ORCID Profile
0000-0002-5537-6545
Current Organisation
Utrecht University
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Publisher: American Chemical Society (ACS)
Date: 09-08-2019
Publisher: Springer Science and Business Media LLC
Date: 30-04-2020
Publisher: American Chemical Society (ACS)
Date: 02-08-2017
Publisher: Wiley
Date: 19-10-2016
Abstract: The extent to which the soft structural properties of metal halide perovskites affect their optoelectronic properties is unclear. X-ray diffraction and micro-photoluminescence measurements are used to show that there is a coexistence of both tetragonal and orthorhombic phases through the low-temperature phase transition, and that cycling through this transition can lead to structural changes and enhanced optoelectronic properties.
Publisher: American Chemical Society (ACS)
Date: 24-07-2015
DOI: 10.1021/ACS.JPCLETT.5B01361
Abstract: Efficient solar cells have been obtained using thin films of solution-processed organic-inorganic perovskites. However, there remains limited knowledge about the relationship between preparation route and optoelectronic properties. We use complementary time-resolved microwave conductivity (TRMC) and photoluminescence (PL) measurements to investigate the charge carrier dynamics in thin planar films of CH3NH3PbI(3-x)Cl(x), CH3NH3PbI3, and their meso-structured analogues. High mobilities close to 30 cm(2)/(V s) and microsecond-long lifetimes are found in thin films of CH3NH3PbI(3-x)Cl(x), compared to lifetimes of only a few hundred nanoseconds in CH3NH3PbI3 and meso-structured perovskites. We describe our TRMC and PL experiments with a global kinetic model, using one set of kinetic parameters characteristic for each s le. We find that the trap density is less than 5 × 10(14) cm(-3) in CH3NH3PbI(3-x)Cl(x), 6 × 10(16) cm(-3) in the CH3NH3PbI3 thin film and ca. 10(15) cm(-3) in both meso-structured perovskites. Furthermore, our results imply that band-to-band recombination is enhanced by the presence of dark carriers resulting from unintentional doping of the perovskites. Finally, our general approach to determine concentrations of trap states and dark carriers is also highly relevant to other semiconductor materials.
Publisher: AIP Publishing
Date: 03-01-2022
DOI: 10.1063/5.0081049
Publisher: Springer Science and Business Media LLC
Date: 03-10-2016
DOI: 10.1038/NMAT4765
Abstract: Metal halide perovskites such as methylammonium lead iodide (CH
No related grants have been discovered for Eline Hutter.