Treating cadmium-telluride solar cell materials with cadmium-chloride improves their efficiency, but researchers have not fully understood why. Now, an atomic-scale examination of the thin-film solar cells has answered this decades-long debate about the materials' photovoltaic efficiency increase after treatment.
Scientists have developed a very simple method for the modification of membranes through the inclusion of microgels.They report hollow-fiber membranes that demonstrate temperature-dependent flow and retention, thanks to thermoresponsive microgels.
A new nanomembrane made out of graphene is extremely light and breathable. Not only can this open the door to a new generation of functional waterproof clothing, but also to ultra-rapid filtration. The membrane is as thin as is technologically feasible.
With ultra-short laser pulses, chemical reactions can be controlled; electrons have little mass and are therefore influenced by the laser, whereas the atomic nuclei are much heavier and are hardly affected.
In the past few years, perovskite solar cells have made large leaps forward in efficiency, recently achieving energy conversion with up to 16 percent efficiency. These simple and promising devices are easy enough to make and are made up of earth abundant materials, but little work has been done to explore their atomic makeup.
PETA International Science Consortium will present a non-animal tiered-testing strategy for nanomaterial hazard assessment at the 7th International Nanotoxicology Congress being held in Antalya, Turkey on Apr. 23-26, 2014. The proposed strategy will generate meaningful information on nanomaterial properties and their interaction with biological systems.
Quantum simulators recreate the behaviour on a microscopic scale of biological and quantum systems and even of particles moving at the speed of light. The exact knowledge of these systems will lead to applications ranging from more efficient photovoltaic cells to more specific drugs. Researchers are working on the design of several of these quantum simulators so they can study the dynamics of complex physical systems.
Ions are an essential tool in chip manufacturing, but these electrically charged atoms can also be used to produce nano-sieves with homogeneously distributed pores. A particularly large number of electrons, however, must be removed from the atoms for this purpose. Such highly charged ions either lose a surprisingly large amount of energy or almost no energy at all as they pass through a membrane that measures merely one nanometer in thickness. This discovery is an important step towards developing novel types of electronic components made of graphene.
In the quest to make sun power more competitive, researchers are designing ultrathin solar cells that cut material costs. At the same time they're keeping these thin cells efficient by sculpting their surfaces with photovoltaic nanostructures that behave like a molecular hall of mirrors.