Listar FCA_Articles por autoría "1975881b-b571-46ba-b477-77cc4491fe15"
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Charge separation at disordered semiconductor heterojunctions from random walk numerical simulations
Mandujano-Ramírez, Humberto J.; González Vázquez, J. P.; Oskam, Gerko; Dittrich, Thomas; Garcia-Belmonte, Germà; Mora-Sero, Ivan; Bisquert, Juan; Anta, Juan A. Royal Society of Chemistry (2014)Many recent advances in novel solar cell technologies are based on charge separation in disordered semiconductor heterojunctions. In this work we use the Random Walk Numerical Simulation (RWNS) method to model the dynamics ... -
High performing PbS Quantum Dot Sensitized Solar Cells exceeding 4% efficiency: The role of metal precursor in the electron injection and charge separation
González Pedro, Victoria; Sima, Cornelia; Marzari, Gabriela; Boix, Pablo P; Gimenez, Sixto; Qing, Shen; Dittrich, Thomas; Mora-Sero, Ivan Royal Society of Chemistry (2013)Here we report the preparation of high performance Quantum Dot Sensitized Solar Cells (QDSCs) based on PbS–CdS co-sensitized nanoporous TiO2 electrodes. QDs were directly grown on the TiO2 mesostructure by the Successive ... -
Interpretation of diffusion coefficients in nanostructured materials from random walk numerical simulation
Anta, Juan A.; Dittrich, Thomas; Bisquert, Juan; Mora-Sero, Ivan Royal Society of Chemistry (2008)We make use of the numerical simulation random walk (RWNS) method to compute the ‘‘jump’’ diffusion coefficient of electrons in nanostructured materials via mean-square displacement. First, a summary of analytical results ... -
Large improvement of electron extraction from CdSe quantum dots into a TiO<sub>2</sub> thin layer by N3 dye coabsorption
Mora-Sero, Ivan; Dittrich, Thomas; Susha, A. S.; Rogach, A. L.; Bisquert, Juan Elsevier (2008)Extraction of electrons and holes photogenerated in CdSe quantum dots (QD) of 2.3 nm diameter, is monitored by Surface Photovoltage Spectroscopy. The extraction of electrons into a thin TiO<sub>2</sub> layer increases ... -
Porosity dependence of electron percolation in nanoporus TiO2 layers
Bisquert, Juan; Ofir, Ashi; Dor, Snir; Grinis, Larisa; Zaban, Arie; Dittrich, Thomas American Institute of Physics (2008)The electron diffusion coefficient at varying porosity has been determined in a series of nanostructured TiO2 films of different initial thicknesses. The porosity was changed by applying different pressures prior to ...