john121  

Massachusetts Institute of Technology (MIT) research team announced the discovery of thin film solar cells can convert 50 percent efficiency. The team use computer simulations to design thin film solar cells, and through the Institute of Experimental confirmed the results of the above.

  By 2μm thick silicon thin film on the set of anti-reflective film, and solar cells in the back of the combination of multi-layer reflective membrane and the use of diffraction grating, so that the solar cell output power than the original by 50%. As the solar cells installed in the back of the multi-layer reflective film so that the sunlight in the silicon thin film lasted for a longer period of time in reflection, thereby increasing efficiency.

  The team for the width of the diffraction grating, and the thickness of silicon  solar cells  on the back of the reflective layer, taking into account a variety of changes in the portfolio, repeated thousands of times the simulation. "The key is launched into solar reflector of sunlight in the distance across the silicon in a longer" participate in the project of MIT Electronics Research Laboratory of post-doctoral research fellow Peter Bermel said,

  The team will continue through the simulation as well as the Institute carried out experiments, the technical fine-tuning. After that study is scheduled to manufacturing processes and materials. 3 years and strive to achieve practical level.