Sentences with phrase «efficiency photovoltaic»

Its glass tiles are, according to Musk «embedded with the highest efficiency photovoltaic cells.»

The solar roof consists of uniquely designed glass tiles that complement the aesthetics of any home, embedded with the highest efficiency photovoltaic cells.

Indeed, his core objection appears to be with technology fixes in general, or the conviction that any bit of technological derring - do — be it a high - efficiency photovoltaic cell or a low - emissions vehicle — will be sufficient to nudge the planet from unpleasant trajectories like global warming.

«These three absorption edges span much of the solar spectrum,» they write, «thus these alloys are good candidates for the multi-band semiconductors envisioned for high efficiency photovoltaic devices.»

Future technologies that need R&D: high - efficiency photovoltaics (say, 50 % conversion)(as well as lowering the cost of PV), energy storage systems for intermittent sources like solar and wind (hydrogen storage, other methods), advances in biofuel technology (for example, hydrogen production from algae, cellulosic ethanol, etc..)

Not exact matches

But we also have an opportunity to enhance our competitiveness in next - generation automotive technology and advanced trains and jets, and could take the lead in emerging markets with solar photovoltaics, bioenergy, unconventional hydro and energy efficiency.

Lyndon Rive is the co-founder and CEO of SolarCity, a provider of clean energy services that designs, finances, and installs photovoltaic systems, performs energy - efficiency audits, and retrofits and builds charging stations for electric vehicles.

Determining the relative efficiency of photosynthesis and photovoltaics is not a simple problem

Researchers have developed a multi-layer anti-reflection (AR) coating for glass surfaces, which reduces the sun's reflection from photovoltaic panels while at the same time improving their efficiency.

«The overall sun - to - electricity efficiency of the hydricity process, averaged over a 24 - hour cycle, is shown to approach 35 percent, which is nearly the efficiency attained by using the best photovoltaic cells along with batteries,» Gençer said.

In the past couple of years, organic - inorganic hybrid perovskites have been solution - processed into thin films or bulk crystals for photovoltaic devices that have reached a 20 - percent power conversion efficiency.

«All the exciting efficiencies and any energy claims that are associated with [perovskite solar cells] should be taken with a grain of salt,» according to Keith Emery, the manager of the National Renewable Energy Laboratory's (NREL) photovoltaic cell and module performance characterisation group in the US.

In recent years, perovskite - based solar cells have raced to the front of emerging photovoltaics, already competing on efficiency against well - established solar technologies such as the inorganic thin - film and multi-crystalline silicon used in solar panels around the world.

A tiny solar cell doubles the efficiency of common photovoltaics» conversion of sunlight to electricity by capturing the energy from a broader spectrum of light.

Nearly doubling the efficiency of a breakthrough photovoltaic cell they created last year, UCLA researchers have developed a two - layer, see - through solar film that could be placed on windows, sunroofs, smartphone displays and other surfaces to harvest energy from the sun.

«This is the highest efficiency ever reported for sunlight conversion into electricity,» UNSW Scientia Professor and Director of the Advanced Centre for Advanced Photovoltaics (ACAP) Professor Martin Green said.

Instead of using titanium oxide or iron oxide, researchers need to explore advances in photovoltaic devices, where the best today achieve an efficiency of 27 per cent, he says.

Buyers who purchase a house from Pardee today can choose from a checklist of energy - conserving options that include high - efficiency fluorescent lighting, photovoltaic cells, a tankless hot - water heater, and an insulated precast concrete foundation.

Centex Homes reports that photovoltaic arrays and a full complement of energy - efficiency upgrades will increase the price of a luxury house by about $ 30,000.

Although they are just a few microns tall, the wires — made of a metal, often silver, and coated in a thin layer of photovoltaic amorphous silicon — can substantially boost efficiency.

He explained that the efficiency of a photovoltaic device is governed by a simple competition: light energy is either converted into waste heat or useful electronic power.

Understanding such processes, together with improved designs that push beyond the theoretical efficiency limits, will have a broad significance with regard to designing new ultra-efficient photovoltaic devices.»

But CIGS has the most potential efficiency (converting as much as 25 percent of incoming sunlight to electricity) of any of the thin - film technologies as well as of traditional photovoltaic cells, Heliovolt's Stanberry says.

«Organic photovoltaic cells of the future: Using charge formation efficiency to screen materials for future devices.»

The study found that, in particular, wind power, biogas, solar photovoltaics, energy efficiency and operational improvements to existing power sources could not only reduce greenhouse emissions but also offset the water used to cool thermal power generation.

