Nanocrystalline silicon oxide stacks for silicon heterojunction solar cells for hot climates

Jan Haschke, Raphaël Monnard, Luca Antognini, Jean Cattin, Amir Abdallah, Brahim Aissa, Maulid Kivambe, Nouar Tabet, Mathieu Boccard, Christophe Ballif

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Today, solar cells are generally optimized for 25°C, whereas in most climates, especially hot and sunny ones, the operating device temperature is usually much higher, e.g. in the range of 60°C. We investigate the use of n-doped nanocrystalline silicon oxide layers (nc-SiOx:H(n)) as front contact stacks in silicon heterojunction solar cells and compare them with oxide-free front contacts. Whereas a short-circuit current density of 41 mAcm-2 could be obtained due to the increased transparency of the nc-SiOx:H(n) layers, the fill-factor is drastically reduced and leads to a reduced efficiency at 25°C. Albeit the FF can be partly recovered at 60°C, the highest efficiencies at 60°C were so far obtained for the solar cells with oxide-free front contact stacks.

Original languageEnglish
Title of host publicationSiliconPV 2018, the 8th International Conference on Crystalline Silicon Photovoltaics
EditorsRolf Brendel, Jef Poortmans, Arthur Weeber, Giso Hahn, Christophe Ballif, Stefan Glunz, Pierre-Jean Ribeyron
PublisherAmerican Institute of Physics Inc.
Volume1999
ISBN (Print)9780735417151
DOIs
Publication statusPublished - 10 Aug 2018
EventSiliconPV 2018: The 8th International Conference on Crystalline Silicon Photovoltaics - Lausanne, Switzerland
Duration: 19 Mar 201821 Mar 2018

Other

OtherSiliconPV 2018: The 8th International Conference on Crystalline Silicon Photovoltaics
CountrySwitzerland
CityLausanne
Period19/3/1821/3/18

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Haschke, J., Monnard, R., Antognini, L., Cattin, J., Abdallah, A., Aissa, B., Kivambe, M., Tabet, N., Boccard, M., & Ballif, C. (2018). Nanocrystalline silicon oxide stacks for silicon heterojunction solar cells for hot climates. In R. Brendel, J. Poortmans, A. Weeber, G. Hahn, C. Ballif, S. Glunz, & P-J. Ribeyron (Eds.), SiliconPV 2018, the 8th International Conference on Crystalline Silicon Photovoltaics (Vol. 1999). [030001] American Institute of Physics Inc.. https://doi.org/10.1063/1.5049262