EPFL (École polytechnique fédérale de Lausanne)

Address:
CE 3 316 (Centre Est),
Station 1,
Lausanne
CH-1015
Switzerland

Phone: +41 21 693 11 11

Web: http://www.epfl.ch/


EPFL (École polytechnique fédérale de Lausanne) articles

Displaying 1 - 10 of 10

Startup makes residential solar panels twice as efficient

Startup makes residential solar panels twice as efficient
With a 36% yield, the solar panels developed by startup Insolight could deliver up to twice as much energy as traditional panels. The company came up with a thin structure that directs the sun’s rays to the small surface area of very high performance solar cells. The result is a highly efficient flat photovoltaic system.
7th September 2016

Does Switzerland need more dams and reservoirs?

Does Switzerland need more dams and reservoirs?
The tense economic situation and the high supply of subsidised energy from solar, wind, and coal in Europe has made it difficult for Swiss hydropower to remain economically competitive. The facilities and production of future hydropower projects must be more flexible in order to successfully face an uncertain market and to increase the security of supply in Switzerland.
2nd September 2016

Predicting the future of advanced solar cells

In a photovoltaic cell, light generates opposite charges in the active layer. The charges must then be separated as quickly as possible to keep them from recombining. Positive charges are driven by a built-in electric field to one metallic contact, while negative charges migrate in the opposite direction to another electrode. Using a unique ultra-fast spectroscopic technique, EPFL scientists have now been able to track the fate of charged pairs in an advanced type of solar cells currently under intense research.
2nd September 2016


Train windows that combine mobile reception and thermal insulation

Train windows that combine mobile reception and thermal insulation
Researchers from EPFL have developed a type of glass that offers excellent energy efficiency and lets mobile telephone signals through. And by teaming up with Swiss manufacturers, they have produced innovative windows. Railway company BLS is about to install them on some of its trains in order to improve energy efficiency.
30th August 2016

A low-cost solution for storing solar energy

A low-cost solution for storing solar energy
How can we store solar energy for period when the sun doesn't shine? One solution is to convert it into hydrogen through water electrolysis. The idea is to use the electrical current produced by a solar panel to 'split' water molecules into hydrogen and oxygen. Clean hydrogen can then be stored away for future use to produce electricity on demand, or even as a fuel. But this is where things get complicated.
25th August 2016

System generates electricity from osmosis

System generates electricity from osmosis
Proponents of clean energy will soon have a new source to add to their existing array of solar, wind, and hydropower: osmotic power. Or more specifically, energy generated by a natural phenomenon occurring when fresh water comes into contact with seawater through a membrane. Researchers at EPFL's Laboratory of Nanoscale Biology have developed an osmotic power generation system that delivers never-before-seen yields.
14th July 2016

Perovskite solar cells surpass 20% efficiency

Perovskite solar cells surpass 20% efficiency
EPFL researchers are pushing the limits of perovskite solar cell performance by exploring the best way to grow these crystals. Michael Graetzel and his team found that, by briefly reducing the pressure while fabricating perovskite crystals, they were able to achieve the highest performance ever measured for larger-size perovskite solar cells, reaching over 20% efficiency and matching the performance of conventional thin-film solar cells of similar sizes. Their results are published in Science.
10th June 2016

Perovskite solar cells hit 21.1% efficiency and record reproduciblity

Perovskite solar cells hit 21.1% efficiency and record reproduciblity
Perovskite solar cells show promise for cost-effective solar energy but heat stability is still an issue. This has been addressed by mixing perovskite materials with inorganic cesium to improve the solar cell’s thermal and structural stability. Using this approach, EPFL scientists have now developed a cesium-containing perovskite solar cell that has achieved efficiency of 21.1%, as well as record-level reproducibility.
17th March 2016

Generate electricity with cardboard, tape & a pencil

Generate electricity with cardboard, tape & a pencil
Researchers from EPFL, working with researchers from the University of Tokyo, have discovered that a small device made from everyday materials can generate more than 3V - enough energy to power several diodes. The team used cardboard, Teflon tape and a pencil to make an 8cm2 device that can generate a considerable power: this simple, eco-friendly and inexpensive system can operate a remote micro- sensor or system.
27th January 2016

Material achieves 20.2% efficiency & lowers PV cost

Material achieves 20.2% efficiency & lowers PV cost
Some of the most promising solar cells today use light-harvesting films made from perovskites - a group of materials that share a characteristic molecular structure. However, perovskite-based solar cells use expensive 'hole-transporting' materials, whose function is to move the positive charges that are generated when light hits the perovskite film.
21st January 2016


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