SiCzCz
CAS Number 2665768-26-1
High Purity Sublimed Materials, Host Materials, Materials, Semiconducting Molecules, TADF Materials
SiCzCz, phosphorescent host, hole transport and electron blocking layer
Used in conjunction with electron transport to form exciplex host for highly efficient blue phosphorescent organic light-emitting diodes
SiCzCz (CAS number 2665768-26-1) has a structure of an electron rich bicarbazole joined to a tetraphenylsilane onto one of the benzene rings. The bicarbazole donor unit introduced in SiCzCz can produce a shallower HOMO level compared to that of the mono-carbazole analog to reduce the hole injection barrier between the adjacent hole transport layer and emitting layer.
SiCzCz can normally be used as the hole transport main layer for blue OLEDs. SiCzCz has been very successful to be used with the electron transport materials, i.e. SiTrzCz2 to form an exciplex host. It is believed that the introduction of triphenyl silicon unit can stabilise the excited state and polar state of the host material by participating in the conjugated system through the hyperconjugation effect. Blue PhOLED devices based on this material exhibit LT70 = 1113h.
SiCzCz is an isomer to SimCP thus share the closest molecular structure similarity with SimCP. they both can be used as host materials.
General Information
| CAS number | 2665768-26-1 |
|---|---|
| Chemical formula | C48H34N2Si |
| Molecular weight | 666.88 g/mol |
| Photoluminescence | λem 385 nm (in film) |
| HOMO/LUMO | HOMO = 5.55 eV, LUMO = 1.91 eV; ET = 2.92 eV [1] |
| Chemical name | 9-(3-(triphenylsilyl)phenyl)-9H-3,9′-bicarbazole |
| Synonyms | SiCzCz |
| Classification / Family | Arylsilane derivatives, Phosphorescent host materials, Hole transport layer (HTL), Electron blocking layer (EBL), Sublimed materials, Semiconducting small molecules |
Product Details
| Purity | Sublimed* >99.0% (HPLC) |
|---|---|
| Melting point | n.a. |
| Appearance | White powder/crystals |
* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials.
Chemical Structure
Device Structure(s)
| Device structure | ITO/HAT-CN (10 nm)/BCFN (60 nm)/SiCzCz (5 nm)/SiCzCz:SiTrzCz2:BD-01 (35 nm, 0.60:0.27:0.13 w/w/w)/mSiTrz (5 nm)/mSiTrz:Liq (31 nm, 5:5)/LiF (1.5 nm)/Al (80 nm) [2] |
|---|---|
| Colour |
 Blue |
| Max. EQE | 17.6% |
| Max. Power Efficiency | 40.7 Im/W |
| Max. Current Efficiency | 36.3 cd/A |
| Device structure | ITO/HAT-CN (10 nm)/BCFN (60 nm)/SiCzCz (5 nm)/SiCzCz:SiTrzCz2:BD-02 (35 nm, 0.60:0.27:0.13 w/w/w)/mSiTrz (5 nm)/mSiTrz:Liq (31 nm, 5:5)/LiF (1.5 nm)/Al (80 nm) [2] |
|---|---|
| Colour |
Blue |
| Max. EQE | 25.4% |
| Max. Power Efficiency | 35.7 Im/W |
| Max. Current Efficiency | 31.8 cd/A |
| Device structure | ITO/HAT-CN (10 nm)/BCFN (60 nm)/SiCzCz (5 nm)/SiCzCz:SiTrzCz2:PtON-TBBI:t-DABNA (EML 30 nm)/2SiTrzPh (5 nm)/2SiTrzPh:Liq (5:5, 31 nm)/LiF (1.5 nm)/Al (80 nm)[3] |
|---|---|
| Colour |
Blue |
| Max. EQE | 23.7% |
| Max. Current Efficiency | 26.2 cd/A |
| LT95 (hours) | 19.8 |
| Device structure | ITO/HAT-CN (10 nm)/BCFN (60 nm)/SiCzCz (5 nm)/SiCzCz:SiTrzCz2:PtON-TBBI:TBE02 (EML 30 nm)/2SiTrzPh (5 nm)/2SiTrzPh:Liq (5:5, 31 nm)/LiF (1.5 nm)/Al (80 nm)[3] |
|---|---|
| Colour |
Blue |
| Max. EQE | 25.4% |
| Max. Current Efficiency | 36 cd/A |
| LT95 (hours) | 72.9 |
Pricing
| Grade | Order Code | Quantity | Price |
|---|---|---|---|
| Sublimed (>99.0% purity) | M2376A1 | 250 mg | £300 |
| Sublimed (>99.0% purity) | M2376A1 | 500 mg | £480 |
| Sublimed (>99.0% purity) | M2376A1 | 1 g | £760 |
MSDS Documentation
SiCzCz MSDS sheetLiterature and Reviews
- Superbly long lifetime over 13,000 h for multiple energy transfer channels in deep blue phosphorescence organic light-emitting diodes with Ir complex under CIEy of 0.17, K. Kim et al., Chem. Eng. J. 448, 137671 (2022); DOI: 10.1016/j.cej.2022.137671.
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Exceptionally stable blue phosphorescent organic light-emitting diodes, J. Sun et al., Nat. Photon. 16, 212–218 (2022); DOI: 10.1038/s41566-022-00958-4.
- Highly Efficient and Stable Deep-blue OLEDs Based on Narrowband Emitters Featuring Orthogonal Spiro-configured Indolo[3,2,1-de]acridine Structure, G. Meng et al., Chem. Sci., 13, 5622-5630 (2022); DOI: 10.1039/D2SC01543A.