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Exciton Features in 0-, 2-, and 3-Dimensional Networks of [PbI6]4-Octahedra
Abstract
We have investigated reflection spectra at 4 K for single crystals of (CH 3 NH 3 ) 4 PbI 6 ·2H 2 O which consists of isolated [PbI 6 ] 4- octahedra, (C 10 H 21 NH 3 ) 2 PbI 4 and (CH 3 NH 3 )PbI 3 , which consist 2- and 3-dimensional networks of [PbI 6 ] 4- , respectively. The formation energy of the lowest exciton state increases from 1.633 eV to 3.4 eV with decreasing the dimensionality in the crystal structure, from the transfer energy between the adjacent octahedra is estimated to be about 0.5 eV. The on-site Coulomb energy in the octahedron is estimated to be 2.3 eV. We suggest that the large on-site Coulomb energy enhances the exciton binding energy, especially in the 2-dimensional system.
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Cited by
Excitons versus free charges in organo-lead tri-halide perovskites
D’Innocenzo, V., Grancini, G., Alcocer, M. J. P., Kandada, A. R. S., Stranks, S. D., Lee, M. M., Lanzani, G., Snaith, H. J., & Petrozza, A. (2014) · Nature Communications · doi:10.1038/ncomms4586 · Cited by 1,767
Brenner, T. M., Egger, D. A., Kronik, L., Hodes, G., & Cahen, D. (2016) · Nature Reviews Materials · doi:10.1038/natrevmats.2015.7 · Cited by 1,557
Jinnouchi, R., Lahnsteiner, J., Karsai, F., Kresse, G., & Bokdam, M. (2019) · Physical Review Letters · doi:10.1103/physrevlett.122.225701 · Cited by 635
Löper, P., Stuckelberger, M., Niesen, B., Werner, J., Filipič, M., Moon, S.-J., Yum, J.-H., Topič, M., De Wolf, S., & Ballif, C. (2015) · The Journal of Physical Chemistry Letters · doi:10.1021/jz502471h · Cited by 587
Metadata
- Authors
- Hirasawa, M., Ishihara, T., & Goto, T.
- Venue
- Journal of the Physical Society of Japan
- Publisher
- Physical Society of Japan
- Published
- 1994-10-15
- Volume
- 63
- Issue
- 10
- Pages
- 3870-3879
- ISSN
- 0031-9015 (ISSN-L)
- 1347-4073
- OpenAlex
- W2077907300
- Cited by
- 168
- References
- 0
- FWCI
- 2.44
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Exciton Features in 0-, 2-, and 3-Dimensional Networks of [PbI6]4-Octahedra. https://app.cochat.ai/papers/10.1143/jpsj.63.3870
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- Hirasawa, M., Ishihara, T., & Goto, T. (1994). Exciton Features in 0-, 2-, and 3-Dimensional Networks of [PbI6]4-Octahedra. Journal of the Physical Society of Japan. https://doi.org/10.1143/jpsj.63.3870
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