Dual-Absorber Solar Cell Design and Simulation Based on SbSe and CZTGSe for High-Efficiency Solar Cells.

Inorganic solar cells based on the binary-type metal chalcogenide semiconductor, particularly SbSe, have recently garnered significant interest due to their abundant and nontoxic natural elements, strong thermal stability, and favorable optoelectronic properties. Single-absorber solar cells using antimony selenide have been the most common choice to date but have shown only limited efficiency in converting sunlight into electricity. The primary aim of this research is to examine a device structure that demonstrates an enhanced efficiency.

Impact of absorber layer thickness, defect density, and operating temperature on the performance of MAPbI solar cells based on ZnO electron transporting material.

Hybrid organic-inorganic perovskite solar cells (PSCs) are the novel fourth-generation solar cells, with impressive progress in the last few years. MAPbI is a cost-effective material used as an absorber layer in PSCs. Due to the different diffusion length of carriers, the electron transporting material (ETM) plays a vital role in PSCs' performance.

Efficacy and acceptance of a commercial Hoodia parviflora product for support of appetite and weight control in a consumer trial.

Species of Hoodia Sweet ex Decne., family Apocynaceae, a southern African succulent plant, have been recognized for their appetite suppressing properties. Products that support appetite and weight control have been developed in Israel from locally cultivated Hoodia spp.

Reduced risk trajectory planning in image-guided keyhole neurosurgery.

Purpose: The authors present and evaluate a new preoperative planning method and computer software designed to reduce the risk of candidate trajectories for straight rigid tool insertion in image-guided keyhole neurosurgery.

Methods: Trajectories are computed based on the surgeon-defined target and a candidate entry point area on the outer head surface on preoperative CT/MRI scans. A multiparameter risk card provides an estimate of the risk of each trajectory according to its proximity to critical brain structures.

Photoluminescence of as-grown silicon nanocrystals embedded in silicon nitride: influence of atomic hydrogen abundance.

Silicon nanocrystals embedded in silicon nitride films were grown by direct plasma enhanced chemical vapor deposition at 300 degrees C, using mixtures of SiH2Cl2/NH3/H2/Ar. The films composition and chemical stability was tested by Fourier Transform Infrared Spectroscopy and Rutherford Backscattering Spectroscopy. The influence of hydrogen abundance during the deposition process on the photoluminescence of as-grown samples was studied as a function of the radiofrequency power and hydrogen dilution flow rate.