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Dresden 2020 – wissenschaftliches Programm

Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...

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AKjDPG: Arbeitskreis junge DPG

AKjDPG 5: PhD Focus Session: In-situ probes toward better understanding of hybrid halide perovskites I (joint session CPP/AKjDPG)

AKjDPG 5.2: Vortrag

Donnerstag, 19. März 2020, 17:45–18:00, ZEU 222

Understanding the crystallization of solution processed, alloyed perovskites by multimodal characterization — •Shambhavi Pratap1, 2, Nobumichi Tamura2, Zhenghao Yuan3, Alastair MacDowell2, Nicola Barchi4, Jonathan Slack2, Carolin Sutter-Fella4, and Peter Müller-Buschbaum11Lehrstuhl für Funktionelle Materialien, TU München, 85748 Garching, Germany — 2Advanced Light Source, Lawrence Berkeley National Laboratory, 94720 Berkeley, USA — 3Eberly College of Science, The Pennsylvania State University, State College,16801, USA — 4Chemical Sciences Division, Lawrence Berkeley National Laboratory, 94720 Berkeley, USA

The crystallization behavior of solution processed hybrid plumbohalide perovskites is an ideal study to understand the formation of chemical alloys. Precursors corresponding to two different perovskites are mixed to serve as the precursor for an alloyed species. During crystallization, distinct crystalline species are isolated and characterized, as the equilibrium between the complex precursor intermediates and perovskites is transformed to the crystalline product by annealing the structure. The evolution of chemical structures is temporally resolved and the transient structures are studied for their optoelectronic transformation by photoluminescence.

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