Photocatalytic bactericidal mechanism of nanoscale TiO2 films on Escherichia coli.

Two kinds of nanoscale TiO2 films were prepared by magnetron sputtering and screen printing methods, respectively. Results show that both phase composition and specific surface area of the film affect the photocatalytic bactericidal efficiency. Time-series in situ atomic force microscopy (AFM) observation were further used to characterize the cellular responses of Escherichia coli (E.

Significant reduction of harmful compounds in tobacco smoke by the use of titanate nanosheets and nanotubes.

Titanate nanosheets and nanotubes have first been introduced into cigarette filter, a great range of harmful compounds including tar, nicotine, ammonia, hydrogen cyanide, selected carbonyls and phenolic compounds can be reduced efficiently.