SimCP2, ambipolar phosphorescent host materials
Enhance the lifetime and colour purity of OLED devices with high luminance
SimCP2, 3,5-di(9H-carbazol-9-yl)tetraphenylsilane, contains four electron-donating carbazole groups with two mCP units (a well known host material) joined together by a diphenylsilane link. The mCP joined structure makes SimCP2 more robust to support the growth of high quality thin films, and it is also believed that the rigid structure can enhance the lifetime and colour purity of OLED devices with high luminance.
SimCP2 also possesses a wide triplet band gap (ET = 3.0 eV), high carrier mobility, ambipolar transport property and high glass transition temperature (Tg = 148 °C).
The solution processability of SimCP2 also gives it an advantage in device fabrication, where it can be used to enable higher device efficiency with homogeneous distribution of the host and guest in the emissive layer.
|Molecular weight||977.26 g/mol|
|Absorption*||λmax 338 nm (dichloromethane)|
|Photoluminescence||λem 362 nm (dichloromethane)|
|HOMO/LUMO||HOMO = 6.1 eV, LUMO = 2.5 eV; ET = 3.0 eV |
|Chemical name||Bis[3,5-di(9H -carbazol-9-yl)phenyl]diphenylsilane|
|Classification / Family||Triphenylamine derivatives, Phosphorescent host materials, Sublimed materials, Semiconducting small molecules|
|Purity||Sublimed >99.0% (HPLC)|
|Melting point||Tg = 148 °C (lit.)|
* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.
|Device structure||ITO/PEDOT:PSS (60 nm)/PVK+SimCP2 (70 wt.%)+OXD-7 (70 wt.%)+FIrpic(5 wt.%)(70 nm)/CsF/Al |
|Max. Current Efficiency||15.8 cd/A|
|Max. Power Efficiency||11 Im/W|
|Device structure||ITO (125 nm)/PEDOT:PSS (35 nm)/SimCP2:FIrpic (35 nm)/TPBi (28 nm)/LiF (0.8 nm)/Al (150 nm) |
|Max. Power Efficiency||24.2 Im/W|
|Sublimed (>99.0% purity)||M2291A1||100 mg||£200|
|Sublimed (>99.0% purity)||M2291A1||250 mg||£400|
|Sublimed (>99.0% purity)||M2291A1||500 mg||£680|
|Sublimed (>99.0% purity)||M2291A1||1 g||£1100|
Literature and Reviews
- High-Efficiency Blue Organic Light-Emitting Diode Using a 3,5-di(9H-carbazol-9-yl)tetraphenylsilane Host via Solution-Process, J. Mater. Chem., 20, 8411-8416 (2010); DOI: 10.1039/C0JM01163K.
- Efficiency enhancement of solution-processed single-layer blue-phosphorescence organic light-emitting devices having co-host materials of polymer (PVK) and small-molecule (SimCP2), S-W. Liu et al., J. SID 19 (4), 346-352 (2011); DOI: 10.1889/JSID19.4.346.
- Inkjet printing of blue phosphorescent light-emitting layer based on bis(3,5-di(9H-carbazol-9-yl))diphenylsilane, R. Bail et al., RSC Adv., 8, 11191 (2018); DOI: 10.1039/C8RA00582F.
- Spectroscopic and electrical characteristics of highly efficient tetraphenylsilane-carbazole organic compound as host material for blue organic light emitting diodes, T. Tsuboi et at., Org. Electron., 10(7), 1372–1377 (2009); DOI:10.1016/j.orgel.2009.07.020.
- Solution-processed bipolar small molecular host materials for single-layer blue phosphorescent organic light-emitting diodes, Y-T. Lee et al., J. Mater. Chem. C, 2, 382-391 (2014); DOI: 10.1039/c3tc31641f.
- A New Door for Molecular-Based Organic Light-Emitting Diodes, J-H. Jou et al., Proc. of SPIE 7051, 70510 (2008); DOI:10.1117/12.794184.
- Thermally Stable Charge Transport Materials for Vapor-Phase Fabrication of Perovskite Devices, C. Qiu et al., Adv. Photonics Res., 2, 2000140 (2021); DOI: 10.1002/adpr.202000140.
To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.