AZO/PEDOT:PSS Polymer Frontal Interface Deposited on Flexible Substrates for a-Si:H Photovoltaic Applications

Mansurova, S.; Cosme, Ismael; Kosarev, A.; Olivares, Antonio J.; Ospina, Carlos; Martinez, H.E.

doi:10.3390/polym10101068

Cited by 5 publications

(1 citation statement)

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“…Analysis of the surface kurtosis and skewness provides relevant information about morphology characteristics and changes related to the post-treatment. Kurtosis reveals whether the morphology of the surface is dominated by sharp (Ku > 3) or bumpy (Ku < 3) shapes [35], while skewness describes whether the morphology is pore (Sk < 0) or peak (Sk > 0) dominated [35]. Based on this, it is observed that the morphology for all samples is dominated by sharper peaks; however, sharpness and peak shapes are reduced by post-treatments, and surface morphology reaches more regularity (Sk ~ 0 and Ku ~ 3) with the increase of aggressivity of drop and dip post-treatments.…”

Section: Resultsmentioning

confidence: 99%

Nanostructural Modification of PEDOT:PSS for High Charge Carrier Collection in Hybrid Frontal Interface of Solar Cells

et al. 2019

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In this work, we propose poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) material to form a hybrid heterojunction with amorphous silicon-based materials for high charge carrier collection at the frontal interface of solar cells. The nanostructural characteristics of PEDOT:PSS layers were modified using post-treatment techniques via isopropyl alcohol (IPA). Atomic force microscopy (AFM), Fourier-transform infrared (FTIR), and Raman spectroscopy demonstrated conformational changes and nanostructural reorganization in the surface of the polymer in order to tailor hybrid interface to be used in the heterojunctions of inorganic solar cells. To prove this concept, hybrid polymer/amorphous silicon solar cells were fabricated. The hybrid PEDOT:PSS/buffer/a-Si:H heterojunction demonstrated high transmittance, reduction of electron diffusion, and enhancement of the internal electric field. Although the structure was a planar superstrate-type configuration and the PEDOT:PSS layer was exposed to glow discharge, the hybrid solar cell reached high efficiency compared to that in similar hybrid solar cells with substrate-type configuration and that in textured well-optimized amorphous silicon solar cells fabricated at low temperature. Thus, we demonstrate that PEDOT:PSS is fully tailored and compatible material with plasma processes and can be a substitute for inorganic p-type layers in inorganic solar cells and related devices with improvement of performance and simplification of fabrication process.

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Section: Resultsmentioning

confidence: 99%