03540nam 22007335 450 991048416430332120251202165448.03-030-70940-X10.1007/978-3-030-70940-2(CKB)4100000011930316(DE-He213)978-3-030-70940-2(MiAaPQ)EBC6627522(Au-PeEL)EBL6627522(OCoLC)1252424823(PPN)255883056(EXLCZ)99410000001193031620210518d2021 u| 0engurnn|008mamaatxtrdacontentcrdamediacrrdacarrierExciton Dynamics in Lead Halide Perovskite Nanocrystals Recombination, Dephasing and Diffusion /by Bernhard Johann Bohn1st ed. 2021.Cham :Springer International Publishing :Imprint: Springer,2021.1 online resource (XXII, 152 p. 62 illus., 58 illus. in color.) Springer Theses, Recognizing Outstanding Ph.D. Research,2190-50613-030-70939-6 Introduction -- Fundamentals -- Materials and Methods -- Recombination -- Dephasing -- Diffusion.Less than a decade ago, lead halide perovskite semiconductors caused a sensation: Solar cells exhibiting astonishingly high levels of efficiency. Recently, it became possible to synthesize nanocrystals of this material as well. Interestingly; simply by controlling the size and shape of these crystals, new aspects of this material literally came to light. These nanocrystals have proven to be interesting candidates for light emission. In this thesis, the recombination, dephasing and diffusion of excitons in perovskite nanocrystals is investigated using time-resolved spectroscopy. All these dynamic processes have a direct impact on the light-emitting device performance from a technology point of view. However, most importantly, the insights gained from the measurements allowed the author to modify the nanocrystals such that they emitted with an unprecedented quantum yield in the blue spectral range, resulting in the successful implementation of this material as the activelayer in an LED. This represents a technological breakthrough, because efficient perovskite light emitters in this wavelength range did not exist before.Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5061NanosciencePhotovoltaic power generationOptical spectroscopyNanoparticlesElectronicsMaterialsOptical materialsNanophysicsPhotovoltaicsOptical SpectroscopyNanoparticlesElectronic MaterialsOptical MaterialsNanoscience.Photovoltaic power generation.Optical spectroscopy.Nanoparticles.ElectronicsMaterials.Optical materials.Nanophysics.Photovoltaics.Optical Spectroscopy.Nanoparticles.Electronic Materials.Optical Materials.621.38152Bohn Bernhard Johann946975MiAaPQMiAaPQMiAaPQBOOK9910484164303321Exciton Dynamics in Lead Halide Perovskite Nanocrystals2139505UNINA