Ethylammonium iodide (EAI), like methylammonium iodide, is a precursor used for high-efficiency pervoskite solar cells and LEDs.
(CH3CH2NH3)PbI3 has valence band position at 5.6 eV with an optical band-gap of ca.2.2 eV . In comparison, (CH3NH3)PbI3 has a valence band position at 5.4 eV with an optical band-gap of 1.5 eV. The difference is due to the larger cation effect of (CH3CH2NH3)PbI3, resulting in less conjugation to the lead iodide to widen the band-gap of the perovskite structure.
|Molecular weight||173 g/mol|
|Synonyms||EAI, Ethylamine hydroiodide, Ethanamine hydriodide|
|Classification / Family||Alkylammonium halides, Perovskite precursor materials, Perovskite solar cells, Perovskite LEDs|
Literature and Reviews
- High-performance and high-durability perovskite photovoltaic devices prepared using ethylammonium iodide as an additive, H. Hsu et al., J. Mater. Chem. A, 3, 9271-9277 (2015); DOI: 10.1039/C5TA01563D.
- Synthesis, structure, and photovoltaic property of a nanocrystalline 2H perovskite-type novel sensitizer (Ch2CH2Nh2)PbI3, J. Im et al., Nanoscale Res. Lett., 7, 353 (2012); https://doi.org/10.1186/1556-276X-7-353.
- Cesium-doped methylammonium lead iodide perovskite light absorber for hybrid solar cells, H. Choi et al., Nano Energy 7, 80–85 (2014); https://doi.org/10.1016/j.nanoen.2014.04.017.
- The emergence of perovskite solar cells, M. A. Green et al., Nat. Photonics 8, 506–514 (2014); doi:10.1038/nphoton.2014.134.
- Formamidinium lead trihalide: a broadly tunable perovskite for efficient planar heterojunction solar cells, G. E. Eperon et al., Energy Environ. Sci., 7, 982-988 (2014); DOI: 10.1039/C3EE43822H.
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