Progress towards Third Generation Solar Energy Conversion: Can Quantum Dot Solar Cells exceed the Shockley-Queisser Limit?

submitted by: RASEIBoulder
Summary: Power conversion efficiency is one of the most important parameters that can directly affect the overall cost of a PV installation. In the Shockley-Queisser detailed balanced analysis, the power conversion efficiency is limited to ~33% for a single light absorbing layer. The major energy loss occurs from the excess photon energy, energy greater than the semiconductor bandgap, which is lost as heat through electron-phonon coupling and subsequent phonon relaxation and energy...