Analytical model for light modulating impedance spectroscopy (LIMIS) in all-solid-state p-n junction solar cells at open-circuit
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comunitat-uji-handle2:10234/160292
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Title
Analytical model for light modulating impedance spectroscopy (LIMIS) in all-solid-state p-n junction solar cells at open-circuitAuthor (s)
Date
2010-01-02Publisher
American Institute of PhysicsISSN
0003-6951; 1077-3118Bibliographic citation
O. Almora, D. Miravet, G. J.Matt, G. Garcia-Belmonte, and C. J. Brabec, "Analytical model for light modulating impedance spectroscopy (LIMIS) in all-solid-state pn junction solar cells at open-circuit". Appl. Phys. Lett. 116, 013901 (2020); https://doi.org/10.1063/1.5139571Type
info:eu-repo/semantics/articlePublisher version
https://aip.scitation.org/doi/full/10.1063/1.5139571Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
Potentiostatic impedance spectroscopy (IS) is a well-known tool for characterization of materials and electronic devices. It can be complemented by numerical simulation strategies relying on drift-diffusion equations ... [+]
Potentiostatic impedance spectroscopy (IS) is a well-known tool for characterization of materials and electronic devices. It can be complemented by numerical simulation strategies relying on drift-diffusion equations without any equivalent circuit-based assumptions. This implies the time-dependent solutions of the transport equations under small perturbation of the external bias applied as a boundary condition at the electrodes. However, in the case of photosensitive devices, a small light perturbation modulates the generation rate along the absorber bulk. This work then approaches a set of analytical solutions for the signals of IS and intensity modulated photocurrent and photovoltage spectroscopies, intensity modulated photocurrent spectroscopy (IMPS) and intensity modulated photovoltage spectroscopy (IMVS), respectively, from one-sided p-n junction solar cells at the open-circuit. Subsequently, a photoimpedance signal named “light intensity modulated impedance spectroscopy” (LIMIS = IMVS/IMPS) is analytically simulated, and its difference with respect to IS suggests a correlation with the surface charge carrier recombination velocity. This is an illustrative result and the starting point for future more realistic numerical simulations.
We acknowledge the funding support from the Ministerio de-Ciencia, Innovación y Universidades of Spain under project (No. MAT2016-76892-C3-1-R). O.A. acknowledges the financial support from the VDI/VD Innovation + Technik GmbH (Project-title: PV-ZUM) and the SAOT funded by the German Research Foundation (DFG) in the framework of the German excellence initiative. [-]
Is part of
Applied Physics Letters, 2020, vol. 116, no 1Investigation project
Ministerio de Ciencia, Innovación y Universidades of Spain: MAT2016-76892-C3-1-R; VDI/VD Innovation thorn Technik GmbH; German Research Foundation (DFG)Rights
http://rightsstatements.org/vocab/CNE/1.0/
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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