Tailoring the Nanoporosity and Photoactivity of Metal-Organic Frameworks With Rigid Dye Modulators for Toluene Purification.

Facile synthesis of hierarchically porous metal-organic frameworks (MOFs) with adjustable porosity and high crystallinity attracts great attention yet remains challenging. Herein, a micromolar amount of dye-based modulator (Rhodamine B (RhB)) is employed to easily and controllably tailor the pore size of a Ti-based metal-organic framework (MIL-125-NH ). The RhB used in this method is easily removed by washing or photodegradation, avoiding secondary posttreatment.

High-Valent Iodoplumbate-Rich Perovskite Precursor Solution Solar Illumination for Reproducible Power Conversion Efficiency.

The power conversion efficiency (PCE) of solution-processed organic-inorganic hybrid perovskite solar cells has been drastically improved. Despite this considerable progress, systematic research on precursor solution chemistry and its effects on photovoltaic parameters has been limited thus far. Herein, we report on the tracking of changes in chemical species in a precursor solution under solar illumination and investigate the correlation between the equilibrium change and the corresponding perovskite film formation.

Band Alignment Engineering between Planar SnO and Halide Perovskites via Two-Step Annealing.

Managing defects in SnO is critical for improving the power conversion efficiency (PCE) of halide perovskite-based solar cells. However, typically reported SnObased perovskite solar cells have inherent defects in the SnO layer, which lead to a lower PCE and hysteresis. Here, we report that a dual-coating approach for SnO with different annealing temperatures can simultaneously form a SnO layer with high crystallinity and uniform surface coverage.