| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 봄 (04/07 ~ 04/08, 대전컨벤션센터) |
| 권호 |
36권 1호 |
| 발표분야 |
스마트 필름 |
| 제목 |
Combination of Titanium Oxide-Conjugated Polyelectrolyte for High-Performance Inverted-Type Organic Optoelectronic Devices |
| 초록 |
We demonstrate the remarkable improvement in device performances of inverted polymer solar cells (iPSCs) and polymer light-emitting diodes (iPLEDs) by employing a combination of titanium oxide (TiOx) and conjugated polyelectrolyte (CPE) as an electron injection/transporting layer. For iPSCs, the CPE layer increased the power conversion efficiency from 2.65 % to 3.55 % by enhancements of the short circuit current and fill factor. For iPLEDs, the device with CPE layer exhibits increased luminance efficiency from 4.3 cd/A to 18.0 cd/A and maximum luminance from 1850 cd/m2 to 25800 cd/m2, and reduced turn-on voltage from 4.4 V to 3.8 V. These high efficiencies of inverted-type organic optoelectronic devices are attributed to spontaneously oriented interfacial dipoles within the CPE layer, which lower the energy barrier for electron injection/transport and reduce the interfacial contact resistance and inherent incompatibility between the hydrophilic TiOx and hydrophobic active layers. |
| 저자 |
최효성1, 박지선2, 정은재3, 김기환1, 이보람1, 김상욱2, 송명훈1, 우한영3, 김진영1
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| 소속 |
1울산과학기술대, 2KAIST, 3부산대 |
| 키워드 |
Inverted structure; organic optoelectronic devices; conjugated polyelectrolyte; metal oxides
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| E-Mail |
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