Journal
OPTICAL MATERIALS
Volume 110, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2020.110475
Keywords
InP; Truncated nanopyramid; FDTD; PEDOT:PSS; Filling ratio
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Funding
- DST SERB [ECR/2017/002369]
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III-V nanostructure-based solar cells (SCs), with remarkable performance improvement in recent years, are considered as promising candidates for next-generation photovoltaics. In this paper, we present a simulation study of a new structure of PEDOT:PSS/InP truncated nanopyramid (TNP) Hybrid Solar Cell (HSC) using a finite difference time domain (FDTD) method. In the TNP-HSC, the nanopyramids (NPs) are flattened from the top to increase the photon capturing capability and then the TNPs are coated with PEDOT:PSS to enhance the light absorption in the long-wavelength region of solar spectral irradiance. Besides, to delineate the mechanism of photo-absorption enhancement in the proposed structure, a rigorous analysis of the electric field and photo generation rate profiles at different wavelengths is performed. The simulation results show that the PEDOT: PSS coated of InP TNP exhibits better performance than uncoated InP NP SCs or planar counterpart. In addition, the optimization of the geometrical parameters of InP TNPs, including period, lattice constant, top surface flatness, and coating thickness, leads to the power conversion efficiency of 24.73%, which is 1.8 times greater than its planar counterpart.
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