Energy Procedia · 2011 · 23 citations · 7 references
EngineeringElectrical EngineeringMaterials ScienceElectronic MaterialsSemiconductor DevicesSemiconductor MaterialsPhotovoltaic DevicesSemiconductor Device MaterialsSemiconductor InterfacesSemiconductor SurfacesSilicon MaterialsSolar CellsCrystalline SiliconCrystalline Silicon Solar CellsHeterojunction Solar CellsPassivationSeries ResistanceSiliconSolar Cell FabricationSurface Passivation Layers
This study deals with the development and optimization of Interdigitated Back Contact (IBC) Silicon Heterojunction (Si-HJ) solar cells based on n-type crystalline silicon (c-Si) substrates. Both one-dimensional (1D) and 2D aspects of IBC Si-HJ cells are explored in this work. Rear Emitter (RE) Si-HJ cells are fabricated to study the influence of the emitter stack on 1D resistive losses. It is shown that the rear emitter stack has to be carefully designed to maintain a high surface passivation level without inducing series resistance (RSeries). On IBC Si-HJ structures, the influence of 2D features such as emitter contact fraction are confirmed both experimentally and by modeling. Using the screen printing technology, 25 cm2 IBC Si-HJ structures have been fabricated with an efficiency of 15.7%.
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Generation 3: Improved performance at lower cost
P.J. Cousins, David Smith, Hsin-Chiao Luan et al. · 2010 · 209 citations
Engineering, Manufacturing Engineering, Materials Science +13