Grain rotation and lattice deformation during perovskite spray coating and annealing probed in situ by GI-WAXS. Issue 29 (14th June 2016)

• Record Type: Journal Article
• Authors: Lilliu, S.; Griffin, J.; Barrows, A. T.; Alsari, M.; Curzadd, B.; Dane, T. G.; Bikondoa, O.; Macdonald, J. E.; Lidzey, D. G.
• Is Part Of: CrystEngComm. Volume 18:Issue 29(2016)
• Page Start: 5448
• Page End: 5455
• Publication Date: 2016-06-14
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c6ce00965d
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Synchrotron grazing incidence WAXS is used to track CH3 NH3 PbI3 precursor and perovskite crystallites rotation in situ during solution-deposition and thermal annealing. Abstract : We report for the first time on grain rotation in CH3 NH3 PbI3 perovskite films for ∼12% efficient planar solar cells and present a new method for investigating their texture evolution during thermal annealing. Our technique is based on in situ 2D grazing incidence wide-angle X-ray scattering (GI-WAXS) and employs a 10 keV wide-focussed X-ray beam to simultaneously probe a large number of grains. The ability to track the texture dynamics from a statistically relevant number of spots diffracting from single grains during thermal annealing and in grazing incidence geometry can have applications understanding the processing dynamics of a range of new materials.