High efficiency heterojunction solar cells based on quasi-mono-crystal silicon wafers
Heterojunction solar cells based on mono-like silicon wafers (n-type, 244,2 cm2) grown by directional solidification were made. Mono-crystal fraction with crystallographic orientation (100) was more than 95% of the surface of wafer. Solar cells were manufactured on the basis of industrial technology developed in R&D center TFTE for monocrystalline silicon wafers (Cz). Solar cell conversion efficiency on moonlike wafers reached 19,48%. For monocrystalline silicon wafer (Cz) produced as a reference sample in the same process conversion efficiency was 22,89%
Keywords: solar energy, solar module, thin- film technology, amorphous silicon, heterojunction solar cell
References
1. A. Louwen et al. Solar Energy Materials & Solar Cells 147 (2016) 295-314.
2. International Technology Roadmap of Photovoltaic (ITRPV) Results 2016, including maturity report. Eighth Edition, 2017
3. D. Adachi, J. L. Hernбndez, and K. Yamamoto, Impact of carrier recombination on fill factor for large area heterojunction crystalline silicon solar cell with 25,1% efficiency//Applied Physics Letters, 107(23): 233506, 2015.
4. Taguchi et al. 24,7% Record efficiency HIT solar cell on thin silicon//IEEE Journal of Photovoltaics, vol. 4, No. 1, January 2014, pp. 96-99.
5. Crystal Growth Technology/Edited by H. J. Scheel and T. Fukuda, 2003 John Wiley & Sons, Ltd.
6. F. Jay et al. Advanced process for n-type mono-like silicon a-Si:H/c-Si heterojunction solar cells with 21.5% efficiency//Solar Energy Materials and Solar Cells, vol. 130, 2014, pp. 690-695.
7. R. Cabal, B. Grange, L. Bounaas, R. Monna, N. Plassat, E. Pihan, Y. Veschetti. «20% pert technology adapted to n-type monolike silicon:simplified process and narrowed cell efficiency distribution»//29th EU PVSEC and Exhibition, 648-652.
8. J. S. Kang, D. K. Schroder. «Gettering in silicon»//J. Appl. Phys. 65, 2974 (1989).
9. Sieu Pheng Phang et al 2017 Jpn. J. Appl. Phys. 56 08MB10.
10. Hyomin Park, Sung Ju Tark et al. «Effect of the Phosphorus Gettering on Si Heterojunction Solar Cells»//International Journal of Photoenergy, Volume 2012, Article ID 794876, 7 p.
