DNTPD

CAS Number 199121-98-7

Charge Transport Layer Materials, High Purity Sublimed Materials, Hole Injection Layer Materials, Hole Transport Layer Materials, Materials, OLED Materials, Semiconducting Molecules

MSDS

DNTPD, HTL and HIL material in OLED and perovskite solar cell devices

Used to improve the current efficiency at ITO interface

Bearing four triarylamine units, DNTPD is electron rich and normally used as hole transport or hole injection layer material in OLED and perovskite solar cell devices. It is an extended structure of TPD and NPB that are widely used in organic electronics.

DNTPD layer at ITO interface can reduce the hole injection barrier while at the same time improve the current efficiency by balancing the holes and electrons in the emitting layer of an OLED device.

General Information

CAS number	199121-98-7
Full name	N1,N1'-(Biphenyl-4,4'-diyl)bis(N1-phenyl)-N4,N4-di-m-tolylbenzene-1,4-benzenediamine
Chemical formula	C₆₄H₅₄N₄
Molecular weight	879.1 g/mol
Absorption*	λ_max 326 nm in DCM
Fluorescence	λ_em 473 nm in DCM
HOMO/LUMO	HOMO = 5.1 eV, LUMO = 2.1 eV [1]
Synonyms	N,N'-Bis{4-[bis(3-methylphenyl)amino]phenyl}-N,N'-diphenyl-4,4'-biphenyldiamine
Classification / Family	Triarylamines, Organic electronics, Hole-injection layer materials (HIL), Hole transport layer (HTL) materials, Sublimed materials.

* Measurable with an USB spectrometer, see our spectrometer application notes.

Product Details

Purity	Sublimed* >99% (HPLC)
Melting point	TGA: >250 °C (0.5% weight loss)
Appearance	Yellow powder/crystals

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials.

Chemical Structure

Sublimed DNTPD structure — Chemical structure of DNTPD

Device Structure(s)

Device structure	ITO/DNTPD (40nm)/Bebq₂:Ir(mphmq)₂(tmd) (3%, 30 nm)/Bebq₂ (20 nm)/LiF (0.5 nm)/Al (100 nm) [2]
Colour	Red
Max. Power Efficiency	32.0 lm W^-1
Max. Current Efficiency	30.1 cd/A
Max. EQE	24.6%

Device structure	ITO/DNTPD (40nm)/Bebq₂:Ir(mphmq)₂acac (3%, 30 nm)/Bebq₂ (20 nm)/LiF (0.5 nm)/Al (100 nm) [2]
Colour	Red
Max. Power Efficiency	32.7 lm W^-1
Max. Current Efficiency	29.1 cd/A
Max. EQE	22.2%

Device structure	ITO (150 nm)/DNTPD (60 nm)/NPB (20 nm)/mCP (10 nm)/mCPPO1:FCNIrpic (30 nm, 3 %)/TSPO1(20 nm)/LiF (1 nm)/Al (200 nm) [3]
Colour	Blue
Power Efficiency@100 cd/cm²	19.7 lm W^-1
EQE@100 cd/cm²	22.3%

Device structure	ITO (150nm)/DNTPD (60 nm)/NPB (5 nm)/FPCA (10 nm)/mCPPO1:FCNIrpic (30 nm, 3%)/TSPO1 (25 nm)/LiF(1 nm)/Al(200 nm) [4]
Colour	Blue
Max. Power Efficiency	25.2 lm W^-1
Max. Current Efficiency	26.0 cd/A
Max. EQE	22.0%

Device structure	ITO (150 nm)/DNTPD (60 nm)/NPB (20 nm)/FPCA (10 nm)/BSFM*:Ir(ppy)₃/TSPO1 (25 nm)/LiF (1 nm)/Al (200 nm) [4]
Colour	Green
Max. Power Efficiency	58.5 lm W^-1
Max. Current Efficiency	79.0 cd/A
Max. EQE	24.5%

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

Pricing

Grade	Order Code	Quantity	Price
Sublimed (>99% purity)	M2193A1	250 mg	£340
Sublimed (>99% purity)	M2193A1	500 mg	£560
Sublimed (>99% purity)	M2193A1	1 g	£900

MSDS Documentation

DNTPD MSDS sheet

Literature and Reviews

Blue Phosphorescent Organic Light-Emitting Devices with the Emissive Layer of mCP:FCNIr(pic), J. Jang et al., Adv. Mater. Sci. & Eng., 192731 (2012); doi:10.1155/2012/192731.
Highly Efficient Red Phosphorescent Dopants in Organic Light-Emitting Devices, D. Kim et al., Adv. Mater., 23, 2721–2726 (2011); DOI: 10.1002/adma.201100405.
External Quantum Effi ciency Above 20% in Deep Blue Phosphorescent Organic Light-Emitting Diodes, S. Jeon et al., Adv. Mater., 23, 1436–1441 (2011); DOI: 10.1002/adma.201004372.

Indolo Acridine-Based Hole-Transport Materials for Phosphorescent OLEDs with Over 20% External Quantum Efficiency in Deep Blue and Green, M. Park et al., Chem. Mater., 23, 4338–4343 (2011); doi: 10.1021/cm201634w.
The Real Role of 4,4'-Bis[N-[4-{N,N-bis(3-methylphenyl)amino}phenyl]-Nphenylamino]biphenyl (DNTPD) Hole Injection Layer in OLED: Hole Retardation and Carrier Balancing, H. Oh et al., Bull. Korean Chem. Soc., 35 (3) 929; dio: 10.5012/bkcs.2014.35.3.929.