The article, «Effect of temperature on carrier formation efficiency in organic photovoltaic cells,» is authored by Yutaka Moritomo, Kouhei Yonezawa and Takeshi Yasuda.

But in the case of photovoltaic (PV) materials, Kurchin explains, it is actually the minority carriers — those that are far less abundant in the material — that are the limiting factor in a device's overall efficiency, and those are much more difficult to measure.

«Now that we have a method to determine the key physical parameter, charge formation efficiency, we're exploring the interrelation between it and the nanoscale structure of the organic photovoltaic device to clarify the mechanism of the charge formation,» noted Moritomo.

For photovoltaics, Venkataraman points out, «The next thing is to make devices with other polymers coming along, to increase power conversion efficiency and to make them on flexible substrates.

Researchers develop method to screen organic materials for organic photovoltaic cells by charge formation efficiency.

«The efficiency of devices such as photovoltaics and LEDs depends on how well excitons move within the material,» he adds.

His work in photovoltaics serves as the basis for commercial modules that hold the current world record in conversion efficiency.

That's because the gas can be used to make several of the layers in a silicon photovoltaic — from the top of the cell where it is used to deposit a layer of silicon nitride that ensures that all sunlight is absorbed, to the bottom where it can be used to deposit another layer that helps reflect back any missed photons of sunlight, boosting the efficiency of the cell at converting light into electricity.

And while wind energy had been growing at an average annual rate of 27 percent and solar photovoltaic, too, was surging as costs fell sharply, so - called clean coal remained a long way off and governments» ambitions for fuel efficiency and electric vehicles were well ahead of reality.

The existing photovoltaics market is dominated by modules made of single - junction silicon solar cells, with efficiencies between 17 % and 24 %.

Zheng said, «Plasmonic - based photovoltaics have typically had low efficiencies, and it hasn't been entirely clear whether those arose from fundamental physical limitations or from less - than - optimal designs.»

While at NREL, Essig co-authored «Realization of GaInP / Si Dual - Junction Solar Cells with 29.8 % 1 - Sun Efficiency,» which was published in the IEEE Journal of Photovoltaics a year ago.

In the past, attempts have been made to create photovoltaics that could be incorporated into textiles, but typically they lacked at least one of the important properties — long - term stability in both air and water, energy efficiency, and robustness including resistance to deformation — that are key to successful devices.

«For photovoltaics, an array of lenses placed atop a solar cell can serve as a light collector to enhance the efficiency of the photovoltaic system by making it less sensitive to the inclination angle of the solar light with respect to the cell surface.»

Bulović says greater efficiencies can be gained from the photovoltaics that power handheld consumer gadgets — but not much more at this point.

«The use of tiny cells for efficiency testing has prompted some to question comparison of perovskite solar cells with other established photovoltaic technologies,» said Nitin Padture, professor of engineering at Brown, director of Brown's Institute for Molecular and Nanoscale Innovation, and one of the senior authors of the new research.

The answer depends not only on efficiency gains in photovoltaic cell technology but also on where those cells are placed on our devices and where we store them — many of us keep our smartphones stuffed in a pocket or handbag for much of the day, out of reach of the sun's energy.

Photovoltaic cells, which absorb photons from sunlight and convert them to electricity, operate with only 20 percent efficiency.

Solar - thermal systems, which turn sunlight into heat and then into electricity, are more efficient than photovoltaics — because they can use the entire solar spectrum, they can reach efficiencies of 30 percent — but they are impossible to scale down to rooftop size.

He is founder and chief technical advisor for two venture - backed photovoltaic companies: Caelux Solar Energy in Pasadena, California, and Alta Devices in Santa Clara, California, which is developing a transformational high efficiency / low cost photovoltaics technology.

Photovoltaic (PV) cells manufactured on glass achieved the highest power outputs reported for a PV technology under typical 200 - 400 lx indoor LED illumination with maximum power densities of MPD = 41.6 µW / cm2 at 400 lx (and power conversion efficiencies, PCE, of 27 %).

EPFL scientists have developed a solar - panel material that can cut down on photovoltaic costs while achieving competitive power - conversion efficiency of 20.2 %.

In 2012, he published his breakthrough discovery of high efficiency solid - state photovoltaics from organic - inorganic metal halide perovskites.

Unfortunately when used indoors the efficiency of the battery's photovoltaics aren't quite at the point where the e-ink display can be operated without an external power source.

Abstract: For the development of concentrator photovoltaic (CPV) module realizing high efficiency, it is necessary to achieve the high efficiency optical system including Fresnel lens and homogenizer.