18-22 July 2016
Hotel Wyndham Grand Axelmannstein, Bad Reichenhall, Germany
Europe/Berlin timezone

Low dimensional lead bromide perovskite in light emitting application – investigation on structure evolution via neutron scattering

19 Jul 2016, 16:50
2h 40m
Hotel Wyndham Grand Axelmannstein, Bad Reichenhall, Germany

Hotel Wyndham Grand Axelmannstein, Bad Reichenhall, Germany

Salzburger Str. 2-6 83453 Bad Reichenhall
Board: 29
Poster Solar Energy Poster Session

Speaker

Mr Rui Wang (Jülich Center for Neutron Science, outstation at FRM II, Lichtenbergstr. 1, 85747 Garching)

Description

Two dimensional functional materials have created intensive research interest for high efficiency solar cells. Recently low dimensional pervoskite nanocrystals, such as 2D perovskite nanoplatlates have been reported to possess reduced fluorescence decay times, an increased exciton binding energy and low conductivity in certain crystallographic directions. Consequently, these lower dimensional perovskites can be utilized for light emitting applications. In the present work, 2D nanosheet perovskites are formed by using octylammonium bromide as capping ligands. GISANS combined with neutron reflectivity (NR) are applied to investigate the structure buried inside the thin films. GISANS had proven to be a powerful technique for thin film morphology investigations. NR guarantees that information about nanometer sized layers can be accessed. We present the determined results in terms of morphology formation evolution, stacked layered characteristic and optical properties.

Primary author

Mr Rui Wang (Jülich Center for Neutron Science, outstation at FRM II, Lichtenbergstr. 1, 85747 Garching)

Co-authors

Dr Alexandros Koutsioumpas (JCNS) Dr Henrich Frielinghaus (JCNS) Prof. Peter Müller-Buschbaum (TU München, Physik-Department, LS Funktionelle Materialien) Stefan Mattauch (FZ-Juelich) Mr Tong Yu (Ludwig-Maximilians-Universität (LMU), Department of Physics and Center for Nanoscience (CeNS), Photonics and Optoelectronics Group, Amalienstr. 54, 80799 Munich) Vitaliy Pipich

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