Abstract
Deep blue emitters are highly desired and intensively investigated for organic light emitting diodes for high quality full color display or solid state lighting applications. Here a new strategy for deep blue phosphorescent emission is demonstrated through the incorporaiton of 6-membered metal chelation rings in the tetradentate metal complex molecular structure. The platinum metal complex PtNON was synthesized and fully characterized. The emission spectra of PtNON shows a deep blue emission peaking at 438 nm at 77 K and a red-shifted, broadened, and structureless emission band centered at 508 nm at room temperature. The photoluminescent quantum yield of PtNON reaches a high value of 83%, and its luminescent lifetime remains as short as 3.76 μs in a 5% doped PMMA thin film. Organic light emitting diodes devices with PtNON as an emissive material were fabricated, achieving a peak device efficiency of 24.4% in a device structure designed for charge confinement. Furthermore, device architectures using known stable components with PtNON demonstrated an operational lifetime to 70% initial luminance estimated at over 30 000 h at 100 cd/m2 while also retaining moderate efficiencies over 10% despite the high triplet energy over 2.8 eV for the emitter.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3276-3282 |
| Number of pages | 7 |
| Journal | Chemistry of Materials |
| Volume | 28 |
| Issue number | 10 |
| DOIs | |
| State | Published - May 24 2016 |
Fingerprint
ASJC Scopus subject areas
- Materials Chemistry
- Chemical Engineering(all)
- Chemistry(all)
Cite this
Tetradentate Pt(II) Complexes with 6-Membered Chelate Rings : A New Route for Stable and Efficient Blue Organic Light Emitting Diodes. / Fleetham, Tyler B.; Huang, Liang; Klimes, Kody; Brooks, Jason; Li, Jian.
In: Chemistry of Materials, Vol. 28, No. 10, 24.05.2016, p. 3276-3282.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Tetradentate Pt(II) Complexes with 6-Membered Chelate Rings
T2 - A New Route for Stable and Efficient Blue Organic Light Emitting Diodes
AU - Fleetham, Tyler B.
AU - Huang, Liang
AU - Klimes, Kody
AU - Brooks, Jason
AU - Li, Jian
PY - 2016/5/24
Y1 - 2016/5/24
N2 - Deep blue emitters are highly desired and intensively investigated for organic light emitting diodes for high quality full color display or solid state lighting applications. Here a new strategy for deep blue phosphorescent emission is demonstrated through the incorporaiton of 6-membered metal chelation rings in the tetradentate metal complex molecular structure. The platinum metal complex PtNON was synthesized and fully characterized. The emission spectra of PtNON shows a deep blue emission peaking at 438 nm at 77 K and a red-shifted, broadened, and structureless emission band centered at 508 nm at room temperature. The photoluminescent quantum yield of PtNON reaches a high value of 83%, and its luminescent lifetime remains as short as 3.76 μs in a 5% doped PMMA thin film. Organic light emitting diodes devices with PtNON as an emissive material were fabricated, achieving a peak device efficiency of 24.4% in a device structure designed for charge confinement. Furthermore, device architectures using known stable components with PtNON demonstrated an operational lifetime to 70% initial luminance estimated at over 30 000 h at 100 cd/m2 while also retaining moderate efficiencies over 10% despite the high triplet energy over 2.8 eV for the emitter.
AB - Deep blue emitters are highly desired and intensively investigated for organic light emitting diodes for high quality full color display or solid state lighting applications. Here a new strategy for deep blue phosphorescent emission is demonstrated through the incorporaiton of 6-membered metal chelation rings in the tetradentate metal complex molecular structure. The platinum metal complex PtNON was synthesized and fully characterized. The emission spectra of PtNON shows a deep blue emission peaking at 438 nm at 77 K and a red-shifted, broadened, and structureless emission band centered at 508 nm at room temperature. The photoluminescent quantum yield of PtNON reaches a high value of 83%, and its luminescent lifetime remains as short as 3.76 μs in a 5% doped PMMA thin film. Organic light emitting diodes devices with PtNON as an emissive material were fabricated, achieving a peak device efficiency of 24.4% in a device structure designed for charge confinement. Furthermore, device architectures using known stable components with PtNON demonstrated an operational lifetime to 70% initial luminance estimated at over 30 000 h at 100 cd/m2 while also retaining moderate efficiencies over 10% despite the high triplet energy over 2.8 eV for the emitter.
UR - http://www.scopus.com/inward/record.url?scp=84973098870&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84973098870&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.5b04957
DO - 10.1021/acs.chemmater.5b04957
M3 - Article
AN - SCOPUS:84973098870
VL - 28
SP - 3276
EP - 3282
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 10
ER -