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Homogeneous Emission Line Broadening in the Organo Lead Halide Perovskite CH3NH3PbI3–xClx
Open accessAbstract
The organic-inorganic hybrid perovskites methylammonium lead iodide (CH3NH3PbI3) and the partially chlorine-substituted mixed halide CH3NH3PbI3-xClx emit strong and broad photoluminescence (PL) around their band gap energy of ∼1.6 eV. However, the nature of the radiative decay channels behind the observed emission and, in particular, the spectral broadening mechanisms are still unclear. Here we investigate these processes for high-quality vapor-deposited films of CH3NH3PbI3-xClx using time- and excitation-energy dependent photoluminescence spectroscopy. We show that the PL spectrum is homogenously broadened with a line width of 103 meV most likely as a consequence of phonon coupling effects. Further analysis reveals that defects or trap states play a minor role in radiative decay channels. In terms of possible lasing applications, the emission spectrum of the perovskite is sufficiently broad to have potential for amplification of light pulses below 100 fs pulse duration.
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Stranks, S. D., Eperon, G. E., Grancini, G., Menelaou, C., Alcocer, M. J. P., Leijtens, T., Herz, L. M., Petrozza, A., & Snaith, H. J. (2013) · Science · doi:10.1126/science.1243982 · Cited by 10,413
Self-citationKim, H.-S., Lee, C.-R., Im, J.-H., Lee, K.-B., Moehl, T., Marchioro, A., Moon, S.-J., Humphry-Baker, R., Yum, J.-H., Moser, J. E., et al. (2012) · Scientific Reports · doi:10.1038/srep00591 · Cited by 8,092
Cited by
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Noel, N. K., Stranks, S. D., Abate, A., Wehrenfennig, C., Guarnera, S., Haghighirad, A.-A., Sadhanala, A., Eperon, G. E., Pathak, S. K., Johnston, M. B., et al. (2014) · Energy Environ. Sci. · doi:10.1039/c4ee01076k · Cited by 2,746
Self-citationElectron–phonon coupling in hybrid lead halide perovskites
Wright, A. D., Verdi, C., Milot, R. L., Eperon, G. E., Pérez-Osorio, M. A., Snaith, H. J., Giustino, F., Johnston, M. B., & Herz, L. M. (2016) · Nature Communications · doi:10.1038/ncomms11755 · Cited by 1,374
Self-citationTrap States in Lead Iodide Perovskites
Wu, X., Trinh, M. T., Niesner, D., Zhu, H., Norman, Z., Owen, J. S., Yaffe, O., Kudisch, B. J., & Zhu, X.-Y. (2015) · Journal of the American Chemical Society · doi:10.1021/ja512833n · Cited by 988
Charge-Carrier Dynamics in Organic-Inorganic Metal Halide Perovskites
Herz, L. M. (2016) · Annual Review of Physical Chemistry · doi:10.1146/annurev-physchem-040215-112222 · Cited by 819
Self-citationPhotocarrier Recombination Dynamics in Perovskite CH3NH3PbI3 for Solar Cell Applications
Yamada, Y., Nakamura, T., Endo, M., Wakamiya, A., & Kanemitsu, Y. (2014) · Journal of the American Chemical Society · doi:10.1021/ja506624n · Cited by 787
Metadata
- Authors
- Wehrenfennig, C., Liu, M., Snaith, H. J., Johnston, M. B., & Herz, L. M.
- Venue
- The Journal of Physical Chemistry Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-03-27
- Volume
- 5
- Issue
- 8
- Pages
- 1300-1306
- ISSN
- 1948-7185 (ISSN-L)
- OpenAlex
- W2017524297
- Cited by
- 364
- References
- 2
- FWCI
- 29.71
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Wehrenfennig, C., Liu, M., Snaith, H. J., Johnston, M. B., & Herz, L. M. (2014). Homogeneous Emission Line Broadening in the Organo Lead Halide Perovskite CH3NH3PbI3–xClx. The Journal of Physical Chemistry Letters. https://doi.org/10.1021/jz500434p
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