Abstract
In this study, the efficiency of organic light-emitting diodes (OLEDs) was enhanced by depositing a CeF3 film as an ultra-thin buffer layer between the ITO and NPB hole transport layer, with the structure configuration ITO/CeF3 (1 nm)/NPB (40 nm)/Alq3 (60 nm)/LiF (1 nm)/Al (150 nm). The enhancement mechanism was systematically investigated via several approaches. The work function increased from 4.8 eV (standard ITO electrode) to 5.2 eV (1-nm-thick UV-ozone treated CeF3 film deposited on the ITO electrode). The turn-on voltage decreased from 4.2 V to 4.0 V at 1 mA/cm2, the luminance increased from 7588 cd/m2 to 10820 cd/m2, and the current efficiency increased from 3.2 cd/A to 3.5 cd/A when the 1-nm-thick UV-ozone treated CeF3 film was inserted into the OLEDs.
| Original language | English |
|---|---|
| Title of host publication | Organic Light Emitting Materials and Devices XX |
| Editors | Franky So, Chihaya Adachi, Jang-Joo Kim |
| Publisher | SPIE |
| ISBN (Electronic) | 9781510602731 |
| DOIs | |
| Publication status | Published - 2016 Jan 1 |
| Event | Organic Light Emitting Materials and Devices XX - San Diego, United States Duration: 2016 Aug 28 → 2016 Aug 30 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 9941 |
| ISSN (Print) | 0277-786X |
| ISSN (Electronic) | 1996-756X |
Other
| Other | Organic Light Emitting Materials and Devices XX |
|---|---|
| Country | United States |
| City | San Diego |
| Period | 16-08-28 → 16-08-30 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
Cite this
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Improved hole-injection and power efficiency of organic light-emitting diodes using an ultrathin cerium fluoride buffer layer. / Lu, Hsin Wei; Kao, Po Ching; Chu, Sheng-Yuan.
Organic Light Emitting Materials and Devices XX. ed. / Franky So; Chihaya Adachi; Jang-Joo Kim. SPIE, 2016. 994124 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9941).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Improved hole-injection and power efficiency of organic light-emitting diodes using an ultrathin cerium fluoride buffer layer
AU - Lu, Hsin Wei
AU - Kao, Po Ching
AU - Chu, Sheng-Yuan
PY - 2016/1/1
Y1 - 2016/1/1
N2 - In this study, the efficiency of organic light-emitting diodes (OLEDs) was enhanced by depositing a CeF3 film as an ultra-thin buffer layer between the ITO and NPB hole transport layer, with the structure configuration ITO/CeF3 (1 nm)/NPB (40 nm)/Alq3 (60 nm)/LiF (1 nm)/Al (150 nm). The enhancement mechanism was systematically investigated via several approaches. The work function increased from 4.8 eV (standard ITO electrode) to 5.2 eV (1-nm-thick UV-ozone treated CeF3 film deposited on the ITO electrode). The turn-on voltage decreased from 4.2 V to 4.0 V at 1 mA/cm2, the luminance increased from 7588 cd/m2 to 10820 cd/m2, and the current efficiency increased from 3.2 cd/A to 3.5 cd/A when the 1-nm-thick UV-ozone treated CeF3 film was inserted into the OLEDs.
AB - In this study, the efficiency of organic light-emitting diodes (OLEDs) was enhanced by depositing a CeF3 film as an ultra-thin buffer layer between the ITO and NPB hole transport layer, with the structure configuration ITO/CeF3 (1 nm)/NPB (40 nm)/Alq3 (60 nm)/LiF (1 nm)/Al (150 nm). The enhancement mechanism was systematically investigated via several approaches. The work function increased from 4.8 eV (standard ITO electrode) to 5.2 eV (1-nm-thick UV-ozone treated CeF3 film deposited on the ITO electrode). The turn-on voltage decreased from 4.2 V to 4.0 V at 1 mA/cm2, the luminance increased from 7588 cd/m2 to 10820 cd/m2, and the current efficiency increased from 3.2 cd/A to 3.5 cd/A when the 1-nm-thick UV-ozone treated CeF3 film was inserted into the OLEDs.
UR - http://www.scopus.com/inward/record.url?scp=85006841287&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85006841287&partnerID=8YFLogxK
U2 - 10.1117/12.2237242
DO - 10.1117/12.2237242
M3 - Conference contribution
AN - SCOPUS:85006841287
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Organic Light Emitting Materials and Devices XX
A2 - So, Franky
A2 - Adachi, Chihaya
A2 - Kim, Jang-Joo
PB - SPIE
ER -