The electronic structure of methylammonium lead bromide (CH3NH3PbBr3) single crystals has been investigated through a combination of resonant photoemission and theoretical modeling. There are Pb spectral contributions throughout the valence band. Importantly, the electronic structure at the top of the valence band is found to be dominated by the hybridized Pb-Br bands, not methylammonium bromide. The results line up with the partial density of states obtained from density functional theory and confirm that much of the valence band has some Pb spectral weight.
|Original language||English (US)|
|Journal||Applied Physics Letters|
|State||Published - Jul 9 2018|
Bibliographical noteFunding Information:
The single crystals used in this study were synthesized in the Functional Nanomaterials Lab (FuNL), KAUST, headed by Professor Osman M. Bakr, whose helpful comments on the results and conclusions of this study are acknowledged. The support of King Abdullah University of Science and Technology (KAUST) and Saudi Arabia Basic Industries Corporation (SABIC) is acknowledged. The work at the University of Nebraska was supported by the National Science Foundation through the Nebraska MRSEC (Grant No. DMR-1420645), the Nebraska Center for Energy Science and Research.
© 2018 Published by AIP Publishing.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)