Journal Article

FZJ-2018-02521

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preferential Orientation of Crystals Induced by Incorporation of Organic Ligands in Mixed-Dimensional Hybrid Perovskite Films

Wang, R.FZJ* ; Tong, Y. ; Manzi, A. ; Wang, K. ; Fu, Z.FZJ* ; Kentzinger, E.FZJ* ; Feldmann, J. ; Urban, A. S. ; Müller-Buschbaum, P. (Corresponding author)MLZ* ; Frielinghaus, H. (Corresponding author)FZJ*

2018
Wiley-VCH Weinheim

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Please use a persistent id in citations: http://hdl.handle.net/2128/18221  doi:10.1002/adom.201701311

Abstract: Organic–inorganic perovskites demonstrate great potential for optical applications due to their intriguing optical and optoelectronic properties. Dedicated efforts have been carried out to understand the energy landscape and charge carrier mobilities for perovskite materials. In order to further boost these materials toward large‐scale applications, an alternative “bottom‐up” route for the understanding about correlation between the morphology of high‐quality planar films and their optical properties is essential. Here, mixed‐dimensional bromide‐based hybrid perovskite thin films are prepared from a simple one‐step solution processing route using mixtures of methylammonium bromide (MABr) and octylammonium bromide (OABr). Grazing incidence scattering data statistically reveal that the development of thin‐film morphology as well as crystal orientation depends on the orientation of the OABr crystallites. This study opens up further insight into the morphology of perovskite thin films. In combination, the occurrence of amplified spontaneous emission (ASE) in perovskite films with low ASE thresholds with values approaching 17.8 µJ cm−2 is demonstrated and appears to be closely correlated to the tailored morphology, highlighting its importance for realizing optical gain media.

Keyword(s): Energy (1st) ; Condensed Matter Physics (2nd) ; Soft Condensed Matter (2nd)

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS-FRM-II)
2. Neutronenstreuung (Neutronenstreuung ; JCNS-1)
3. Streumethoden (JCNS-2)

Research Program(s):

1. 6G15 - FRM II / MLZ (POF3-6G15) (POF3-6G15)
2. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)

Experiment(s):

1. KWS-3: Very small angle scattering diffractometer with focusing mirror (NL3auS)

Appears in the scientific report 2018

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Database coverage:
; ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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