TSBPA
CAS Number 205327-13-5
Dopant Materials, High Purity Sublimed Materials, Materials, OLED Materials, Semiconducting Molecules, TADF Materials
TSBPA, HTL material for blue PhOLEDs
High-purity (>99.0%) and available online for priority dispatch
4,4'-(Diphenylsilanediyl)bis(N,N-diphenylaniline) (TSBPA) is diphenylsilyl based with two electron donating triphenylamine units. For its electron rich nature, TSBPA is normally used as a high triplet energy hole transport material for blue phosphorescent organic light-emitting diodes (PHOLEDs).
Also due to its electron donating nature, TSBPA can also be used together with electron accepting materials to form exciplex as emitting layer materials. Green PhOLEDs based on TSBPA:PO-T2T exciplex showed TADF emission with close to the maximum theoretical power efficiency and EQE of 60.9 cd/A, 71 Im/W and 20% respectively.
General Information
| CAS number | 205327-13-5 |
|---|---|
| Chemical formula | C48H38N2Si |
| Molecular weight | 670.91 g/mol |
| Absorption | λmax 309 nm in DCM |
| Fluorescence | λem 376 nm in DCM |
| HOMO/LUMO | HOMO = 5.51 eV, LUMO = 2.30 eV, ET =2.9 eV [1] |
| Full chemical name | 4,4'-(Diphenylsilanediyl)bis(N,N-diphenylaniline) |
| Synonyms | TSBPA |
| Classification / Family | Triphenylamine derivatives, Hole transport layer (HTL), Electron blocking layer (EBL), TADF exciplex materials, Phosphorescent organic light-emitting diodes (PHOLEDs), Sublimed materials |
Product Details
| Purity | Sublimed >99.0% (HPLC) |
|---|---|
| Melting point | mp = 213 °C, Tg = 84 °C |
| Appearance | 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/ NPB (30 nm)/TSBPA (10 nm)/TSBPA:POT2T (20nm)/PO-T2T(50 nm)/LiF(1 nm)/Al (100 nm) [1] |
|---|---|
| Colour |
 Green |
| Max. Luminance | 31,000 cd/m2 |
| Max. EQE | 20.0% |
| Max. Current Efficiency | 60.9 cd/A |
| Max. Power Efficiency | 71.0 Im/W |
| Device structure | ITO/NPB (40 nm)/TSBPA (10 nm)/DDMA-TXO2 (I):DPEPO (30 nm)/DPEPO (10 nm)/TPBi (40 nm)/LiF/Al [2] |
|---|---|
| Colour |
 Blue |
| Max. Luminance | 4,204 cd/m2 |
| Max. EQE | 21.2% |
| Max. Current Efficiency | 36.8 cd/A |
| Max. Power Efficiency | 27.5 Im/W |
| Device structure | ITO/NPB (40 nm)/TSBPA (10 nm)/DDMA-TXO2 (III):DPEPO (30 nm)/DPEPO (10 nm)/TPBi (40 nm)/LiF/Al [2] |
|---|---|
| Colour |
Blue |
| Max. Luminance | 2,765 cd/m2 |
| Max. EQE | 22.6% |
| Max. Current Efficiency | 31.7 cd/A |
| Max. Power Efficiency | 24.3 Im/W |
| Device structure | ITO/NPB (40 nm)/TSBPA (10 nm)|TSBPA:PO-T2T 1:1 in 50 vol % UGH-3 (40 nm)|POT2T (50 nm)|LiF (1 nm)|Al (100 nm) [3] |
|---|---|
| Colour |
Green |
| Max. EQE | 19.2 % |
Pricing
| Grade | Order Code | Quantity | Price |
|---|---|---|---|
| Sublimed(>99.0% purity) | M2311A1 | 250 mg | £310 |
| Sublimed(>99.0% purity) | M2311A1 | 500 mg | £480 |
| Sublimed(>99.0% purity) | M2311A1 | 1 g | £800 |
MSDS Documentation
TSPBA MSDS sheetLiterature and Reviews
- Realizing 20% External Quantum Efficiency in Electroluminescence with Efficient Thermally Activated Delayed Fluorescence from an Exciplex, M. Chapran et al., ACS Appl. Mater. Interfaces, 11 (14), 13460–13471 (2019); DOI: 10.1021/acsami.8b18284.
- Molecular Design Strategies for Color Tuning of Blue TADF Emitters, P. Stachelek et al., ACS Appl. Mater. Interfaces, 11, 27125−27133 (2019); DOI: 10.1021/acsami.9b06364.
- Less Is More: Dilution Enhances Optical and Electrical Performance of a TADF Exciplex, M. Colella et al., J. Phys. Chem. Lett., 10, 793−798 (2019); DOI: 10.1021/acs.jpclett.8b0364.