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Product Code M411
Price $288.00 ex. VAT

Zn(BTZ)2, highly efficient electroluminescent material and ETL material for OLEDs

High-purity (>99.0%) and available online for priority dispatch

Bis(2-(2-hydroxyphenyl)benzothiazolate) zinc (II), Zn(BTZ)2, is one of the most studied high efficient electroluminescent material. It has also been widely used as an excellent electron transporting materials in OLEDs [1].

Zn(BTZ)exhibits an unusual broad electroluminescent (EL) emission and for this reason, a single-emitting component for white light emitting diodes can be fabricated by using Zn(BTZ)2 as emitting layer material [2]. It has also been reported that with an insertion of rubrene layer, the purity of the white light emitting of Zn(BTZ)can be improved [3].

General Information

CAS number 58280-31-2
Chemical formula C26H16N2O2S2Zn
Molecular weight 517.94 g/mol
Absorption λmax 287,334 nm (in CH2Cl2)
Fluorescence λem 458 nm (in CH2Cl2)
HOMO/LUMO HOMO = 5.41 eV, LUMO = 2.65 eV
  • Zn(BTZ)2
  • Bis[2-(2-benzothiazolyl-N3)phenolato-O]zinc
  • Bis(2-(2-hydroxyphenyl)benzothiazolate)zinc
  • Bis[2-(2-hydroxyphenyl)benzothiazolato]zinc(II)
  • Bis[2-(2-benzothiazoly)phenolato]zinc(II)
Classification / Family Organometallic, OLEDs, White light emitter, Electron transport layer material (ETL), Materials science.

Product Details

Purity Sublimed* >99.0%
Melting point 305-310 °C (lit.)
Color Light Yellow 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.

Chemical Structure

ZN(BTZ)2 chemical structure
Chemical Structure of Bis(2-(2-hydroxyphenyl)benzothiazolate)zinc, Zn(BTZ)2

Device Structure(s)

Device structure ITO/TPD (50 nm)/Zn(BTZ)2(50 nm)/MgIn (200 nm) [4]
Colour Greenish-White white light emitting device
Max. Luminance 10,190 cd/m2
Max. Power Efficiency 0.89 lm W−1
Device structure ITO/2T-NATA (20 nm)/NPB (60 nm)/Zn(BTZ)2:Ir(DBQ)2(acac) (80 nm)/Alq3 (70 nm)/LiF (1nm)/Al (200 nm) [5]
Color Red red light emitting device
Max. Luminance 25,000 cd/m2
Max. Current Efficiency 12 cd/A
Device structure ITO/PVK:TPD (30 nm)/Zn(BTZ)2:0.05 wt.% Rubrene (50 nm)/Al (100 nm) [6]
Colour White white light emitting device
Max. EQE 0.63%
Max. Luminance 4,048 cd/m2
Max. Current Efficiency 4.05 cd/A
Device structure ITO/NPB/CBP:3 wt%TBPe:1 wt%rubrene/Zn(BTZ)2:5 wt%Ir(piq)2(acac)/Zn(BTZ)2/Mg:Ag [7]
Colour White white light emitting device
Max. EQE 2.4%
Max. Luminance 23,000 cd/m2


hplc trace of znbtz2
HPLC trace of Bis(2-(2-hydroxyphenyl)benzothiazolate)zinc, Zn(BTZ)2.

MSDS Documentation

Zn(BTZ)2 MSDSZn(BTZ)2 MSDS sheet

Literature and Reviews

  1. Structures, Electronic States, and Electroluminescent Properties of a Zinc(II) 2-(2-Hydroxyphenyl)benzothiazolate Complex, G. Yu et al., J. Am. Chem. Soc., 125 (48), 14816–14824 (2003).
  2. Charge Carrier Transporting, Photoluminescent, and Electroluminescent Properties of Zinc(II)-2-(2-hydroxyphenyl)benzothiazolate Complex, X. Xu, Chem. Mater.,19 (7), 1740–1748 (2007), DOI: 10.1021/cm062960b.
  3. Effect of inserting of thin Rubrene layer on performance of Organic Light-Emitting Diodes based on Zn(BTZ)2, R. L. Tomova et al., J. Phys.: Conf. Ser., 253, 012048 (2010), doi:10.1088/1742-6596/253/1/012048.
  4. White-Light-Emitting Material for Organic Electroluminescent Devices, Y. Hamada et al., Jpn. J. Appl. Phys. 35 L1339-L1341 (1996);
  5. Effect of A Series of Host Material on Optoelectronic Performance of Red Phosphorescent OLED, H. Li et al., Chin. J. Luminance, 5, 585-589, 2009.
  6. White organic light-emitting devices using Zn(BTZ)2 doped with Rubrene as emitting layer,J. Zheng et al., Chin. Sci. Bull., 50, 509-513 (2005); DOI: 10.1360/04wb0050.
  7. Influence of Dopant Concentration on Electroluminescent Performance of Organic White-Light-Emitting Device with Double-Emissive-Layered Structure, M. Wu et al., Chin. Phys. Lett., 25, 294-297 (2008).
  8. White organic light-emitting diodes based on a novel Zn complex with high CRI combining emission from excitons and interface-formed electroplex, Y. Hao et al., Org. Electronics 12, 136–142 (2011).
  9. The effect of small-molecule electron transporting materials on the performance of polymer solar cells, H. Du et al., Thin Solid Films, 519, 4357 (2011).

To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.

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