Optimization of Back-Surface Field for Crystalline Silicon Solar Cells and Estimating the Firing Temperature depending on the Amount of Printed Aluminum


Kanmaz İ., Üzüm A.

Sakarya University Journal of Science, cilt.24, ss.605-614, 2020 (Diğer Kurumların Hakemli Dergileri)

  • Cilt numarası: 24 Konu: 4
  • Basım Tarihi: 2020
  • Doi Numarası: 10.16984/saufenbilder.650790
  • Dergi Adı: Sakarya University Journal of Science
  • Sayfa Sayıları: ss.605-614

Özet

Optimization of the back surface field (BSF) for crystalline silicon solar cells was carried out by Afors-Het simulation software. Thickness and doping concentration parameters were optimized and electrical parameters of solar cells both with BSF and non-BSF were analyzed. The optimum BSF thickness and doping concentration for the crystalline silicon solar cell were determined as 7 µm and 1x1019 cm-3, respectively. A special attention was given to the estimation of peak firing temperature considering the printing amount of aluminum paste in order to form an optimal BSF by the calculations using Al-Si binary phase diagram. It was concluded that the temperature of up to 950oC should be established if an amount of 3 mg/cm2 printed aluminum was used to achieve BSF thickness of 7 µm, where 775 oC would be enough when the amount of aluminum is 8 mg/cm2.