Tris(8-hydroxyquinoline)aluminum(III), commonly known as Alq3, is widely used in organic light-emitting diodes (OLEDs) as an electron-transport material (ETM) and emitting layer material (ELM) due to its high thermal stability, high quantum yield of fluorescence and high electron-transport ability.
Alq3 as the electron-transport and emitting layer material was the first efficient low molecular weight OLED reported by Tang in 1987 [1]. Since then, metaloquinolates have become the focus of new electroluminescent materials research, with Alq3 being the most studied.
General Information
Full name
Tris(8-hydroxyquinoline)aluminum
Synonyms
Alq3
8-Hydroxyquinoline aluminum salt
Aluminum 8-hydroxyquinolinate
Aluminum oxinate
Tris(8-hydroxyquinolinato)aluminum
CAS number
2085-33-8
Molecular formula
C27H18AlN3O3
Molecular weight
459.43 g/mol
Absorption
λmax 259 nm (in THF)
Fluorescence
λmax 512 nm (in THF)
HOMO / LUMO
HOMO 5.62 eV LUMO 2.85 eV
Classification / Family
Organometallic, Electron transport layer (ETL), Electron injection layer (EIL), OLED emitting layer (ELM)
Product Details
Purity
>99% (sublimed)
Melting point
415.4 °C (DSC onset)
Appearance
Yellow-greenish powder
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials for OLED devices page.
*For chemical structure information please refer to the cited references.
Characterisation
Pricing
Grade
Order Code
Quantity
Price
Sublimed (>99% purity)
M381
5 g
£159
Sublimed (>99% purity)
M381
10 g
£259
MSDS Documentation
Alq3 MSDS sheet
Literature and Reviews
Organic electroluminescent diodes, C. Tang et al., Appl. Phys. Lett. 51, 913 (1987)
High-efficiency red electroluminescence from a narrow recombination zone confinedby an organic double heterostructure, Z. Xie et al., Appl. Phys. Lett., 79, 1048 (2001); doi: 10.1063/1.1390479 .
Very low turn-on voltage and high brightness tris-(8-hydroxyquinoline) aluminumbasedorganic light-emitting diodes with a MoOx p-doping layer, G. Xie et al., Appl. Phys. Lett., 92, 093305 (2008); doi: 10.1063/1.2890490.
Efficient electrophosphorescence using a doped ambipolar conductive molecular organic thin film, C. Adachi et aL., Org. Electronics, 2(1), 37-43 (2001), doi:10.1016/S1566-1199(01)00010-6.
High efficiency white organic light-emitting devices by effectively controlling exciton recombination region, F. Guo et al., Semicond. Sci. Technol. 20, 310–313 (2005).
Highly Power Efficient Organic Light-Emitting Diodes with a p-Doping Layer, C-C. Chang et al., Appl. Phys. Lett., 89, 253504 (2006); doi: 10.1063/1.2405856.
Organic light-emitting diodes with improved hole-electron balance by using copper phthalocyanine/aromatic diamine multiple quantum wells, Y. Qiu et al., Phys. Lett., 80, 2628 (2002); Appl. doi: 10.1063/1.1468894.
Molecular Orbital Study of the First Excited State of the OLED Material Tris(8-hydroxyquinoline)aluminum(III), M. D. Halls et al., Chem. Mater., 13 (8), 2632–2640 (2001), DOI: 10.1021/cm010121d.
Organic electroluminescent devices with improved stability, S. A. Van Slyke et al., Appl. Phys. Lett. 69, 2160 (1996); http://dx.doi.org/10.1063/1.117151
Metal−Alq3 Complexes: The Nature of the Chemical Bonding, A. Curioni et al., J. Am. Chem. Soc., 121 (36), pp 8216–8220 (1999).
Enhancement of power conversion efficiency of P3HT:PCBM solar cell using solution processed Alq3 film as electron transport layer, B. Y. Kadem et al., J Mater Sci: Mater Electron 26:3976–3983 (2015), DOI 10.1007/s10854-015-2933-3.
The impurity effects on OLEDs via transient electroluminescence analysis, C.-F. Lin et al., IEEE 17-20 (2015), 10.1109/AM-FPD.2015.7173184.
To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.