UV light and surface defects accelerate the degradation process of perovskite solar cells (PSCs). In their Communication on page 8673, Mingzhu Li, Yanlin Song, co-workers utilize tautomerism “sunscreen” molecules under illumination to protect PSC from enable molecular defect passivation, achieving high efficiency long-term stability PSCs.

Titanium dioxide remains one of the most studied semiconductor for photocatalytic applications due to its low cost production, reduced toxicity, ability break down organic pollutants and possibility achieve complete mineralization. In this work, we report on results activity titanium nanotubes fabricated by electrochemical anodization technique in an electrolyte solution containing a mixture hy...

?n isotype heterojunction n+-ZnO/n-Si photodetector is developed, demonstrating wavelength-selective or broadband operation, depending on the applied bias voltage. Additionally, at self-powered (zero bias) it distinguishes between UV, visible, and near IR (NIR) photons by polarity control of photocurrent. The developed atomic layer deposition (ALD) ZnO n-Si, followed electric contact annealing....

The photocatalytic degradation of phenol in a static-batch photoreactor, using a UV lamp as a light source and TiO 2 as a photocatalyst, was investigated. The effects of various parameters, such as photocatalyst dosage, initial substrate concentration, reaction pH and addition of oxidants, on the phenol degradation rate of TiO 2 photocatalysis were examined. The degradation rates proved to be s...

Actual textile wastewater and synthesized wastewater containing various textile dyes were photocatalytic degraded by the UV-H2O2FS-TiO2 process in an annular-flow photocatalytic reactor. In this process, a photon kinetic-measure was adopted to obtain constant rates of dyes decomposition. It was theorized that, by illumination at different UV frequencies, the electrons within the semiconductor w...

Transferable ZnO tetrapods were grown by an aqueous solution method. An individual ZnO tetrapod-based sensor was fabricated by in situ lift-out technique and its ultraviolet (UV) and gas sensing properties were investigated. This single tetrapod-based device responds to the UV light rapidly and showed a recovery time of about 23 s. The sensitivity of a single ZnO tetrapod sensor to oxygen conce...

The traditional solid-state technique was used to create LaBSiO5 phosphors doped with Ce3+ and Tb3+ at 1,100 °C. These phosphors' phase purity luminous characteristics are looked at. Under ultraviolet (UV) light stimulation, LaBSiO5: emit bright green light, whereas samples incorporated blue-violet light. With UV ray as well illumination. 5d-4f shift for is responsible the radiation, while 5D4→...

To date, the high cost of supplying UV irradiation has prevented widespread application photolysis and titanium dioxide based photocatalysis in removing undesirable organics water treatment sector. overcome this problem, use UV-LEDs (365 nm) for heterogeneous applying TiO2 coated glass beads under UV-LED illumination a pilot scale reactor elimination Microcystis aeruginosa PCC7813 four microcys...

The SnO2 spheres-like nanoparticles have been successfully synthesized by a microwave solvothermal method, in which SnCl2·2H2O, poly(vinylpyrrolidone) PVP, H2O2 and NaOH as raw materials. The as-synthesized products have been characterized by X-ray diffraction, scanning electron microscope, and UV/Vis/NIR spectrophotometer. Photocatalytic activities of the samples have been evaluated by the deg...

A large radius secondary ion mass spectrometer (SIMS) has been used for in situ stable isotope analyses of geological samples at the scale of 1–10 mm. However, the original reflected light microscope of the CAMECA IMS 1280 SIMS had an optical resolution of 3.5 mm, which made it difficult to accurately position the analytical beam on the sample at the mm scale. We modified the optical microscope...