Revisiting Sub-Band Gap Emission Mechanism in 2D Halide Perovskites: The Role of Defect States
Igal Levine,
Dorothee Menzel,
Artem Musiienko
et al.
Abstract:Understanding the
sub-band gap luminescence in Ruddlesden–Popper
2D metal halide hybrid perovskites (2D HaPs) is essential for efficient
charge injection and collection in optoelectronic devices. Still,
its origins are still under debate with respect to the role of self-trapped
excitons or radiative recombination via defect states. In this study,
we characterized charge separation, recombination, and transport in
single crystals, exfoliated layers, and polycrystalline thin films
of butylammonium lead iodide (B… Show more
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