Abstract
We investigated the carrier transport and recombination characteristics of single-layer organic light-emitting diodes (SLOLEDs) composed of a phenyldipyrenylphosphine oxide (POPy2) layer doped with orange fluorescent molecules of 2,5-bis-[{bis-(4-methoxy-phenyl)-amino}-styryl]-terephthalonitrile (BST). The SLOLEDs achieved a high external quantum efficiency of 1.6% and a high luminance of 24,000 cd/m2 at a low driving voltage of 8 V. These very good electroluminescence characteristics originate from factors that include our use of the following: (1) the ambipolar POPy2 layer, which can transport balanced amounts of electrons and holes, (2) a high BST-doping concentration that traps injected carriers on BST molecules, and (3) insertion of an undoped POPy2 layer next to a metallic cathode to prevent exciton quenching.
| Original language | English |
|---|---|
| Pages (from-to) | 4288-4292 |
| Number of pages | 5 |
| Journal | Thin Solid Films |
| Volume | 516 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Apr 30 2008 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Metals and Alloys
- Materials Chemistry
Cite this
Bright electroluminescence from single-layer organic light-emitting diodes comprising an ambipolar carrier transport layer of phenyldipyrenylphosphine oxide. / Matsusima, Toshinori; Adachi, Chihaya.
In: Thin Solid Films, Vol. 516, No. 12, 30.04.2008, p. 4288-4292.Research output: Contribution to journal › Letter
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TY - JOUR
T1 - Bright electroluminescence from single-layer organic light-emitting diodes comprising an ambipolar carrier transport layer of phenyldipyrenylphosphine oxide
AU - Matsusima, Toshinori
AU - Adachi, Chihaya
PY - 2008/4/30
Y1 - 2008/4/30
N2 - We investigated the carrier transport and recombination characteristics of single-layer organic light-emitting diodes (SLOLEDs) composed of a phenyldipyrenylphosphine oxide (POPy2) layer doped with orange fluorescent molecules of 2,5-bis-[{bis-(4-methoxy-phenyl)-amino}-styryl]-terephthalonitrile (BST). The SLOLEDs achieved a high external quantum efficiency of 1.6% and a high luminance of 24,000 cd/m2 at a low driving voltage of 8 V. These very good electroluminescence characteristics originate from factors that include our use of the following: (1) the ambipolar POPy2 layer, which can transport balanced amounts of electrons and holes, (2) a high BST-doping concentration that traps injected carriers on BST molecules, and (3) insertion of an undoped POPy2 layer next to a metallic cathode to prevent exciton quenching.
AB - We investigated the carrier transport and recombination characteristics of single-layer organic light-emitting diodes (SLOLEDs) composed of a phenyldipyrenylphosphine oxide (POPy2) layer doped with orange fluorescent molecules of 2,5-bis-[{bis-(4-methoxy-phenyl)-amino}-styryl]-terephthalonitrile (BST). The SLOLEDs achieved a high external quantum efficiency of 1.6% and a high luminance of 24,000 cd/m2 at a low driving voltage of 8 V. These very good electroluminescence characteristics originate from factors that include our use of the following: (1) the ambipolar POPy2 layer, which can transport balanced amounts of electrons and holes, (2) a high BST-doping concentration that traps injected carriers on BST molecules, and (3) insertion of an undoped POPy2 layer next to a metallic cathode to prevent exciton quenching.
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U2 - 10.1016/j.tsf.2007.09.038
DO - 10.1016/j.tsf.2007.09.038
M3 - Letter
AN - SCOPUS:40749145612
VL - 516
SP - 4288
EP - 4292
JO - Thin Solid Films
JF - Thin Solid Films
SN - 0040-6090
IS - 12
ER -