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Si/PEDOT:PSS Hybrid Solar Cells with Advanced Antireflection and Back Surface Field Designs
Yiling Sun1,2, Zhenhai Yang2, Pingqi Gao2
1School of Energy Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, People's Republic of China.
Abstract:
Molybdenum oxide (MoO3) is one of most suitable antireflection (AR) layers for silicon/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (Si/
Pedot:
PSS) hybrid solar cells due to its well-matched refractive index (2.1). A simulation model was employed to predict the optical characteristics of Si/
Pedot:
PSS hybrid solar cells with the MoO3 layers as antireflection coatings (ARCs), as well as to analyze the loss in current density. By adding an optimum thickness of a 34-nm-thick ARC of MoO3 on the front side and an effective rear back surface field (BSF) of phosphorus-diffused N (+) layer at the rear side, the hybrid cells displayed higher light response in the visible and near infrared regions, boosting a short-circuit current density (J sc) up to 28.7 mA/cm(2). The average power conversion efficiency (PCE) of the Si/
Pedot:
PSS hybrid solar cells was thus increased up to 11.90 %, greater than the value of 9.23 % for the reference devices.
