n-Butylammonium bromide

Order Code: M2058A1
MSDS sheet


(excluding Taxes)


General Information

CAS number 15567-09-6
Chemical formula C4H12BrN
Molecular weight 154.05 g/mol
Synonyms BABr, 1-Butanamine hydrobromide, 1-Butanaminium bromide, 
Classification / Family Perovskite precursor materials, Perovskite solar cells, Perovskite LEDs

Product Details


≥ 98%

Melting point

205.4 °C

Colour White powder/crystals

n-Butylammonium bromide, BABr, Butanamine hydrobromide

Chemical structure of n-butylammonium bromide; CAS No. 15567-09-6; chemical fomula C4H12BrN.


N-Butylammonium bromide (BABr) is commonly used to tune colloidal perovskite nanoplatelet structures for desired absorption/emission energy and device performance for perovskite LEDs and Solar cells. [1]

When larger-group ammonium halides that act as surfactants (such as BAI or BABr) are added to the perovskite precursor solution, they dramatically constrain the growth of 3D perovskite grain. This results in the production of crystallites with dimensions as small as 10 nm, and a film roughness of less than 1 nm [2].

Device structure  ITO (150 nm)/HTL (30 nm)/BABr:MAPbBr3 (20:100) (70 nm) /TPBi (60 nm)/LiF (1.2 nm)/Al (100 nm) [2]
Colour Green green
Current Efficiency @ 1000 cd/m2 17.1 cd/A
MAax Power Efficiency 13.0 lm W−1
Max EQE 9.3%


Literature and reviews

  1. Highly Tunable Colloidal Perovskite Nanoplatelets through Variable Cation, Metal, and Halide Composition, M. C. Weidman et al., ACS Nano, 10 (8), 7830–7839 (2016); DOI: 10.1021/acsnano.6b03496.
  2. Efficient perovskite light-emitting diodes featuring nanometre-sized crystallites, Z. Xiao et al., Nat. Photonics, 11, 108–115 (2017); doi:10.1038/nphoton.2016.269.
  3. Efficient ambient-air-stable solar cells with 2D–3D heterostructured butylammonium-caesium-formamidinium lead halide perovskites, Z. Wang et al., Nat. Energy, 6 17135 (2017); doi:10.1038/nenergy.2017.135.
  4. Ruddlesden–Popper Hybrid Lead Iodide Perovskite 2D Homologous Semiconductors, C. C. Stoumpos et al., Chem. Mater., 28 (8), 2852–2867 (2016); DOI: 10.1021/acs.chemmater.6b00847.

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