UGH3

UGH3, 1,3-bis(triphenylsilyl)benzene, is an isomer to UGH-2, 1,4-bis(triphenylsilyl)benzene.

UGH3 is an ultrahigh energy gap (4.40 eV) organosilicon compounds and a weak electron-transport-type host for highly efficient blue PHOLEDs. UGH3 has a high triplet energy (E_T=3.1 eV) and can also be used as a host material to dilute exciplex to enhance TADF-OLED optical and electrical device performance. Having a deep HOMO energy level (7.2 eV), UGH3 can also be used as an effective hole blocking layer material.

Both UGH2 and UGH3 have low glass transition temperatures (T_g) below 100 °C, BSB, 4,4'-di(triphenylsilyl)-biphenyl, however, offers better morphology of OLED device films for higher device performance and stability with higher T_g at 100 °C.

General Information

Product Details

*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the sublimed materials for OLED devices page.

Chemical Structure

Device Structure(s)

Device structure	ITO (70 nm)/NPB (40 nm)/mCP (7.5 nm)/UGH3:FIrpic:Bt2Ir(acac) (14%, 0.3%) (30 nm)/UGH3 (5 nm)/Bphen (50 nm)/LiF (1 nm)/Al (120 nm) [2]
Colour	White
Max. Current Efficiency	47.5 cd/A
Max. EQE	18.9 %
Max. Power Efficiency	36.6 Im/W

Device structure	ITO (70 nm)/NPB (40 nm)/mCP (7.5 nm)/UGH3:mCP (7:3):14 wt%FIrpic:0.3 wt% Bt2Ir(acac) (30 nm)/UGH3 (5 nm)/Bphen (50 nm)/LiF (1 nm)/Al (120 nm) [2]
Colour	White
Max. Current Efficiency	47.6 cd/A
Max. EQE	18.9 %
Max. Power Efficiency	40.9 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

MSDS Documentation

UGH3 MSDS sheet

Literature and Reviews

1. Arylsilanes and siloxanes as optoelectronic materials for organic light-emitting diodes (OLEDs), D. Sun et al., J. Mater. Chem. C, 3, 9496-9508 (2015); DOI: 10.1039/C5TC01638J.
2. Improved Performance of White Phosphorescent Organic Light-Emitting Diodes through a Mixed-Host Structure, ETRI. J., 31 (6), 642-646 (2009); J. Lee et al., DOI: 10.4218/etrij.09.1209.0005.
3. 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.8b03646.
4. Ultrahigh Energy Gap Hosts in Deep Blue Organic Electrophosphorescent Devices, X. Ren et al., Chem. Mater., 16, 23, 4743–4747 (2004); DOI: 10.1021/cm049402m.
5. Identifying the Factors That Lead to PLQY Enhancement in Diluted TADF Exciplexes Based on Carbazole Donors, M. Colella et al., J. Phys. Chem. C, 123 (28); DOI: 10.1021/acs.jpcc.9b03538.
6. Enhanced efficiency and reduced roll-off in blue and white phosphorescent organic light-emitting diodes with a mixed host structure, J. Lee et al., Appl. Phys. Lett. 94, 193305 (2009); DOI: 10.1063/1.3136861.

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.