Direct observation of mode-specific phonon-band gap coupling in methylammonium lead halide perovskites
Methylammonium lead iodide perovskite, a promising material for efficient photovoltaics, shows a unique temperature dependence of its optical properties. Kim et al. quantify the coupling between the optical gap and a lattice phonon at 1 THz, which favorably contributes to the thermal variation of th...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2017-09-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-017-00807-x |