AIP conference proceedings · 1996 · 26 citations · 0 references
EngineeringMaterials EngineeringMaterials ScienceOptoelectronicsSemiconductor DevicesSemiconductor MaterialsPhotovoltaic DevicesPhotovoltaic MaterialsSemiconductor Device MaterialsSolar Cell MaterialsSolar CellsSolar Photovoltaic SystemsAbsorber MaterialsContact ResistanceElectrical Contact ResistanceEquivalent Series ResistanceFree-carrier AbsorptionPhotovoltaic SystemsSeries ResistanceWide Bandgap Semiconductor Applications
The back surface reflector (BSR) represents the spectral‐control technology that offers the highest spectral utilization factor, Fu, where Fu is defined as the fraction of the total absorbed radiation with energy greater than the semiconductor bandgap. In order for this technology to succeed, an integrated photovoltaic cell—spectral control thermophotovoltaic device design is required which simultaneously minimizes free carrier absorption and series resistance losses. For this study, BSR technology was developed for GaSb, InAs, and InP substrate systems. Reflection and contact resistance results will be presented for the above material systems. To date, Fu≳80% have been obtained for all three material systems, with potential for Fu≳90%.