Applied Physics Letters · 2009 · 117 citations · 6 references
EngineeringMaterials EngineeringMaterials ScienceElectronic MaterialsSemiconductor DevicesSemiconductor MaterialsPhotovoltaic DevicesPhotovoltaic MaterialsSemiconductor Device MaterialsSilicon MaterialsSolar Cell MaterialsSolar CellsAmorphous SiliconArea EfficiencyAtomic Force Microscopy AnalysisHydrogenated Amorphous SiliconNanostructured Solar CellsSilicon Solar CellsSolar Cell CharacterizationTextured Materials
We have studied the effect of texture in Ag/ZnO back reflectors (BRs) on the performance of hydrogenated nanocrystalline silicon (nc-Si:H) solar cells. While a larger texture provides superior light trapping, it also deteriorates the nc-Si:H quality. We have used total and diffused reflection and atomic force microscopy to evaluate the BR texture. A BR with textured Ag and thin ZnO layers has been found to give the best cell performance. Using the optimized BR, we have achieved an initial active-area efficiency of 10.2% in a nc-Si:H single-junction cell and a stable total-area efficiency of 12.5% in a hydrogenated amorphous silicon/nc-Si:H/nc-Si:H triple-junction cell.
6
Hongbo B. T. Li, R.H. Franken, J.K. Rath et al. · Solar Energy Materials and Solar Cells · 2009 · 141 citations · Full text