25 research outputs found
Persistent photovoltage in methylammonium lead iodide perovskite solar cells
Open circuit voltage decay measurements are performed on methylammonium lead
iodide (CH3NH3PbI3) perovskite solar cells to investigate the charge carrier
recombination dynamics. The measurements are compared to the two reference
polymer-fullerene bulk heterojunction solar cells based on P3HT:PC60BM and
PTB7:PC70BM blends. In the perovskite devices, two very different time domains
of the voltage decay are found, with a first drop on a short time scale that is
similar to the organic solar cells. However, two major differences are also
observed. 65-70% of the maximum photovoltage persists on much longer
timescales, and the recombination dynamics are dependent on the illumination
intensity.Comment: 5 pages, 3 figure
Financial doping and financial fair play in European Club football competitions
Addresses the emerging area of manipulation in professional sports by bringing a collection of original contributions together in one volume for the first time
Provides an interdisciplinary approach, combining economic, business administrative and legal issues, that enables a complete overview for any scholar interested in the global economics of, and manipulation of sport, in general
Presents contributions from world class scholars that are well known in their area
Quasi-bounded mappings and complementarity problems depending of parameters
Quasi-bounded mappings, Complementarity problems depending of parameters,