용해성이 우수하며, 강한 electron-withdrawing 특성을 나타내는 cyano group 을 가지는, 새로운 전자acceptor 재료인 malononitrile 유도체 (2-(2,6-bis((E)-4-tert-butylstyryl)-4H-pyran-4-ylid-ene)malononitrile (t-BuPM)을 합성하였다. 합성된 acceptor 재료 t-BuPM을 donor와 acceptor 재료로 널리 사용되고 있는 poly[2-Methoxy-5-(2-EthylHexyloxy)-P-Phenylene-Vinylene](MEH-PPV)와 (6)-1-(3-(methoxycarbonyl)propyl)-{5}-1-1-phenyl-[5,6]-fullerene (PCBM)과 함께ternary blend system으로 유기 태양전지 소자를 제작하였다. 소자는 ITO/PEDOT:PSS/MEH-PPV:t-BuPM:PCBM/Al 구조와 같이 제작하여 광전변환 특성을 측정하였다. 합성된 재료의 HOMO와LUMO energy level은 -5.97,-3.49eV로 측정되었으며, t-BuPM을 사용하여 ternary blend system 으로 제작된소자의 에너지변환 효율은 AM 1.5G, 1 sun 조건(100mA/cm2)에서 1.85%로 측정되었다. Short circuit current density (Jsc)는 5.54mA/cm2, fillfactor(FF)는 41%, open circuit voltage(Voc)는 0.80 V로 측정되었다.
We reported a novel malononitrile derivatives (2-(2,6-bis((E)-4-tert-butylstyryl)-4Hpyran-
4-ylid-ene) malononitrile (t-BuPM) combines good solubility,cyano group which have strong electron-withdrawing ability. Blends ofMEH-PPV, t-BuPM and PCBM fabricated the organic solar cell device. We also fabricated device such as ITO/MEH-PPV:t-BuPM:PCBM/Al. We measured photovoltaic properties by the variation of blending materials. The HOMO and LUMO energy level of t-BuPM, estimated from cyclic voltammograms, were -5.97,-3.49 eV. The power conversion efficiency that is fabricated by ternary blend system using t-BuPM was measured 1.85 %. It was shown that the short circuit current density (Isc) of 5.54mA/cm2, fillfactor(FF) of 41%, open circuit voltage(Voc) of 0.80V, underAm1.5Gand1suncondition(100mA/cm2).