Skip to main content

Visualizing the impact of chloride addition on the microscopic carrier dynamics of MAPbI3 thin films using femtosecond transient absorption microscopy

Publication ,  Journal Article
Yu, J; Li, Z; Kolodziej, C; Kuyuldar, S; Warren, WS; Burda, C; Fischer, MC
Published in: The Journal of Chemical Physics
December 21, 2019

The spatial heterogeneity of carrier dynamics in mixed halide perovskite CH3NH3PbI3−xClx thin films with a range of different chloride additions is mapped using femtosecond transient absorption microscopy (TAM). The comparison of TAM images of fibrous and granular polycrystalline CH3NH3PbI3−xClx films indicates that the impact of chloride addition on the local heterogeneity of carrier dynamics is highly dependent on the film preparation method and the resulting morphology. In addition to signals of pristine CH3NH3PbI3, CH3NH3PbI3−xClx films with a fibrous structure show long-lived excited state absorption (ESA) signals in localized, microscopic regions. The ESA signal exhibits transient absorption with a rise time of about 5 ps after the excitation pulse, indicating that these distinct micrograins have preferential carrier trapping properties. The chemical composition of these micrograins does not differ detectably from their surroundings. In contrast, in CH3NH3PbI3−xClx films with a granular structure, Cl addition does not seem to affect the charge carrier dynamics. These results provide insight into the localized effects of halide mixing and on the resulting photophysical properties of mixed halide perovskite materials on the micrometer length scale.

Duke Scholars

Altmetric Attention Stats
Dimensions Citation Stats

Published In

The Journal of Chemical Physics

DOI

EISSN

1089-7690

ISSN

0021-9606

Publication Date

December 21, 2019

Volume

151

Issue

23

Publisher

AIP Publishing

Related Subject Headings

  • Chemical Physics
  • 51 Physical sciences
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Yu, J., Li, Z., Kolodziej, C., Kuyuldar, S., Warren, W. S., Burda, C., & Fischer, M. C. (2019). Visualizing the impact of chloride addition on the microscopic carrier dynamics of MAPbI3 thin films using femtosecond transient absorption microscopy. The Journal of Chemical Physics, 151(23). https://doi.org/10.1063/1.5127875
Yu, Jin, Zhongguo Li, Charles Kolodziej, Seher Kuyuldar, Warren S. Warren, Clemens Burda, and Martin C. Fischer. “Visualizing the impact of chloride addition on the microscopic carrier dynamics of MAPbI3 thin films using femtosecond transient absorption microscopy.” The Journal of Chemical Physics 151, no. 23 (December 21, 2019). https://doi.org/10.1063/1.5127875.
Yu J, Li Z, Kolodziej C, Kuyuldar S, Warren WS, Burda C, et al. Visualizing the impact of chloride addition on the microscopic carrier dynamics of MAPbI3 thin films using femtosecond transient absorption microscopy. The Journal of Chemical Physics. 2019 Dec 21;151(23).
Yu, Jin, et al. “Visualizing the impact of chloride addition on the microscopic carrier dynamics of MAPbI3 thin films using femtosecond transient absorption microscopy.” The Journal of Chemical Physics, vol. 151, no. 23, AIP Publishing, Dec. 2019. Crossref, doi:10.1063/1.5127875.
Yu J, Li Z, Kolodziej C, Kuyuldar S, Warren WS, Burda C, Fischer MC. Visualizing the impact of chloride addition on the microscopic carrier dynamics of MAPbI3 thin films using femtosecond transient absorption microscopy. The Journal of Chemical Physics. AIP Publishing; 2019 Dec 21;151(23).

Published In

The Journal of Chemical Physics

DOI

EISSN

1089-7690

ISSN

0021-9606

Publication Date

December 21, 2019

Volume

151

Issue

23

Publisher

AIP Publishing

Related Subject Headings

  • Chemical Physics
  • 51 Physical sciences
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences