U.S. naval laboratory developed efficient solar cells

Scientists in the United States naval research laboratory (NRL) in electronic technology and science department together with imperial college London and MicroLink equipment company has designed a has three point of solar battery, the battery has the possibility to break down barriers of the conversion efficiency of 50%. This is the current target junction photovoltaic development.

NRL research physicist Robert Walters said, this research has been completed a novel, the reality can be reached, the lattice match take the solar cell is designed, and the focus lighting conditions have to break the possibility of a power conversion efficiency of 50%. "At the moment, focus lighting the world record for the next three junction solar cell efficiency is 44%, the main technological breakthrough is the need to the efficiency of solar cells more efficient it is generally accepted."

According to the scientists explain, the current challenge is to develop semiconductor material system allows it to achieve a wide range of band gap and high transparent qualitative characteristics at the same time grow together.

Chemical Suppliers, By developing new semiconductor materials and application of band structure engineering in tension balance quantum inoue, NRL team has designed the junction solar cells. The battery using the lattice matching material to indium phosphide (InP) base band gap can be directly to ford from 0.7 to 1.8 electronic band gap.

Walters said "have a wide range of the lattice mismatch through a new band gap materials is the key to break the current world record. It is well known that material indium phosphide lattice matching can be achieved following the band gap of 1.4 eV and 1.4 eV, but did not exist can have a more direct band gap of the ternary alloy semiconductor."