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Effect of thermal annealing on the optical and morphological properties of (AETH)PbX4 (X = Br, I) perovskite films prepared using single source thermal ablation

Publication ,  Journal Article
Chondroudis, K; Mitzi, DB; Brock, P
Published in: Chemistry of Materials
January 1, 2000

Films of the neworganic-inorganic hybrid materials AETHPbX4 (AETH = 1,6-bis[5'-(2-aminoethyl)-2'-thienyl]hexane; X = Br, I) were fabricated using single source thermal ablation (SSTA). The as-deposited films were optically smooth and nominally amorphous. The progressive effects of annealing on the structural, optical, and morphological properties of the films were monitored using powder X-ray diffraction, optical spectroscopy, and atomic force microscopy (AFM). Short duration postdeposition annealing at mild temperatures resulted in well-crystallized films of the AETHPbX4 hybrid perovskites. It was found that up to some critical annealing temperature (~ 120 °C), the emission wavelength and the exciton absorption of the compounds shifted to lower energies as the annealing temperature increased. As confirmed with AFM measurements, this shift in optical properties suggests a gradual increase of the grain size with annealing temperature. When the samples were annealed at higher temperatures (> 180 °C) their surface morphology changed dramatically, yielding much rougher surfaces due to substantial grain growth and partial decomposition of the framework (with subsequent loss of the organic component). This work demonstrates that the SSTA method can be combined with postdeposition annealing to fabricate good quality, crystalline organic-inorganic perovskite thin films containing complex organic cations.

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Published In

Chemistry of Materials

DOI

ISSN

0897-4756

Publication Date

January 1, 2000

Volume

12

Issue

1

Start / End Page

169 / 175

Related Subject Headings

  • Materials
  • 09 Engineering
  • 03 Chemical Sciences
 

Citation

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Chondroudis, K., Mitzi, D. B., & Brock, P. (2000). Effect of thermal annealing on the optical and morphological properties of (AETH)PbX4 (X = Br, I) perovskite films prepared using single source thermal ablation. Chemistry of Materials, 12(1), 169–175. https://doi.org/10.1021/cm990516l
Chondroudis, K., D. B. Mitzi, and P. Brock. “Effect of thermal annealing on the optical and morphological properties of (AETH)PbX4 (X = Br, I) perovskite films prepared using single source thermal ablation.” Chemistry of Materials 12, no. 1 (January 1, 2000): 169–75. https://doi.org/10.1021/cm990516l.
Chondroudis, K., et al. “Effect of thermal annealing on the optical and morphological properties of (AETH)PbX4 (X = Br, I) perovskite films prepared using single source thermal ablation.” Chemistry of Materials, vol. 12, no. 1, Jan. 2000, pp. 169–75. Scopus, doi:10.1021/cm990516l.
Journal cover image

Published In

Chemistry of Materials

DOI

ISSN

0897-4756

Publication Date

January 1, 2000

Volume

12

Issue

1

Start / End Page

169 / 175

Related Subject Headings

  • Materials
  • 09 Engineering
  • 03 Chemical Sciences