Tris-PCz

CAS Number 1141757-83-6

Electron / Hole Transport Layer Materials, High Purity Sublimed Materials, Host Materials, Materials, Semiconducting Molecules, TADF Materials

MSDS

Tris-PCz, HTL material in TADF-OLED devices

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

Tris-PCz has a tri-carbazole back-boned structure joined at the 3 and 6 positions. The highly-conjugated carbazoles makes Tris-PCz electron-rich, which is widely used as a hole-transport layer material in TADF-OLED devices.

Due to its electron-rich nature, Tris-PCz can form exciplexes with electron-deficient materials (such as B4PyPPM) in highly-efficient OLED devices with TADF characteristics.

Tris-PCz has a high triplet energy (E_T = 2.7 eV), so it is also frequently used as an exciton block layer material to effectively prevent the excitons' energy from being transferred (to the donor or acceptor) to achieve high fluorescence quantum efficiency.

General Information

CAS number	1141757-83-6
Full name	9-Phenyl-3,6-bis(9-phenyl-9Hcarbazol-3-yl)-9H-carbazole
Chemical formula	C₅₄H₃₅N₃
Molecular weight	725.28 g/mol
Absorption	λ_max 305 nm in DCM
Fluorescence	λ_max 415 nm in DCM
HOMO/LUMO	HOMO = 5.6 eV, LUMO = 2.1 eV; T₁ = 2.7 eV [1]
Synonyms	9,9',9''-Triphenyl-9H,9'H,9''H-3,3':6',3''-tercarbazole
Classification / Family	Carbazole derivative, Fluorescent host materials, Phosphorescent host materials, Hole-transport layer materials, Exciton-blocking layer materials, TADF-OLED materials, Organic electronics, Sublimed materials.

Product Details

Purity	Sublimed > 99% (HPLC)
Melting point	TGA: >270 °C (0.5% weight loss)
Appearance	White crystals/powder

Chemical Structure

Tris-PCz structure — Chemical structure of Tris-PCz

Device Structure(s)

Device structure	ITO/HATCN (10 nm)/Tris-PCz (35 nm)/10 wt.% 4CzPN:mCBP (G-EML) (3 nm)/6 wt.% 4CzPN:2 wt.% 4CzTPN-Ph:mCBP (R-EML) (2 nm)/10 wt.% 3CzTRZ:PPT (B-EML) (10 nm)/PPT (50 nm)/LiF (0.8 nm)/Al (100 nm) [2]
Colour	White
Max. Power Efficiency	30.3 lm W⁻¹
Max. Current Efficiency	38.6 cd/A
Max. EQE	17.6%

Device structure	ITO/HATCN (10 nm)/Tris-PCz (35 nm)/10 wt.% 4CzPN:mCBP (G-EML) (5 nm)/6 wt.% 4CzPN:2 wt.% 4CzTPN-Ph:mCBP (R-EML) (4 nm)/10 wt.% 3CzTRZ:PPT (B-EML) (6 nm)/PPT (50 nm)/LiF (0.8 nm)/Al (100 nm) [2]
Colour	White
Max. Power Efficiency	34.1 lm W⁻¹
Max. Current Efficiency	45.6 cd/A
Max. EQE	17.0%

Device structure	ITO/MoO₃ (1 nm)/TAPC (20 nm)/Tris-PCz (10 nm)/Tris-PCz:B4PyPPM:3 wt% Ir(MDQ)₂acac (30 nm)/B4PyPPM (50 nm)/LiF (1 nm)/Al (100 nm) [3]
Colour	Red
Max. Power Efficiency	37.3 lm W⁻¹
Max. Current Efficiency	33.7 cd/A
Max. EQE	20.3%

Device structure	ITO (100 nm)/HATCN (10 nm)/Tris-PCz (30 nm)/mCBP (5 nm)/20 wt% of 3Ph2CzCzBN:mCBP (30 nm)/SF3-TRZ (10 nm)/ 30 wt% of Liq:SF3-TRZ (50 nm)/Liq (2 nm)/ Al (100 nm) [4]
Colour	Blue
Max. Power Efficiency	34.5 lm W⁻¹
Max. Current Efficiency	41.7 cd/A
Max. EQE	17.9%

Device structure	ITO/TAPC (35 nm)/Tris-PCz (10 nm)/Tris-PCz:PIM-TRZ*(1:2) (30 nm)/PIM-TRZ (60 nm)/LiF (1 nm)/Al (100 nm) [5]
Colour	Green
Max. Power Efficiency	71.0 lm W⁻¹
Max. Current Efficiency	52.0 cd/A
Max. EQE	18.6%

Device structure	ITO/4% ReO₃:Tris-PCz (60 nm)/Tris-PCz (15 nm)/Tris-PCz:CN-T2T(1:1) (25 nm)/CN-T2T (50 nm)/Liq (0.5 nm)/Al (100 nm) [6]
Colour	Green
Max. Power Efficiency	46.5 lm W⁻¹
Max. Current Efficiency	37.0 cd/A
Max. EQE	11.9%
Max. Luminance	73, 800 cd/m²

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

Pricing

Grade	Order Code	Quantity	Price
Sublimed (>99% purity)	M2191A1	100 mg	£190
Sublimed (>99% purity)	M2191A1	250 mg	£380
Sublimed (>99% purity)	M2191A1	500 mg	£660
Sublimed (>99% purity)	M2191A1	1 g	£1100

MSDS Documentation

Tris-PCz MSDS sheet

Literature and Reviews

Promising operational stability of high-efficiency organic light-emitting diodes based on thermally activated delayed fluorescence, H. Nakanotani1 et al., Sci. Rep., 3, 2127 (2013); DOI: 10.1038/srep02127.
High-efficiency white organic light-emitting diodes using thermally activated delayed fluorescence, J. Nishide et al., Appl. Phys. Lett. 104, 233304 (2014); doi: 10.1063/1.4882456.
High-performance red organic light-emitting devices based on an exciplex system with thermally activated delayed fluorescence characteristic, S. Yuan et al., Org. Electronics, 39, 10-15 (2016); doi: 10.1016/j.orgel.2016.09.020.

Efficient and stable sky-blue delayed fluorescence organic light-emitting diodes with CIEy below 0.4, C. Chan et al., Nat. Commun., 9, 5036 (2018); DOI: 10.1038/s41467-018-07482-6.
Exciplex-Based Electroluminescence: Over 21% External Quantum Efficiency and Approaching 100 lm/W Power Efficiency, B. Liang et al., J. Phys. Chem. Lett., 10, 2811−2816 (2019); DOI: 10.1021/acs.jpclett.9b01140.
Balance the Carrier Mobility To Achieve High Performance Exciplex OLED Using a Triazine-Based Acceptor, W. Hung et al., ACS Appl. Mater. Interfaces, 8, 4811−4818 (2016); DOI: 10.1021/acsami.5b11895.