Abstract
We investigated the current injection, transport, and luminous efficiency behavior of organic light emitting diode (OLED) containing the 5-10 nm-sized gold particles mixed in the polyfluorene-type copolymer. This nanoparticle-conjugated polymer mixture layer was used as hole injection, transport, and light emitting layer for various structures of OLED based on the phosphorescent and fluorescent emitters. Due to the hole trapping at the nanopaticle, carrier injection is significantly reduced while the hole transport behavior is found to be barely affected. Hole trapping of nanoparticle in light emitting layer (at 4.7∼9.4x 10 -5 w/w fraction) resulted in an enhancement of efficiency (from 5.23 cd/A to 6.50 cd/A). The existence of the outcoupling effect also supports the carrier trapping behavior, which is amended mechanism of the improved efficiency compared to previously reported mechanism of enhanced photoluminescent stability by a hindrance of photo-oxidation.
| Original language | English |
|---|---|
| Pages (from-to) | 7451-7455 |
| Number of pages | 5 |
| Journal | Journal of Nanoscience and Nanotechnology |
| Volume | 9 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2009 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Bioengineering
- Chemistry(all)
- Biomedical Engineering
- Materials Science(all)
- Condensed Matter Physics
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Charge carrier trapping and enhanced electroluminescent efficiency of blue light emitting polymer with gold nanoparticles. / Park, Jong Hyeok; Choi, Yu Ri; Chin, Byung Doo.
In: Journal of Nanoscience and Nanotechnology, Vol. 9, No. 12, 01.12.2009, p. 7451-7455.Research output: Contribution to journal › Article
TY - JOUR
T1 - Charge carrier trapping and enhanced electroluminescent efficiency of blue light emitting polymer with gold nanoparticles
AU - Park, Jong Hyeok
AU - Choi, Yu Ri
AU - Chin, Byung Doo
PY - 2009/12/1
Y1 - 2009/12/1
N2 - We investigated the current injection, transport, and luminous efficiency behavior of organic light emitting diode (OLED) containing the 5-10 nm-sized gold particles mixed in the polyfluorene-type copolymer. This nanoparticle-conjugated polymer mixture layer was used as hole injection, transport, and light emitting layer for various structures of OLED based on the phosphorescent and fluorescent emitters. Due to the hole trapping at the nanopaticle, carrier injection is significantly reduced while the hole transport behavior is found to be barely affected. Hole trapping of nanoparticle in light emitting layer (at 4.7∼9.4x 10 -5 w/w fraction) resulted in an enhancement of efficiency (from 5.23 cd/A to 6.50 cd/A). The existence of the outcoupling effect also supports the carrier trapping behavior, which is amended mechanism of the improved efficiency compared to previously reported mechanism of enhanced photoluminescent stability by a hindrance of photo-oxidation.
AB - We investigated the current injection, transport, and luminous efficiency behavior of organic light emitting diode (OLED) containing the 5-10 nm-sized gold particles mixed in the polyfluorene-type copolymer. This nanoparticle-conjugated polymer mixture layer was used as hole injection, transport, and light emitting layer for various structures of OLED based on the phosphorescent and fluorescent emitters. Due to the hole trapping at the nanopaticle, carrier injection is significantly reduced while the hole transport behavior is found to be barely affected. Hole trapping of nanoparticle in light emitting layer (at 4.7∼9.4x 10 -5 w/w fraction) resulted in an enhancement of efficiency (from 5.23 cd/A to 6.50 cd/A). The existence of the outcoupling effect also supports the carrier trapping behavior, which is amended mechanism of the improved efficiency compared to previously reported mechanism of enhanced photoluminescent stability by a hindrance of photo-oxidation.
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U2 - 10.1166/jnn.2009.1778
DO - 10.1166/jnn.2009.1778
M3 - Article
VL - 9
SP - 7451
EP - 7455
JO - Journal of Nanoscience and Nanotechnology
JF - Journal of Nanoscience and Nanotechnology
SN - 1533-4880
IS - 12
ER -