Despite the advances in solar cells based on lead halide perovskites, the nature of photogenerated charges and trap states within these materials remains unclear. A model describing recombination in CH3NH3PbI3−xClx has been developed that accounts for phonon-assisted free-exciton and free-carrier trapping. We utilize optical spectroscopies and observe significant co-existence of the tetragonal and orthorhombic structural phases at low temperatures. From these measurements, we evaluate the longitudinal−optical phonon energy, exciton binding energy, and temperature-dependent electronic bandgap. We use these parameters to model the temperature- and fluence-dependent time-resolved photoluminescence decays, enabling us to demonstrate how shallow...
Solar cells based on organometal halide perovskites have seen rapidly increasing efficiencies, now e...
Hybrid organic-inorganic metal halide perovskites have recently emerged as exciting new light-harves...
In this thesis, we investigate the nature of charge carrier generation, relaxation and recombination...
While lead halide perovskites have rapidly emerged as lucrative material candidates for optoelectron...
The optoelectronic properties of the mixed hybrid lead halide perovskite CH3NH3PbI3-xClx have been s...
Trap‐related charge‐carrier recombination fundamentally limits the performance of perovskite solar c...
Solar cells based on organometal halide perovskites have seen rapidly increasing efficiencies, now e...
The development of high efficiency perovskite solar cells has sparked a multitude of measurements on...
Lead-halide based perovskite semiconductors have recently attracted significant attention owing to t...
It is crucially required to understand charge traps in CH₃NH₃PbI₃ perovskites, which severely affect...
The small exciton binding energy of perovskite suggests that the long-lived photoluminescence and sl...
International audienceImprovement of the performance of perovskite solar cells and optoelectronic de...
International audienceRecently, Ruddlesden–Popper 2D perovskite (RPP) solar cells and light-emitting...
Metal halide perovskites are a class of materials which have recently achieved remarkable success i...
Elucidating the decay mechanisms of photoexcited charge carriers is key to improving the efficiency ...
Solar cells based on organometal halide perovskites have seen rapidly increasing efficiencies, now e...
Hybrid organic-inorganic metal halide perovskites have recently emerged as exciting new light-harves...
In this thesis, we investigate the nature of charge carrier generation, relaxation and recombination...
While lead halide perovskites have rapidly emerged as lucrative material candidates for optoelectron...
The optoelectronic properties of the mixed hybrid lead halide perovskite CH3NH3PbI3-xClx have been s...
Trap‐related charge‐carrier recombination fundamentally limits the performance of perovskite solar c...
Solar cells based on organometal halide perovskites have seen rapidly increasing efficiencies, now e...
The development of high efficiency perovskite solar cells has sparked a multitude of measurements on...
Lead-halide based perovskite semiconductors have recently attracted significant attention owing to t...
It is crucially required to understand charge traps in CH₃NH₃PbI₃ perovskites, which severely affect...
The small exciton binding energy of perovskite suggests that the long-lived photoluminescence and sl...
International audienceImprovement of the performance of perovskite solar cells and optoelectronic de...
International audienceRecently, Ruddlesden–Popper 2D perovskite (RPP) solar cells and light-emitting...
Metal halide perovskites are a class of materials which have recently achieved remarkable success i...
Elucidating the decay mechanisms of photoexcited charge carriers is key to improving the efficiency ...
Solar cells based on organometal halide perovskites have seen rapidly increasing efficiencies, now e...
Hybrid organic-inorganic metal halide perovskites have recently emerged as exciting new light-harves...
In this thesis, we investigate the nature of charge carrier generation, relaxation and recombination...