Crystal structure and properties of dye-containing organic- inorganic perovskites

Published

Conference Paper

The oligothiophene derivative, 5,5‴-bis(aminoethyl) 2,2′:5′,2″:5″, 2‴-quaterthiophene (AEQT), has been incorporated within a lead(II) halide-based perovskite framework. Single crystal X-ray analysis has been used to verify the perovskite framework and examine the ordering of the dye cations within the structure. Thin films of (AEQT)PbX4 (X = Cl, Br, and I) have also been thermally ablated onto quartz substrates and the optical properties of the films have been examined. Strong photoluminescence from the quaterthiophene moiety is observed for X = Cl, with an emission peak at approximately λmax = 532 nm. Similar photoluminescence is observed for the X = Br and I materials, but with progressively less intensity, as the band gap of the inorganic framework gets smaller relative to the LUMO-HOMO gap of the dye molecule. (AEQT)PbCl4 films have also been incorporated as emission layers in light emitting devices (LED) and intense room temperature electroluminescence has been observed.

Full Text

Duke Authors

Cited Authors

  • Mitzi, DB; Chondroudis, K

Published Date

  • January 1, 2001

Published In

Volume / Issue

  • 356 /

Start / End Page

  • 549 - 558

International Standard Serial Number (ISSN)

  • 1058-725X

Digital Object Identifier (DOI)

  • 10.1080/10587250108023733

Citation Source

  • Scopus