Ethylammonium iodide

Order Code: M2066A1
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General Information

CAS number 506-58-1
Chemical formula C2H8IN
Molecular weight 173 g/mol
Synonyms EAI, Ethylamine hydroiodide, Ethanamine hydriodide
Classification / Family Alkylammonium halides, Perovskite precursor materials, Perovskite solar cells, Perovskite LEDs

Product Details

Purity 98%

Melting point

193 °C

Colour Powder/crystals
506-58-1, Ethylammonium-Iodide chemical structure
Chemical structure of Ethylammonium iodide; CAS No. 506-58-1; chemical fomula C2H8IN.



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 [2]. 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.


Literature and Reviews

  1. 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.
  2. Synthesis, structure, and photovoltaic property of a nanocrystalline 2H perovskite-type novel sensitizer (CH3CH2NH3)PbI3, J. Im et al., Nanoscale Res. Lett., 7, 353 (2012);
  3. Cesium-doped methylammonium lead iodide perovskite light absorber for hybrid solar cells, H. Choi et al., Nano Energy 7, 80–85 (2014);
  4. The emergence of perovskite solar cells, M. A. Green et al., Nat. Photonics 8, 506–514 (2014); doi:10.1038/nphoton.2014.134.
  5. 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.