Ethylammonium Iodide, EAI

CAS Number 506-58-1

Materials, Perovskite Materials, Perovskite Precursor Materials

Overview | Specifications | MSDS | Literature and Reviews | Resources and Support

Ethylammonium iodide (EAI), like methylammonium iodide, is a precursor used for high-efficiency perovskite 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.

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

Chemical Structure

MSDS Documentation

Ethylammonium iodide MSDS sheet

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.

Resources and Support

Perovskite Solar Cells: Methods of Increasing Stability & Durability

This article follows up on a previous article - Perovskite Solar Cells: Causes of Degradation, and aims to introduce some methods that have been adapted to improve perovskite solar cell stability.

Learn more...