Ontology highlight
ABSTRACT:
SUBMITTER: Palmieri T
PROVIDER: S-EPMC7016123 | biostudies-literature | 2020 Feb
REPOSITORIES: biostudies-literature
Nature communications 20200212 1
In a seminal paper, Mahan predicted that excitonic bound states can still exist in a semiconductor at electron-hole densities above the insulator-to-metal Mott transition. However, no clear evidence for this exotic quasiparticle, dubbed Mahan exciton, exists to date at room temperature. In this work, we combine ultrafast broadband optical spectroscopy and advanced many-body calculations to reveal that organic-inorganic lead-bromide perovskites host Mahan excitons at room temperature. Persistence ...[more]