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Issue 36, 2019
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Carrier recombination and transport dynamics in superstrate solar cells analyzed by modeling the intensity modulated photoresponses

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Abstract

The dynamics of carrier recombination and transport of two CuInS2 superstrate solar cells was studied by intensity modulated photovoltage and photocurrent spectroscopy (IMVS and IMPS respectively). For the analysis of the resulting data two different approaches were implemented. In the first approach, the typically used analysis in Dye Sensitized Solar Cells (DSSC) was adapted to obtain the characteristic times of the processes involved. The second approach was based on the fittings of both the IMVS and IMPS data to the solution of the continuity equation. These fittings allow the calculation of different dynamic parameters of the cells. Moreover, consistency between the obtained parameters was observed, in good agreement with the typical analysis for DSSC. The resulting dynamics was associated with the presence and distribution of defect states among the samples. Moreover, from the performed analysis, a relation between the results and the post-treatment applied to the solar cells could be established. The difference in the dynamics of the cells is mainly observed in the difference between the electron lifetimes of both solar cells.

Graphical abstract: Carrier recombination and transport dynamics in superstrate solar cells analyzed by modeling the intensity modulated photoresponses

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Article information


Submitted
31 Jul 2019
Accepted
28 Aug 2019
First published
29 Aug 2019

Phys. Chem. Chem. Phys., 2019,21, 20360-20371
Article type
Paper

Carrier recombination and transport dynamics in superstrate solar cells analyzed by modeling the intensity modulated photoresponses

C. J. Pereyra, Y. Di Iorio, M. Berruet, M. Vazquez and R. E. Marotti, Phys. Chem. Chem. Phys., 2019, 21, 20360
DOI: 10.1039/C9CP04256C

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