Island 표면구조의 P(VDF-TrFE) 몰드를 임프린트한Spike 형태의 고투과성 외부광추출 필름
Spike type high-transmittance external light extraction film imprinted with P(VDF-TrFE) mold with island surface structure
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초록
본 연구에서는 열처리 후 Island 표면 구조를 가지는 고분자 Poly(vinylidenefluoride-co-trifluoroethylene) [P(VDF-TrFE)]를 사용하여 유기 발광 다이오드의 광추출 효율을 향상시키기 위한 방법을 제시하였다. Island 구조의 P(VDF-TrFE) 표면위에 임프린트한 polydimethylsiloxane (PDMS)는 Spike 구조를 띄고 이를 통해 전류 및 외부양자 효율을 약 20%을 향상시켰다. 제작된 필름은 8.2의 낮은 Haze특성을 보이며, 93.4% 우수한 투과도 특성으로 인해 Pixel blur 없이 광효율을 향상시킬수 있음을 확인하였다.
Abstract
In this study, a method for improving the light extraction efficiency of organic light emitting diodes was presentedusing the polymer Poly(vinylidenefluoride-co-trifluoroethylene) [P(VDF-TrFE)] having an island surface structure afterannealing. Polydimethylsiloxane (PDMS) imprinted on the island-structured P(VDF-TrFE) surface has a spike structure,which improves the external light extraction efficiency aroud 20%. It was confirmed that the produced film showed a lowhaze characteristic of 8.2, and the Current and external quantum efficiency could be improved without pixel blur due tothe excellent transmittance of 93.4%.
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