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| Type |
Poster Presentation |
| Area |
유기화학 |
| Room No. |
포스터발표장 |
| Time |
4월 20일 (목요일) 11:00~12:30 |
| Code |
ORGN.P-233 |
| Subject |
IONIC INTERLAYER FOR IMPROVED ELECTRON EXTRACTION IN POLYMER SOLAR CELLS |
| Authors |
이민수, 권태혁1,*
UNIST 화학과, Korea
1UNIST 친환경에너지 공학부, Korea
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| Abstract |
In organic photovoltaics (OPV), interfacial layer are forming a greater part. Electric contact between the active layer and the electrodes largely affect all device-related parameters (JSC, VOC ,and FF) and modification of those interfaces by introducing interfacial layers can change the contact properties to improve the PCE of OPVs. Our team design and inserting new ionic interfacial layer and study the mechanism.
We present three Ir-complexes, which has different mobile ions; Li, Na, and K, designed as ionic interlayer. Depending on ions, especially for ionic mobility trend, performances of the devices are dramatically changed in both conventional and inverted structure. Ionic interfacial layer, which has faster ionic mobility, have much higher Power Conversion Efficiency (PCE) than others because of Electric Double Layer (EDL) formation on the interface. Formed EDL helps electron extraction and enhance the JSC and PCE.
In this study, we showed the importance of ionic mobility of the interfacial layer materials in electron extraction. Ultraviolet Photoelectron Spectroscopy (UPS) and Conductive Atomic Force Microscope (c-AFM) were applied to analysis the electric double layer formation and effect.
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| E-mail |
leeminsoo45@gmail.com |
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119th General Meeting of the KCS