Japanese scientists have proposed a new structure for solar cells with efficiency over 50%
Experts from Japanese universities have developed a new structure of solar panels, which is capable of providing conversion efficiency of over 50%. Performance ideas has already been confirmed experimentally.
The theoretical limit of the efficiency of conventional photovoltaic cells with the same transition is approximately equal to 30%. In other words, a large part of the solar energy not converted into electricity. Record a value that is approximately equal to 46%, achieved using a cell with four transitions.
Japanese researchers have turned to the idea of the heterojunction composed of semiconductors with different width of prohibited zones, thereby managed to reduce the losses. The new structure converts into electricity low energy photons, so the theoretical limit of efficiency is 63%.
As stated, increasing the efficiency will allow you to get the same power with a smaller footprint, significantly reducing the cost of installing solar panels.
Source: Nikkei BP