Recent progress in InP solar cell research

Significant new developments in InP solar cell research are reviewed. Recent accomplishments include monolithic multibandgap two junction cells (three and two terminal) using InP as the top cell and lattice matched GaInAs and GaInAsP as the bottom, low bandgap, component. Concentrator cells include the three terminal multibandgap cell and an n + p cell using an InP substrate. The review also includes small scale production of ITO/InP cells and results for n+p InP and ITO/InP cells in space on board the LIPS 3 satellite.