The enhancement in cell performance of CdTe-based solar cell with Si/SiO(2)distributed Bragg reflectors

Özen Y.

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, cilt.126, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 126
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1007/s00339-020-03808-8


In this study, the very effective design that is Distributed Bragg Reflectors (DBRs) technique and Back Surface Field (BSF) layer are used to fabricate the high-efficiency CdTe-based solar cells. The CdTe-based thin-film solar cells are fabricated asSiO(2)/Si(DBR)/ZnTe (BSF)/CdTe/CdS/ZnO/FTO. Then, the effects of different number of DBRs layers on CdTe-based solar cell are investigated. 68.77% reflection intensity can be obtained even in 1 period and reflection intensity can reach 99.28% in 3 periods. Significant improvement in cell output parameters are observed with increasing DBRs up to 3 periods. The highestJ(SC), FFand eta values are obtained as 109.82 A/m(2), 82.03% and 10.39%, respectively. With the rise in the DBR period, the long wavelength tail of the reflection spectrum is drawn into the center of the reflection band and the long wavelength reflectivity is reduced. This narrowing reduces the rate of reflection of low-energy photons that cannot be absorbed by CdTe layer.