Mitsubishi Electric Breaks Two World Records in Solar Cell Conversion Efficiency
The global production of Photovoltaic (PV) cells is expected to reach 8,000 MW by 2012 from its current level of 5,500 MW. At the same time photovoltaic cell manufacturers are constantly trying to achieve more output power through higher conversion efficiency which is the rate the sunlight energy is converted into electricity, while reducing the thickness of PV cells. In addition to this the manufacturer of PV is looking for a way to reduce their dependence on silicon and their market sharp price fluctuation. One such manufacturer that is working toward achieving higher cell conversion efficiency is Mitsubishi Electric. The company made an announcement in achieving two world records in solar cell conversion efficiency in polycrystalline silicon photovoltaic cells, done through reducing loss in the cells.
The first record that has been set by the company is the 19.3% efficiency rating for photoelectric conversion of a partially-sized polycrystalline silicon PV cell of 100 squared centimeters or larger with the PV cell measuring approximately 15 cm x 15 cm x 200 micrometers. The new set record is 0.2 point higher than the company’s previous record of 19.1%. The second set record was related in the same technologies in an ultra-thin polycrystalline silicon PV cell measuring 15 cm x 15 cm x 100 micrometers with achieved conversion efficiency of 18.1%, a 0.7 point improvement over Mitsubishi Electric’s previous record of 17.4%. The conversion efficiency rates all have been confirmed by AIST (Advanced Industrial Science and Technology) in Japan. The company is working toward mass production technology in delivering these high conversion rates in commercial photovoltaic modules. Furthermore, Mitsubishi Electric will work toward further increasing the conversion efficiency rate through utilization of PV inverters capable of high efficiency conversion of DC current to AC.