Seo Ji Hoon, Koo Ja-Ryong, Lee Seok Jae, Seo Bo Min, Kim Young Kwan
Department of Information Display, Hongik University, Seoul, 121-791, Korea.
J Nanosci Nanotechnol. 2011 Aug;11(8):7307-10. doi: 10.1166/jnn.2011.4793.
We have demonstrated the poly(3-hexyl-thiophene-1,5-diyl) (P3HT):[6,6]-phenyl C61-butyric acid methyl ester (PCBM) bulk heterojunction (BHJ) organic photovoltaic (OPV) devices on various poly(3,4-ethylene-dioxythiophene):poly(styrenesulfonate) (PEDOT:PSSs). The device with PEDOT:PSS of PH 500 adding 1% dimethyl sulfoxide (DMSO) showed the best performances in term of the fill factor and power conversion efficiency (PCE) than others. The hole extraction ability of PEDOT:PSS is very important to balance between holes and electrons mobility because the carrier mobility of PCBM (approximately 10(-4) cm2/Vs) is higher than that of P3HT (approximately 10(-6) cm2/Vs) in P3HT:PCBM BHJ structure. The optimized BHJ OPV with PEDOT:PSS of PH 500 adding 1% DMSO showed a short-circuit current density of 8.92 mA/cm2 and a PCE of 2.97%, which was nearly increased to 2.5 times than that of control device with PEDOT:PSS of P VP Al 4083.
我们已经在各种聚（3,4 - 亚乙基二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）上展示了聚（3 - 己基噻吩 - 1,5 - 二基）（P3HT）：[6,6] - 苯基C61 - 丁酸甲酯（PCBM）体异质结（BHJ）有机光伏（OPV）器件。在填充因子和功率转换效率（PCE）方面，添加1％二甲基亚砜（DMSO）的PH 500的PEDOT：PSS器件表现优于其他器件。在P3HT：PCBM BHJ结构中，由于PCBM的载流子迁移率（约10^(-4) cm2 / Vs）高于P3HT的载流子迁移率（约10^(-6) cm2 / Vs），PEDOT：PSS的空穴提取能力对于平衡空穴和电子迁移率非常重要。添加1％DMSO的PH 500的PEDOT：PSS优化后的BHJ OPV显示出8.92 mA/cm2的短路电流密度和2.97％的PCE，这几乎是使用P VP Al 4083的PEDOT：PSS的对照器件的2.5倍。
