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dc.contributor.authorWenger, Sophie-
dc.contributor.authorSchmid, Matthias-
dc.contributor.authorRothenberger, Guido-
dc.contributor.authorGrätzel, Michael-
dc.contributor.authorSchumacher, Jürgen-
dc.date.accessioned2018-10-11T13:24:49Z-
dc.date.available2018-10-11T13:24:49Z-
dc.date.issued2010-04-
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/11670-
dc.description.abstractThe mathematical description of charge transport and recombination in dye-sensitized solar cells requires equations specific to nanostructured electrochemical devices. Charge transport in the mesoporous TiO2 film is generally assumed to be purely diffusive (no drift component) due to the high ionic strength of the electrolyte permeating the pores. Experiments have repeatedly shown electron lifetimes in the ms range, which depend on illumination intensity, suggesting a trapping-limited transport. The electron diffusion length is in the order of the TiO2 film thickness (~10 μm) which induces a photovoltage of about 0.8 V under full sun illumination. We have previously developed a validated optical model based on coherent and incoherent optics to accurately calculate the charge generation function in a complete device. The optical model is coupled to a linear electrical transport model via the charge generation function as source term. From the analytical solution, one can calculate the steady-state behavior, e.g. I-V curves. This paper presents our next steps in developing a spatially resolved time-dependent model to calculate the response of the cell to small perturbations (e.g. illumination or applied potential). Here, the trap distribution and the electron recombination route via the TiO2 conduction band and possibly via surface states come into play. From the numerical solution of this extended model one can extract electron lifetimes and electron diffusion coefficients from time-dependent measurements and further simulate the parameters for any defined experimental condition, e.g. at the maximum power point.de_CH
dc.language.isoende_CH
dc.publisherMaterial Research Society (MRS)de_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectDye sensitized solar cellde_CH
dc.subjectCharacterizationde_CH
dc.subjectModellingde_CH
dc.subject.ddc540: Chemiede_CH
dc.subject.ddc621.3: Elektro-, Kommunikations-, Steuerungs- und Regelungstechnikde_CH
dc.titleUnderstanding charge transport and recombination in dye-sensitized solar cells using an experimentally validated coupled optical and electrical modelde_CH
dc.typeKonferenz: Sonstigesde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitute of Computational Physics (ICP)de_CH
zhaw.conference.detailsMRS Spring Meeting, San Francisco, USA, 5-9 April 2010de_CH
zhaw.funding.euNode_CH
zhaw.originated.zhawYesde_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.publication.reviewNot specifiedde_CH
Appears in collections:Publikationen School of Engineering

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Wenger, S., Schmid, M., Rothenberger, G., Grätzel, M., & Schumacher, J. (2010, April). Understanding charge transport and recombination in dye-sensitized solar cells using an experimentally validated coupled optical and electrical model. MRS Spring Meeting, San Francisco, USA, 5-9 April 2010.
Wenger, S. et al. (2010) ‘Understanding charge transport and recombination in dye-sensitized solar cells using an experimentally validated coupled optical and electrical model’, in MRS Spring Meeting, San Francisco, USA, 5-9 April 2010. Material Research Society (MRS).
S. Wenger, M. Schmid, G. Rothenberger, M. Grätzel, and J. Schumacher, “Understanding charge transport and recombination in dye-sensitized solar cells using an experimentally validated coupled optical and electrical model,” in MRS Spring Meeting, San Francisco, USA, 5-9 April 2010, Apr. 2010.
WENGER, Sophie, Matthias SCHMID, Guido ROTHENBERGER, Michael GRÄTZEL und Jürgen SCHUMACHER, 2010. Understanding charge transport and recombination in dye-sensitized solar cells using an experimentally validated coupled optical and electrical model. In: MRS Spring Meeting, San Francisco, USA, 5-9 April 2010. Conference presentation. Material Research Society (MRS). April 2010
Wenger, Sophie, Matthias Schmid, Guido Rothenberger, Michael Grätzel, and Jürgen Schumacher. 2010. “Understanding Charge Transport and Recombination in Dye-Sensitized Solar Cells Using an Experimentally Validated Coupled Optical and Electrical Model.” Conference presentation. In MRS Spring Meeting, San Francisco, USA, 5-9 April 2010. Material Research Society (MRS).
Wenger, Sophie, et al. “Understanding Charge Transport and Recombination in Dye-Sensitized Solar Cells Using an Experimentally Validated Coupled Optical and Electrical Model.” MRS Spring Meeting, San Francisco, USA, 5-9 April 2010, Material Research Society (MRS), 2010.


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