4,4",4""-Tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA), a starburst type molecule, gives very homogeneous thin-films that are ideal as hole-injection layers due to its low ionisation potential (of around 5.1 eV [1]).

It has been demonstrated that p-i-n organic light-emitting diodes (OLEDs) incorporating a p-doped transport layer that comprises tungsten oxide (WO₃) and 2-TNATA significantly improves hole injection and conductivity of the Alq₃ based p-i-n OLEDs with long lifetime, low driving voltage (3.1 V), and high power efficiency (3.5 lm/W) at 100 cd/m² [2].

General Information

Product Details

*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

Device Structure(s)

Device structure	ITO/2-TNATA:33% WO3 (100 nm)/NPB (10 nm)/Alq3 (30 nm)/Bphen (20 nm)/BPhen: 2% Cs (10 nm)/Al (150 nm) [2]
Colour	Green
Operating Voltage for 100 cd/m2	3.1 V
Current Efficiency for 20 mA/cm2	4.4 cd/A
Power Efficiency for 20 mA/cm2	3.3 lm W−1

Device structure	ITO/2-TNATA (60 nm)/NPB (15 nm)/TAT* (30 nm)/ Alq3 (30 nm)/LiF (1 nm)/Al (200 nm) [4]
Colour	Deep Blue
EQE at 10 mA/cm2	7.18
Current Efficiency at 10 mA/cm2	3.64 cd/A
Power Efficiency at 10 mA/cm2	1.87 lm W−1

Device structure	ITO/2T-NATA (17 nm)/TPAHQZn* (25 nm)/NPBX* (15 nm)/BCP (8 nm)/ Alq3 (35 nm)/LiF (0.5 nm)/Al (120 nm) [6]
Colour	White
Max. EQE	17.5%
Max. Luminance	12,930 cd/m2 (12 V)
Max. Current Efficiency	2.66 cd/A (10 V)

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) [7]
Colour	Red
Max. Luminance	25,000 cd/m2
Max. Current Efficiency	12 cd/A

Device structure	glass/Ag (100 nm)/ITO (90 nm)/2-TNATA (60 nm)/NPB (15 nm)/ DPVBi:DCJTB (1.2%, 30 nm)/Alq3 (20 nm)/Li (1.0 nm)/Al (2.0 nm)/Ag (20 nm)/ITO(63 nm)/SiO2 (42 nm) [8]
Colour	White
Max. Luminance	14,500 cd/m2
Max. Power Efficiency	1.4 lm W−1

Device structure	glass/ITO (150 nm)/2-TNATA (60 nm)/NPB (15 nm)/DPVBi:DCJTB (20 nm, 0.08%)/Alq3 (35 nm)/Li (1.0 nm)/Al (100 nm) [9]
Colour	White
Max. EQE	2.47%
Max. Luminance	64,200 cd/m2
Max. Power Efficiency	4.27 lm W−1

Device structure	ITO (150 nm)/2T-NATA (25 nm)/NPB (5 nm) ITCTA (10 nm)/GD* 10 wt% doped GH* (20 nm)/ TPBi (30 nm)/ LiF (0.5 nm)/ AI (l00 nm) [10]
Colour	Green
Current Efficiency for 20 mA/cm2	62.6 cd/A
Power Efficiency for 20 mA/cm2	61.4 lm W−1

*For chemical structure information, please refer to the cited references.

Pricing

MSDS Documentation

2-TNATA MSDS sheet

Literature and Reviews

1. Exciplex formation at the organic solid/solid interface and tuning of the emission color in organic electroluminescent devices, K. Okumoto et al., , J. Lumin. 87–89, 1171 (2000). doi:10.1016/S0022-2313(99)00584-0.
2. 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.
3. Pure White Organic Light-Emitting Diode with Lifetime Approaching the Longevity of Yellow Emitter, J-H. Jou et al., ACS Appl. Mater. Interfaces, 3, 3134–3139 (2011). dx.doi.org/10.1021/am2006383.
4. Exceedingly efficient deep-blue electroluminescence from new anthracenes obtained using rational molecular design, S-K. Kim et al., J. Mater. Chem., 18, 3376–3384 (2008). DOI: 10.1039/B805062G.
5. Control of the Color Coordinates of Blue Phosphorescent Organic Light-Emitting Diodes by Emission Zone, S. H. Rhee et al., ECS Solid State Letters, 3 (3) R7-R10 (2014). DOI: 10.1149/2.003403ssl.
6. White organic light-emitting devices based on novel (E)-2-(4-(diphenylamino) styryl)quinolato zinc as a hole- transporting emitter, G. Ding et al., Semicond. Sci. Technol. 24, 025016 (2009). stacks.iop.org/SST/24/025016.
7. 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.
8. White top-emitting organic light-emitting diodes using one-emissive layer of the DCJTB doped DPVBi layer, M. Kim et al., Thin Solid Films 516, 3590–3594 (2008); doi:10.1016/j.tsf.2007.08.078.
9. High Efficiency White Organic Light-Emitting Diodes from One Emissive Layer, C. Jeong et al., Jpn. J. Appl. Phys., 46 (2), 806-809 (2007); http://iopscience.iop.org/1347-4065/46/2R/806.
10. High-Efficiency Green Phosphorescent Organic Light-Emitting Devices, L. Li et al., ICEOE, V4-96-97 (2011); DIO:10.1109/ICEOE.2011.6013434.

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.