DTAF

DTAF, HTL and EBL material for OLED devices

Paired with PO-T2T to generate yellow emission

DTAF, or 9,9-di[4-(di-p-tolyl)aminophenyl]fluorine, has a fluorine centred structure with two N,N-bis(p-tolyl))benzenamine attached to the fluorine. DTAF is electron rich, so is normally used as a hole transporting layer or electron blocking layer (with a LUMO of 1.84 eV) in OLED devices.

DTAF can also form exciplexes with other electron deficient materials, such as PO-T2T, generating yellow exciplex emission. Parallel all exciplex based white-light OLED (WOLED) blend layers of mCP/PO-T2T and DTAF/PO-T2T demonstrates excellent maximum current and power efficiencies (27.7 cd/A and 15.8 ml/W respectively) with CIE(0.29, 0.35) and CRI 70.6 [1].

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

Device structure	ITO/PEDOT:PSS (30 nm)/TPAC (20 nm)/mCP (15 nm)/mCP:PO-T2T (1:1, 20 nm)/PO-T2T (45 nm)/Liq (1 nm)/Al (1 nm)/MoO3(5 nm)/DTAF (20 nm)/DTAF:PO-T2T (1:1, 20 nm)/PO-T2T(50 nm)/Liq (0.5 nm)/Al (100 nm). [1]
Colour	White
Max. Current Efficiency	27.7 cd/A
Max. EQE	11.6 %
Max. Power Efficiency	15.8 Im/W

Device structure	ITO/PEDOT:PSS (30 nm)/DTAF (25 nm)/12 wt% FIrpic:CNBzIm (25 nm)/TPBI (50 nm)/LiF (0.5 nm)/Al (100 nm) [2]
Colour	Blue
Max. Current Efficiency	29.0 cd/A
Max. EQE	12.7%
Max. Power Efficiency	30.5 Im/W

Device structure	ITO/PEDOT:PSS (30 nm)/DTAF (25 nm)/10 wt%(PPy)2Ir(acac):CNBzIm (25 nm)/TPBI (50 nm)/LiF (0.5 nm)/Al (100 nm) [2]
Colour	Green
Max. Current Efficiency	66.8 cd/A
Max. EQE	17.8%
Max. Power Efficiency	59.4 Im/W

Device structure	ITO/PEDOT:PSS (30 nm)/DTAF (25 nm)/10 wt% Os(bpftz)2(PPh2Me)2:CNBzIm (25 nm)/TPBI (50 nm)/LiF (0.5 nm)/Al (100 nm) [2]
Colour	Red
Max. Current Efficiency	33.8 cd/A
Max. EQE	19.1%
Max. Power Efficiency	27 Im/W

Device structure	ITO/PEDOT:PSS (30 nm)/DTAF (25 nm)/12 wt% FIrpic:0.3 wt% Os(bpftz)2(PPh2Me)2:CNBzIm (25 nm)/TPBI (50 nm)/LiF (0.5 nm)/Al (100 nm) [2]
Colour	White
Max. Current Efficiency	35.0 cd/A
Max. EQE	15.7%
Max. Power Efficiency	36.6 Im/W

Device structure	ITO/PEDOT:PSS (30 nm)/DTAF (25 nm)/10 wt% (pbi)2Ir(acac):CPhBzIm (25 nm)/TPBI (50 nm)/LiF (0.5 nm)/Al (100 nm) [3]
Colour	Greenish-Yellow
Max. Current Efficiency	62.0 cd/A
Max. EQE	19.2%
Max. Power Efficiency	62.0 Im/W

Pricing

MSDS Documentation

DTAF MSDS sheet

Literature and Reviews

1. The First Tandem, All-exciplex-based WOLED, W. Huang et al., Sci. Report, 4, 5161 (2014); DOI: 10.1038/srep05161.
2. A carbazole–phenylbenzimidazole hybrid bipolar universal host for high efficiency RGB and white PhOLEDs with high chromatic stability, W. Hung et al., J. Mater. Chem., 21, 19249 (2011); DOI: 10.1039/c1jm14029a.
3. A new benzimidazole/carbazole hybrid bipolar material for highly efficient deep-blue electrofluorescence, yellow–green electrophosphorescence, and two-color-based white OLEDs, W. Hung et al., J. Mater. Chem., 20, 10113–10119 (2010); DOI: 10.1039/c0jm02143a.
4. Exciplex: An Intermolecular Charge-Transfer Approach for TADF, M. Sarma et al., ACS Appl. Mater. Interfaces, 10 (23), 19279–19304 (2018); DOI: 10.1021/acsami.7b18318..

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. 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, and may not be used for any other purpose including health care, military, pharmaceuticals, cosmetics, food, or commercial applications.