Dye-sensitized solar cell based on blood mimetic thixotropy sol-gel electrolyte

Blood mimetic thixotropy sol-gel electrolytes were prepared and sandwiched between dye-coated porous TiO(2) and a platinum counter-electrode to form a dye-sensitized solar cell. The highest overall conversion efficiency of 6.45%, and the fill factor of 0.74 under the white light irradiation AM 1.5 (100 mW cm(-2)) were obtained.     

Sensitive and Selective Detection of Antibiotic D-Penicillamine Based on a Dual-Mode Probe of Fluorescent Carbon Dots and Gold Nanoparticles

This paper reported a dual-mode probe for D-penicillamine on the basis of pH-mediated gold nanoparticles aggregation and fluorescence resonance energy transfer (FRET) from carbon dots. D-penicillamine is a zwitterionic compound and has different forms depending on specific pH ranges. The thiol group of D-penicillamine has high affinity towards the surface of gold nanoparticles and can replace other surface ligands. When pH values were close to its isoelectrical point (pH(I)), the D-penicillamine capped gold nanoparticles aggregated through hydrogen bonding or electrostatic interactions, resulting in the releasing of carbon dots from gold nanoparticles. The dual-mode probe consisted of fluorescent carbon dots and gold nanoparticles, and the fluorescence of carbon dots was quenched by the attached gold nanoparticles due to the FRET. Then, the fluorescence can be recovered in presence of D-penicillamine due to the gold nanoparticles aggregation in specific pH range. Under the optimum conditions, the probe has linear response for D-penicillamine in the 0.25–1.5 μM concentration range with a detection limit of 0.085 μM. This method provides a potential application in sensitive detection of D-penicillamine.     

Highly Luminescent One-Dimensional Organic–Inorganic Hybrid Double-Perovskite-Inspired Materials for Single-Component Warm White-Light-Emitting Diodes

Double perovskites (DPs) are one of the most promising candidates for developing white light-emitting diodes (WLEDs) owing to their intrinsic broadband emission from self-trapped excitons (STEs). Translation of three-dimensional (3D) DPs to one-dimensional (1D) analogues, which could break the octahedral tolerance factor limit, is so far remaining unexplored. Herein, by employing a fluorinated organic cation, we report a series of highly luminescent 1D DP-inspired materials, (DFPD)₂M^IInBr₆ (DFPD=4,4-difluoropiperidinium, M^I=K⁺ and Rb⁺). Highly efficient warm-white photoluminescence quantum yield of 92 % is achieved by doping 0.3 % Sb³⁺ in (DFPD)₂KInBr₆. Furthermore, single-component warm-WLEDs fabricated with (DFPD)₂KInBr₆:Sb yield a luminance of 300 cd/m², which is one of the best-performing lead-free metal-halides WLEDs reported so far. Our study expands the scope of In-based metal-halides from 3D to 1D, which exhibit superior optical performances and broad application prospects.     

Study of corrosion rate control mechanism based on magnetorheological electro-Fenton composite polishing of single-crystal GaN wafers

Journal of Solid State Electrochemistry - A magnetorheological electro-Fenton composite polishing technology was proposed that enables chemical and mechanical “double enhancement” of...