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Imaging Spatial Variations of Optical Bandgaps in Perovskite Solar Cells

Chen, Boyi; Peng, Jun; Shen, Heping; Duong, The; Walter, Daniel; Johnston, Steve; Al‐Jassim, Mowafak M.; Weber, Klaus; White, Thomas; Catchpole, Kylie; Macdonald, Daniel; Nguyen, Hieu


A fast, nondestructive, camera-based method to capture optical bandgap images of perovskite solar cells (PSCs) with micrometer-scale spatial resolution is developed. This imaging technique utilizes well-defined and relatively symmetrical band-to-band luminescence spectra emitted from perovskite materials, whose spectral peak locations coincide with absorption thresholds and thus represent their optical bandgaps. The technique is employed to capture relative variations in optical bandgaps across...[Show more]

CollectionsANU Research Publications
Date published: 2019-02-14
Type: Journal article
Source: Advanced Energy Materials
DOI: 10.1002/aenm.201802790
Access Rights: Open Access


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