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Guanidinium Bromide

CAS Number 19244-98-5

Perovskite Materials, Perovskite Precursor Materials

Product Code M2077A1-25g
Price $213 ex. VAT

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Guanidinium bromide (GDBr) and its derivatives are known to promote and enable stable 2D perovskite structures. This is done via  i) the van der Waals interactions between guanidinium cations, and ii) hydrogen−halogen bonding between guanidinium cations and halide ions of different layers.

The presence of the guanidinium cation results in reduced defect density for the perovskite film and a longer carrier lifetime, due to a hydrogen-bonding effect produced by hydrogen from the guanidinium salt.

General Information

CAS number 19244-98-5
Chemical formula CH6BrN3
Molecular weight 139.98 g/mol
Synonyms Guanidine hydrobromide, Guanidine monohydrobromide, GDBr
Classification / Family Guanidinium halides, Perovskite precursor materials, Perovskite solar cells, Perovskite LEDs

Product Details

Purity 98%
Melting point 191 °C
Colour White Powder/crystals

Chemical Structure

GDBr, Diaminomethaniminium fromide, Guanidine hydrobromide, Guanidine monohydroiodide
Chemical structure of Guanidinium bromide; CAS 19244-98-5

MSDS Documentation

Guanidinium bromide MSDSGuanidinium bromide MSDS sheet

Literature and Reviews

  1. Guanidinium: A Route to Enhanced Carrier Lifetime and Open-Circuit Voltage in Hybrid Perovskite Solar Cells, N. De Marco et al., Nano Lett., 16 (2), 1009–1016 (2016); DOI: 10.1021/acs.nanolett.5b04060.
  2. Guanidinium benefit, O. Graydon, Nat. Photonics 10, 145 (2016); doi:10.1038/nphoton.2016.35.
  3. Mixed Iodide–Bromide Methylammonium Lead Perovskite-based Diodes for Light Emission and Photovoltaics, L. Gil-Escrig et al., J. Phys. Chem. Lett., 6 (18), 3743–3748 (2015); DOI: 10.1021/acs.jpclett.5b01716.
  4. Luminescent and Photoconductive Layered Lead Halide Perovskite Compounds Comprising Mixtures of Cesium and Guanidinium Cations, O. Nazarenko et al., Inorg. Chem., 56 (19), 11552–11564 (2017); DOI: 10.1021/acs.inorgchem.7b01204.
  5. Synthesis, Crystal Structures, Optical Properties, and Phase Transitions of the Layered Guanidinium-Based Hybrid Perovskites [C(NH2)3]2MI4; M = Sn, Pb, M. Daub et al., Eur. J. Inorg. Chem., 1120–1126 (2017); DOI: 10.1002/ejic.201601499.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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