Crystalline Silicon Solar Cells With Coannealed Electron- and Hole-Selective SiC x Passivating Contacts
| Autor: | Quentin Jeangros, Monica Morales-Masis, Franz-Josef Haug, Esteban Rucavado, Christophe Ballif, Philippe Wyss, Gizem Nogay, Andrea Ingenito, Philipp Löper, Josua Stuckelberger |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Passivation business.industry Doping chemistry.chemical_element 02 engineering and technology Chemical vapor deposition 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 7. Clean energy Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry 0103 physical sciences Electrode Silicon carbide Optoelectronics Wafer Crystalline silicon Electrical and Electronic Engineering 0210 nano-technology business Indium |
| Zdroj: | IEEE Journal of Photovoltaics. 8:1478-1485 |
| ISSN: | 2156-3403 2156-3381 |
| DOI: | 10.1109/jphotov.2018.2866189 |
| Popis: | We present electron- and hole-selective passivating contacts based on wet-chemically grown interfacial SiO x and overlying in-situ doped silicon carbide (SiC x ) deposited by plasma-enhanced chemical vapor deposition. After annealing at 850 °C, excellent surface passivation on the p -type planar crystalline silicon wafer is obtained for both electron- and hole-selective contacts. Their potential is demonstrated at the device level by employing a simple process flow, in which the junction formation of the two polarities is achieved with a single coannealing step. Both-side-contacted patterning-free planar p -type cells with an area of 4 cm2 and screen-printed metallization reach a fill factor of 83.4% and a open-circuit voltage of 726 mV. Zirconium-doped indium oxide with excellent optoelectrical properties is used as a front electrode. The decrease in the parasitic absorption in the front electrode results in higher photogenerated current. By realizing front-side-textured and rear-side-planar p -type cells, an efficiency of up to 22.6% is achieved. |
| Databáze: | OpenAIRE |
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