Jun 01, 2007 18:54
Mitsubishi also plans to present this achievement at the "17th International Photovoltaic Science and Engineering Conference" to be held in Fukuoka in December 2007.
Mitsubishi Electric Achieves World's Highest 18% Conversion Efficiency in Practical Size Polycrystal
This solar cell has incorporated three proprietary technologies in an effort to increase efficiency. Firstly, reflectivity from the acceptance surface has been reduced through RIE (reactive ion etching) microfabrication using a nano-sized mask material. This resulted in the increased amount of absorbed light. Secondly, the lowering of electrical performance in crystalline has been suppressed through a new electrode material. Thirdly, effective electrical output surface area has been expanded by thinning grid collector electrodes. Through these technologies, Mitsubishi achieved the world's highest conversion efficiency of 18%.