Photoinduced Segregation Behavior in 2D Mixed Halide Perovskite: Effects of Light and Heat
Source abstract
Abstract
Photoinduced halide segregation (PHS) is a process of critical importance for the performance of perovskite solar cells with mixed halide absorber layers. However, PHS is still not well understood, especially in the case of layered mixed halide perovskites (MHPs), which are less commonly studied compared to their 3D counterparts. Here, we investigated temperature- and light-induced PHS in 2D MHPs with a phenylpropylammonium (PPA) spacer. We found that 2D PPA-based MHPs exhibited complex segregation behavior dependence on temperature and illumination intensity with the suppression of segregation observed at high temperature (attributed to the highly exothermic nature of the process) as well as moderate illumination intensities, illustrating the importance of additional processes present in this particular material, which exhibits distinctly different behavior compared to 2D MHPs with other aromatic cations.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Electronics and Photovoltaics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong
School of Physics, The University of Sydney, Sydney, New South Wales 2006 Australia
Ruđer Bošković Institute, Bijenička 54, Zagreb 10000, Croatia
Funding
Research Grants Council, University Grants Committee · Hrvatska Zaklada za Znanost · European Social Fund · National Natural Science Foundation of China
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