CzSi
CAS Number 898546-82-2
Charge Transport Layer Materials, Fluorescent Host Materials, High Purity Sublimed Materials, Hole Transport Layer Materials, Host Materials, Materials,
CzSi, TADF host material for blue electro-phosphorescence
Exhibits enhanced morphological and superior electrochemical stability, 9-(4-tert-Butylphenyl)-3,6-bis(triphenylsilyl)-9H-carbazole, CAS No. 898546-82-2, Sublimed ≥99.0%
CzSi is a TADF host material known for its high triplet energy, wide band-gap, and high glass-transition temperature (Tg >131 °C). It is one of the most widely-used TADF host materials for blue electro-phosphorescence.
It possesses bulky, sterically-hindered triphenylsilyl substitutions on electrochemically-active C3 and C6 positions of carbazole. With a nearly-perfect 90° dihedral angle between its carbazole and tert-butylphenyl groups, CzSi exhibits enhanced morphological and superior electrochemical stability.
General Information
| CAS number | 898546-82-2 |
|---|---|
| Full name | 9-(4-tert-Butylphenyl)-3,6-bis(triphenylsilyl)-9H-carbazole |
| Chemical formula | C58H49NSi2 |
| Molecular weight | 816.19 g/mol |
| Absorption | λmax 275 nm in CH2Cl2 |
| Fluorescence | λem 354 nm in CH2Cl2 |
| HOMO/LUMO | HOMO = 6.0 eV, LUMO = 2.5 eV; T1=3.02 eV [1] |
| Classification / Family | Carbazole, TADF blue emitter host materials, Hole-transport layer materials, Phosphorescent organic light-emitting devices (PHOLEDs), Sublimed materials |
Product Details
| Purity | Sublimed >99.0% (HPLC) |
|---|---|
| Melting point | TGA: >320 °C (0.5% weight loss) |
| Appearance | Off-white powder/crystals |
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials.
Chemical Structure
Device Structure(s)
| Device structure | ITO/PEDOT:PSS (30 nm)/DPAS (17.5 nm)/TCTA (2.5 nm)/CzSi doped with 8 wt% FIrpic (25 nm)/TAZ (50 nm)/LiF (0.5 nm)/Al (150 nm) [2] |
|---|---|
| Colour | Blue 
|
| Max. Current Efficiency | 30.6 cd/A |
| Max. EQE | 15.7% |
| Max. Power Efficiency | 26.7 Im/W |
| Device structure | ITO/TAPC (30 nm)/TCTA (10 nm)/CzSi (3 nm)/CzSi doped with 4 wt% of 2c* (25 nm)/UGH2 doped with 4 wt% of 2c*(3 nm)/UGH2 (2 nm)/TmPyPB (50 nm)/LiF (0.8 nm)/Al (150 nm) [3] |
|---|---|
| Colour | Blue
|
| Max. Current Efficiency | 22.3 cd/A |
| Max. EQE | 11% |
| Max. Power Efficiency | 16.7 Im/W |
| Device structure | (ITO)/a-NPD (30 nm)/TCTA (20 nm)/CzSi (3 nm)/CzSi doped with 6 wt% 2* (35 nm)/UGH2 doped with 6* wt%Ir(fppz)2(dfbdp) (3 nm)/UGH2 (2 nm)/BCP (50 nm)/Cs2CO3 (2 nm)/Ag (150 nm) [4] |
|---|---|
| Colour | Blue
|
| Max. Current Efficiency | 11.4 cd/A |
| Max. EQE | 11.9% |
| Max. Power Efficiency | 7.9 Im/W |
| Device structure | ITO/NPB (30 nm)/TCTA (20 nm)/FIrpic:CzSi (7%, 20 nm)/(DMBA)2Ir(acac):CBP (5%, 200 nm)/TAZ (50 nm)/ LiF (1 nm)/Al (100 nm) [5] |
|---|---|
| Colour | White 
|
| Max. Current Efficiency | 25.6 cd/A |
| Max. EQE | 12.7% |
| Max. Power Efficiency | 20.2 Im/W |
*For chemical structure information, please refer to the cited references.
Pricing
| Grade | Order Code | Quantity | Price |
|---|---|---|---|
| Sublimed (>99.0% purity) | M2104A1 | 100 mg | £250 |
| Sublimed (>99.0% purity) | M2104A1 | 250 mg | £500 |
| Sublimed (>99.0% purity) | M2104A1 | 500 mg | £850 |
| Sublimed (>99.0% purity) | M2104A1 | 1 g | £1300 |
MSDS Documentation
CzSi MSDS sheetLiterature and Reviews
- FIrpic: archetypal blue phosphorescent emitter for electroluminescence, E. Baranof et al., Dalton Trans., 44, 8318 (2015); DOI: 10.1039/c4dt02991g.
- Highly Efficient Organic Blue Electrophosphorescent Devices Based on 3,6-Bis(triphenylsilyl)carbazole as the Host Material, M-H. Tsai et al., Adv. Mater., 18, 1216–1220 (2006); DOI: 10.1002/adma.200502283.
- Iridium(III) Complexes of a Dicyclometalated Phosphite Tripod Ligand: Strategy to Achieve Blue Phosphorescence Without Fluorine Substituents and Fabrication of OLEDs, C-H. Lin et al., Angew. Chem., 123, 3240 –3244 (2011); DOI: 10.1002/ange.201005624 .