Energy & Green Tech

Perovskite solar cell technology goes greener with antinomy

A team of researchers led by Center for Hybrid and Organic Solar Energy (CHOSE), Electronic Engineering Department at Tor Vergata University of Rome has developed the first air-stable lead (Pb) and tin (Sn)-free perovskite ...

Energy & Green Tech

X-rays light the way to more stable solar cell materials

Using the bright X-rays of the Advanced Photon Source and a custom-built characterization platform, scientists have traced the ion movements inside perovskites, a potential material for new solar energy harvesting devices.

Energy & Green Tech

Organic solar module sets world record with 14.46% efficiency

Solar energy is one of the great hopes when it comes to the energy transition. Research in this future-oriented field is accordingly extensive. One of the biggest challenges is finding the perfect material. In terms of efficiency, ...

Energy & Green Tech

UK's iconic King's College Chapel gets controversial solar makeover

High above the historic streets of Cambridge in eastern England, the installation of solar panels atop King's College Chapel, the world-famous university's most recognizable landmark, has stirred excitement—and controversy.

Energy & Green Tech

Iraq inches toward solar-powered future

In a small village in the mountains of Iraqi Kurdistan, solar panels adorn most homes, part of a small but growing effort to harness the sun's energy in Iraq, where electricity is scarce.

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Photovoltaics

Photovoltaics (PV) is a method of generating electrical power by converting solar radiation into direct current electricity using semiconductors that exhibit the photovoltaic effect. Photovoltaic power generation employs solar panels composed of a number of solar cells containing a photovoltaic material. Materials presently used for photovoltaics include monocrystalline silicon, polycrystalline silicon, amorphous silicon, cadmium telluride, and copper indium gallium selenide/sulfide. Due to the growing demand for renewable energy sources, the manufacturing of solar cells and photovoltaic arrays has advanced considerably in recent years.

Solar photovoltaics is growing rapidly, albeit from a small base, to a total global capacity of 40,000 MW at the end of 2010. More than 100 countries use solar PV. Some 24 GW of solar is projected in November 2011 to be installed in that year, pushing up worldwide capacity to roughly 64 GW. Installations may be ground-mounted (and sometimes integrated with farming and grazing) or built into the roof or walls of a building (building-integrated photovoltaics).

Driven by advances in technology and increases in manufacturing scale and sophistication, the cost of photovoltaics has declined steadily since the first solar cells were manufactured. Net metering and financial incentives, such as preferential feed-in tariffs for solar-generated electricity, have supported solar PV installations in many countries.

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