title: Optoelectronic Evaluation and Loss Analysis of PEDOT:PSS/Si Hybrid Heterojunction Solar Cells.
abstract: The organic/silicon (Si) hybrid heterojunction solar cells (HHSCs) have attracted considerable attention due to their potential advantages in high efficiency and low cost. However, as a newly arisen photovoltaic device, its current efficiency is still much worse than commercially available Si solar cells. Therefore, a comprehensive and systematical optoelectronic evaluation and loss analysis on this HHSC is therefore highly necessary to fully explore its efficiency potential. Here, a thoroughly optoelectronic simulation is provided on a typical planar polymer poly (3,4-ethylenedioxy thiophene):polystyrenesulfonate (PEDOT:PSS)/Si HHSC. The calculated spectra of reflection and external quantum efficiency (EQE) match well with the experimental results in a full-wavelength range. The losses in current density, which are contributed by both optical losses (i.e., reflection, electrode shield, and parasitic absorption) and electrical recombination (i.e., the bulk and surface recombination), are predicted via carefully addressing the electromagnetic and carrier-transport processes. In addition, the effects of Si doping concentrations and rear surface recombination velocities on the device performance are fully investigated. The results drawn in this study are beneficial to the guidance of designing high-performance PEDOT:PSS/Si HHSCs.
authors.affiliation: Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
authors.forename: Zhenhai
authors.initials: Z
authors.lastname: Yang
authors.affiliation: Department of Physics, Shaoxing University, Shaoxing, 312000, China.
authors.forename: Zebo
authors.initials: Z
authors.lastname: Fang
authors.affiliation: Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
authors.forename: Jiang
authors.initials: J
authors.lastname: Sheng
authors.affiliation: Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
authors.forename: Zhaoheng
authors.initials: Z
authors.lastname: Ling
authors.affiliation: Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
authors.forename: Zhaolang
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
authors.forename: Juye
authors.initials: J
authors.lastname: Zhu
authors.affiliation: Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China. gaopingqi@nimte.ac.cn.
authors.forename: Pingqi
authors.initials: P
authors.lastname: Gao
authors.affiliation: Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
authors.forename: Jichun
authors.initials: J
authors.lastname: Ye
keywords: Hybrid solar cells; Optoelectronic loss; PEDOT:PSS/Si