Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
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Electrical and optical characterizations of OSCs based on polymer/fullerene BHJ structures with LiF inter-layer

Polymer/fullerene/LiF inter-layer BHJ 유기태양전지의 광학 및 전기적 특성에 대한 연구

  • Song, Yoon-Seog (Department of Electronics Engineering, Dankook University) ;
  • Kim, Seung-Ju (Department of Electronics Engineering, Dankook University) ;
  • Ryu, S.O. (Department of Electronics Engineering, Dankook University)
  • 송윤석 (단국대학교 전자공학과) ;
  • 김승주 (단국대학교 전자공학과) ;
  • 류상욱 (단국대학교 전자공학과)
  • Received : 2011.01.14
  • Accepted : 2011.02.28
  • Published : 2011.03.31
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Abstract

In this study, we have investigated the power conversion efficiency of organic solar cells utilizing conjugated polymer/fullerene bulk-hetero junction(BHJ) device structures. We have fabricated poly(3-hexylthiophene)(P3HT), poly[2methoxy-5-(3',7'-dimethyloctyl-oxy)-1-4-phenylenevinylene] as an electron donor, [6,6]-phenyl $C_{61}$ butyric acid methylester(PCBM-$C_{61}$)as an electron acceptor, and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT:PSS) used as a hole injection layer(HIL), after fabricated active layer, between active layer and metal cathode(Al) deposited LiF interlayer(5 nm). The properties of fabricated organic solar cell(OSC) devices have been analyzed as a function of different thickness. The electrical characteristics of the fabricated devices were investigated by means J-V, fill factor(FF) and power conversion efficiency(PCE). We observed the highest PCEs of 0.628%(MDMO-PPV:PCBM-$C_{61}$) and 2.3%(P3HT:PCBM-$C_{61}$) with LiF inter-layer at the highest thick active layer, which is 1.3times better than the device without LiF inter-layer.

Keywords

References

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