| Autor: |
Andreas Fell, M. Mesec, D. Manz, A. Bentzen, D. H. Neuhaus, Ralf Lüdemann, Daniel Kray, T. Schlenker, E. Sauar, Gerhard Willeke, Bernd Bitnar, Ralph Müller, Monica Aleman, Bernold Richerzhagen, Sybille Hopman, Alexandre Pauchard, Stefan W. Glunz, Kuno Mayer |
| Rok vydání: |
2008 |
| Předmět: |
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| Zdroj: |
2008 33rd IEEE Photovoltaic Specialists Conference. |
| Popis: |
The introduction of selective emitters underneath the front contacts of solar cells can considerably increase the cell efficiency. Thus, cost-effective fabrication methods for this process step would help to reduce the cost per W p of silicon solar cells. Laser Chemical Processing (LCP) is based on the waterjet-guided laser (LaserMicroJet®) developed and commercialized by Synova S.A., but uses a chemical jet. This technology is able to perform local diffusions at high speed and accuracy without the need of masking or any high-temperature step of the entire wafer. We present experimental investigations on simple device structures to choose optimal laser parameters for selective emitter formation. These parameters are used to fabricate high-efficiency oxide-passivated LFC solar cells that exceed 20% efficiency. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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