Ontology highlight
ABSTRACT:
SUBMITTER: Price MB
PROVIDER: S-EPMC4598728 | biostudies-literature | 2015 Sep
REPOSITORIES: biostudies-literature
Price Michael B MB Butkus Justinas J Jellicoe Tom C TC Sadhanala Aditya A Briane Anouk A Halpert Jonathan E JE Broch Katharina K Hodgkiss Justin M JM Friend Richard H RH Deschler Felix F
Nature communications 20150925
Metal-halide perovskites are at the frontier of optoelectronic research due to solution processability and excellent semiconductor properties. Here we use transient absorption spectroscopy to study hot-carrier distributions in CH3NH3PbI3 and quantify key semiconductor parameters. Above bandgap, non-resonant excitation creates quasi-thermalized carrier distributions within 100 fs. During carrier cooling, a sub-bandgap transient absorption signal arises at ∼ 1.6 eV, which is explained by the inter ...[more]