Solar cells made with low-cost, nontoxic quantum dots can achieve unprecedented longevity and efficiency, according to a study by Los Alamos National Laboratory and Sharp Corp. The reported solar cells are based on nontoxic quantum dots. These dots are based on copper indium selenide sulfide and are rigorously optimized to reduce charge-carrier losses from surface defects and to provide the most complete coverage of the solar spectrum.
With the help of the x-ray light source PETRA III, researchers in Germany have, for the first time, watched organic solar cells degrade in real time. This work could open new approaches to increasing the stability of this highly promising type of solar cell, which is known for its flexibility and low cost but has a short lifespan.
The energy industry includes a broad array of companies, ranging from multinational oil and gas firms to large and small technology firms. Reducing costs of production is a large driver of R&D in the energy space, and materials development and advanced materials integration are increasingly important in shaping the industry’s R&D investment.
Researchers from the NIST Center for Nanoscale Science and Technology (CNST) have demonstrated a new low-energy electron beam technique and used it to probe the nanoscale electronic properties of grain boundaries and grain interiors in cadmium telluride (CdTe) solar cells. Their results suggest that controlling material properties near the grain boundaries could provide a path for increasing the efficiency of such solar cells.
The solar panel installer SolarCity is beginning to address one of solar power's big drawbacks: The sun doesn't always shine. The solution: big battery packs that will provide backup power while lowering electric bills. The supplier: electric car maker Tesla Motors, whose CEO Elon Musk is also the chairman of SolarCity.
With support from the Photosynthetic Systems Div. at the U.S. Dept. of Energy, researchers in the School of Science at Rensselaer Polytechnic Institute are expanding a successful research program to uncover the minute workings of the photosynthetic protein, Photosystem II. The high-impact research, led by prof. K.V. Lakshmi, seeks to adapt photosynthesis for artificial use as an abundant source of renewable energy.
Researchers in Switzerland have managed to combine antennas and solar cells to work together with unprecedented efficiency in a near future. This is a first step towards more compact and more lightweight satellites. The technology could also be deployed in the autonomous antenna systems used in the aftermath of natural disasters.
When sunlight strikes a photosynthesizing organism, energy flashes between proteins just beneath its surface until it is trapped as separated electric charges. Improbable as it may seem, these tiny hits of energy eventually power the growth and movement of all plants and animals. They are literally the sparks of life.
SunPartner Technologies and 3M Company have announced an agreement to collaborate in product development and technical solutions based on engineered electronics materials from 3M and transparent solar cell technologies from Sunpartner Technologies. The two companies are developing a sustainable wireless transparent micro component that will charge devices while they are being used and exposed to light.
Converting solar energy into storable fuel remains one of the greatest challenges of modern chemistry. Chemists have commonly tried to use indium tin oxide (ITO) because it has transparency, but it also expensive and rare. Researchers at Duke Univ. has created something they hope can replace ITO: copper nanowires fused in a see-through film.
In leaves, two proteins are responsible for photosynthesis, and they perform the conversion of carbon dioxide into oxygen and biomass very efficiently. Scientists have now harnessed this capability by embedding these proteins into complex molecules developed in the laboratory. Their bio-based solar cell creates electron current instead of biomass.
Organic solar cells have long been touted as lightweight, low-cost alternatives to rigid solar panels made of silicon. Dramatic improvements in the efficiency of organic photovoltaics have been made in recent years, yet the fundamental question of how these devices convert sunlight into electricity is still hotly debated. Now a Stanford Univ. research team is weighing in on the controversy.
An interdisciplinary team of researchers has set its sights on improving the materials that make solar energy conversion/photocatalysis possible. Together, they have developed a new form of high-performance solar photocatalyst based on the combination of the titanium dioxide and other “metallic” oxides that greatly enhance the visible light absorption and promote more efficient utilization of the solar spectrum for energy applications.
Researchers from the Univ. of Pennsylvania and Drexel Univ. have experimentally demonstrated a new method for solar cell construction which may ultimately make them less expensive, easier to manufacture and more efficient at harvesting energy from the sun. The breakthrough, which is the result of five years of focused research, relies on specifically designed perovskite crystals that deliver a “bulk” photovoltaic effect.
Playing pop and rock music improves the performance of solar cells, according to new research. The high frequencies and pitch found in pop and rock music cause vibrations that enhanced energy generation in solar cells containing a cluster of 'nanorods', leading to a 40 percent increase in efficiency of the solar cells.
A set of new building technologies introduced by an alliance of Swiss companies makes it possible to heat and cool buildings without the emission of carbon dioxide. One initial key element of the system is a hybrid collector, built into the roof construction, that serves as a photovoltaic system delivering both solar power and heat that is fed to an underground accumulator.
The Swiss Federal Institute of Technology in Lausanne’s new convention center, opening in April 2014, is being equipped with a glass façade composed of dye solar cells. The project, a world’s first for an exterior window, leverages the potential of dye-sensitive solar cells known as Graetzel cells, which are indifferent to the angle of incidence of light that hits them.
Flickering façades, curved monitors, flashing clothing, fluorescent wallpaper, flexible solar cells—and all printable. This is no make-believe vision of the future; it will soon be possible using a new printing process for organic light-emitting diodes.
Thermal radiation from the sun is largely lost on most silicon solar cells. Up-converters transform the infrared radiation into usable light, however. Researchers have now for the first time successfully adapted this effect for use in generating power.
Amit Goyal and his team of research scientists are using copper oxide to redesign the face of solar power. The once-dismissed solar semiconductor, one of the first discovered, is the basis of ongoing research at Oak Ridge National Laboratory, where scientists are creating cheaper and safer alternatives for solar conducting technology.
Researchers at Purdue Univ. have developed prototypes of a water disinfection system to take advantage of ultraviolet (UV) radiation from the sun, which is plentiful in many areas where clean water is lacking. Their water disinfection system pumps water through a UV-transparent pipe placed on a parabolic reflector, effectively magnifying the effect of UV radiation, which damages microorganism DNA.
In new research, scientists have demonstrated that the efficiency of all solar panel designs could be improved by up to 22% by covering their surface with aluminium studs that bend and trap light inside the absorbing layer. At the microscopic level, the studs make the surface of the solar panels look similar to the interlocking building bricks played with by children across the world.
Scientists have created a heat-resistant thermal emitter that could significantly improve the efficiency of solar cells. The novel component is designed to convert heat from the sun into infrared light, which can then be absorbed by solar cells to make electricity. Unlike earlier prototypes that fell apart at temperatures below 1,200 C, the new thermal emitter remains stable at temperatures as high as 1,400 C.
Research by Murdoch Univ., James Cook Univ. and the Univ. of Waterloo in Canada has revealed flaws in the way that the widely used Ångström-Prescott equation links solar radiation to sunshine duration. Ångström-Prescott equation is used extensively in providing radiation readings for agricultural, ecological, meteorological and hydrological models.
Univ. of Wisconsin-Madison researchers working at the intersection of basic and applied science focus on key factors like cost, environmental impacts and sometimes, color. Take, for example, asst. chemistry prof. Trisha Andrew: Researchers in her laboratory are developing next-generation solar cells using chromophores or, in lay terms, dyes.