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Improved silicon surface passivation by hybrid composites formed by PEDOT:PSS with anatase TiO_2 nanoparticles

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Vázquez López, Antonio and Yaseen, Anisa and Maestre Varea, David and Ramírez Castellanos, Julio and Karazhanov, Smagul Zh and Marstein, Erik S and Cremades Rodríguez, Ana Isabel (2020) Improved silicon surface passivation by hybrid composites formed by PEDOT:PSS with anatase TiO_2 nanoparticles. Materials letters, 271 . ISSN 0167-577X

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Official URL: http://dx.doi.org/10.1016/j.matlet.2020.127802


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Abstract

In this work, hybrid composites formed by PEDOT:PSS (poly(3,4-ethylene dioxythiophene):-polystyrene sulfonate) and anatase TiO_2 nanoparticles synthesized by hydrolysis were spin-coated on Si substrates in order to evaluate their potential implementation in Si-hybrid solar cells, based on their passivation behaviour. X-ray diffraction (XRD), photoluminescence (PL), Raman spectroscopy, quasi-steady state photoconductance (QSS-PC) based on PL imaging, and Hall effect measurements were carried out for the structural, optical and electrical characterization. Enhanced carrier lifetime values of tau similar to 0.5 ms were obtained by adding a controlled amount of TiO_2 nanoparticles (0.5% wt.) to the PEDOT:PSS matrix.


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©2020 Elsevier B.V. All rights reserved
This research was funded by the MINECO/FEDER/M-ERA.Net projects MAT-2015-65274-R/FEDER, RTI2018-097195-B-I00 and M-ERA.NET PCIN-2017-106. SZK, and ESM have received financial support from M-ERA.net project 272806 by the Research Council of Norway.

Uncontrolled Keywords:Electrodes; Hybrid composite; TiO_2; Nanoparticles; PEDOT:PSS; Si-passivation
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:61487
Deposited On:29 Jul 2020 11:16
Last Modified:29 Jul 2020 11:16

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