CAS Number 898546-82-2
Fast and secure
CzSi, TADF host material for blue electrophosphorescence
Exhibits enhanced morphological and superior electrochemical stability
CzSi is 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 electrophosphorescence.
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.
|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 |
|Classification / Family||Carbazole, TADF blue emitter host materials, Hole-transport layer materials, Phosphorescent organic light-emitting devices (PHOLEDs), Sublimed materials|
|Purity||Sublimed >99.0% (HPLC)|
|Melting point||TGA: >320 °C (0.5% weight loss)|
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials.
|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) |
|Max. Current Efficiency||30.6 cd/A|
|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) |
|Max. Current Efficiency||22.3 cd/A|
|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) |
|Max. Current Efficiency||11.4 cd/A|
|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) |
|Max. Current Efficiency||25.6 cd/A|
|Max. Power Efficiency||20.2 Im/W|
*For chemical structure information, please refer to the cited references.
|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|
Literature 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 .
- En Route to High External Quantum Efficiency (~12%), Organic True-Blue-Light-Emitting Diodes Employing Novel Design of Iridium (III) Phosphors, Y-C. Chiu et al., Adv. Mater., 21, 2221–2225 (2009); DOI: 10.1002/adma.200802546.
- Highly efficient white organic light-emitting diodes based on broad excimer emission of iridium complex, G. Zhang et al., Org. Electronics 11, 1165–1171 (2010); doi:10.1016/j.orgel.2010.04.016.
To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.