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Sökning: id:"swepub:oai:DiVA.org:mau-4938" > Neutron reflectomet...

Neutron reflectometry and hard X-ray photoelectron spectroscopy study of the vertical segregation of PCBM in organic solar cells

Urbina, Antonio (författare)
Advanced Materials for Production and Storing of Energy, Technical University of Cartagena, Plaza del Hospital 1, Cartagena, 30202, Spain
Abad, Jose (författare)
Advanced Materials for Production and Storing of Energy, Technical University of Cartagena, Plaza del Hospital 1, Cartagena, 30202, Spain
Fernandez Romero, Antonio J. (författare)
Advanced Materials for Production and Storing of Energy, Technical University of Cartagena, Plaza del Hospital 1, Cartagena, 30202, Spain
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Lacasa, Jesus S. (författare)
Departament of Physics, Instituto Universitario de Investigación en Óptica y Nanofísica (IUIOyN), University of Murcia, Campus de Espinardo, Murcia, 30100, Spain
Colchero, Jaime (författare)
Departament of Physics, Instituto Universitario de Investigación en Óptica y Nanofísica (IUIOyN), University of Murcia, Campus de Espinardo, Murcia, 30100, Spain
Gonzalez-Martinez, Juan F (författare)
Malmö universitet,Institutionen för biomedicinsk vetenskap (BMV),Biofilms Research Center for Biointerfaces
Rubio-Zuazo, Juan (författare)
SpLine CRG BM25 Beamline, European Synchrotron Radiation Facility, 71 Avenue des Martys, Grenoble, 38000, France; Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (ICMM-CSIC), Madrid, 28049, Spain
Castro, German R. (författare)
SpLine CRG BM25 Beamline, European Synchrotron Radiation Facility, 71 Avenue des Martys, Grenoble, 38000, France; Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (ICMM-CSIC), Madrid, 28049, Spain
Gutfreund, Philipp (författare)
Institut Laue-Langevin, Grenoble Cedex, 38042, France
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 (creator_code:org_t)
Elsevier, 2019
2019
Engelska.
Ingår i: Solar Energy Materials and Solar Cells. - : Elsevier. - 0927-0248 .- 1879-3398. ; 191, s. 62-70
Relaterad länk:
https://digital.csic...
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https://urn.kb.se/re...
https://doi.org/10.1...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • The composition of the active layer of a benchmark functional glass/ITO/[P3HT:PCBM][1.1:1]/Al organic solar cell has been studied by neutron reflectometry (NR) and hard X-ray photoelectron spectroscopy (HAXPES). Thermal annealing was performed in several steps and NR and HAXPES were recorded for every temperature. By fitting the NR results to a model composed of several layers, the scattering length density (SLD) distribution through the sample was obtained, and from this SLD profile, the evolution of the composition of the active layer as a function of temperature was established. For the outer layers, HAXPES results confirm the composition evolution. The results show that PCBM tends to segregate reducing the initial concentration of PCBM in the central part of the active layer and increasing its concentration towards both interfaces. The effect of the Al electrode as studied by HAXPES on the nearest zone of the active layer (up to 50 nm) is to stabilize the P3HT depletion in this area, an effect which is not affected by thermal annealing.

Nyckelord

Organic solar cells
Neutron reflectometry
Hard X-ray photoelectron spectroscopy
Conjugated polymers
P3HT:PCBM

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