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Reported timeline of research solar cell energy conversion efficiencies since 1976 (National Renewable Energy Laboratory). Solar-cell efficiency is the portion of energy in the form of sunlight that can be converted via photovoltaics into electricity by the solar cell.
In August 2014 First Solar announced a device with 21.1% conversion efficiency. [42] In February 2016, First Solar announced that they had reached a record 22.1% conversion efficiency in their CdTe cells. In 2014, the record module efficiency was also raised by First Solar from 16.1% up to 17.0%. [43]
Another possibility for increased efficiency is to convert the frequency of light down towards the bandgap energy with a fluorescent material. In particular, to exceed the Shockley–Queisser limit, it is necessary for the fluorescent material to convert a single high-energy photon into several lower-energy ones (quantum efficiency > 1). For ...
The lightweight solar panels, developed by researchers in Australia and the UK, were able to convert 11 per cent of the Sun’s energy into electricity, making them suitable for commercial use.
[37] [38] Currently, [needs update] the best achieved sunlight conversion rate (solar module efficiency) is around 21.5% in new commercial products [39] typically lower than the efficiencies of their cells in isolation. The most efficient mass-produced solar modules have power density values of up to 175 W/m 2 (16.22 W/ft 2). [40]
Recent developments in organic photovoltaic cells (OPVs) have made significant advancements in power conversion efficiency from 3% to over 15% since their introduction in the 1980s. [148] To date, the highest reported power conversion efficiency ranges 6.7–8.94% for small molecule, 8.4–10.6% for polymer OPVs, and 7–21% for perovskite OPVs.
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