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Optimizing TCO Layers for Novel Bifacial Crystalline Silicon Homojunction Solar Cells Integrating Passivated Contacts
E. Bruhat, T. Desrues, D. Blanc-PĂ©lissier, B. Grange, S. Dubois
TCO, Homojunction, Implantation, Solar Cells, Passivated Contact
Silicon Cells
Subtopic: Homojunction Solar Cells
Event: 35th European Photovoltaic Solar Energy Conference and Exhibition
Session: 2AV.2.38
610 - 613
ISBN: 3-936338-50-7
Paper DOI: 10.4229/35thEUPVSEC20182018-2AV.2.38
0,00 EUR
Document(s): paper, poster


This study explores the needed properties of both Transparent Conductive Oxides (TCOs) and the emitter region for bifacial homojunction solar cells with potentially passivated contacts. TCO layers with different electrical and optical properties have been tested on both sides of n-type homojunction cells for different resistivity of the boron doped region. The high lateral conductivity provided by the diffused emitter and back surface field (BSF) greatly reduces the constraints on TCO electrical properties in such structures. An understanding of the required properties of TCO for advanced homojunction applications is given. All in all moderately conductive TCOs on resistive junctions are shown to be suitable for such applications, allowing better optical properties and limitation of the recombinations losses without inducing resistive losses in the devices.