RT Journal Article
T1 Energy alignment and recombination in perovskite solar cells: weighted influence on the open circuit voltage
A1 Gelmetti, Ilario
A1 Montcada, Núria
A1 Pérez-Rodríguez, Ana
A1 Barrena, Esther
A1 Ocal, Carmen
A1 García Benito, Inés
A1 Molina Ontoria, Agustín
A1 Martín León, Nazario
A1 Vidal-Ferran, Anton
A1 Palomares, Emilio
AB In this work, we assess the possible reasons for the differences observed in open circuit voltage (VOC) in mixed cation perovskite solar cells when comparing four different hole transport materials (HTMs), namely TAE-1, TAE-3, TAE-4 and spiro-OMeTAD. All these HTMs present close chemical and physical properties, however, once they are finally deposited onto the perovskite layer, the HTMs provide different performance characteristics. Additional to the evaluation of the HTM influence on recombination, we find that, upon deposition of the organic HTM on top of the perovskite, there is an important change in the energy level position, and the impact on the device VOC is discussed. We consider that this experimental observation could be general for other organic HTMs and would justify the difficulties in finding molecules and materials that could improve the efficiency of perovskite solar cells overcoming the solar-to-energy conversion efficiency of solar cells made using spiro-OMeTAD as a hole selective contact.
PB Royal Society of Chemistry
SN 1754-5692
YR 2019
FD 2019
LK https://hdl.handle.net/20.500.14352/108431
UL https://hdl.handle.net/20.500.14352/108431
LA eng
NO Gelmetti, Ilario, et al. «Energy Alignment and Recombination in Perovskite Solar Cells: Weighted Influence on the Open Circuit Voltage». Energy & Environmental Science, vol. 12, n.o 4, 2019, pp. 1309-16. https://doi.org/10.1039/C9EE00528E.
NO Ministerio de Economía y Competitividad (España)
NO European Commission
NO Comunidad de Madrid
NO Generalitat de Catalunya
DS Docta Complutense
RD 7 abr 2025