40% Efficient Solar Cells to be Used for Solar Electricity

Scientists from Spectrolab, a subsidiary of Boeing, have recently published their research on the fabrication of solar cells that surpass the 40% efficiency milestone — the highest efficiency achieved for any photovoltaic device. Most conventional solar cells used in today’s applications, such as for supplemental power for homes and buildings, are one-sun, single-junction silicon cells that use only the light intensity that the sun produces naturally, and have optimal efficiency for a relatively narrow range of photon energies