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中文摘要：
为了提高小分子有机太阳能电池电极对载流子的收集能力,并提高激子的分离效率,文章采用不同比例的Mg/Ca/Al合金及纯Al分别制备了结构为ITO/CuPc（20 nm）/C60∶CuPc（10 nm）/C60（30 nm）/BPhen（10nm）/Mg（x%）∶Ca∶Al（100 nm）和ITO/CuPc（20 nm）/C60∶CuPc（10 nm）/C60（30 nm）/BPhen（10 nm）/Al（100 nm）2种（共5组）有机光伏器件（OPV）,并对这5组有机光伏器件进行对比分析,以此来研究阴极材料组成对有机光伏器件性能的影响,并获得性能更优的有机光伏器件。研究结果表明,与纯Al阴极相比,Mg/Ca/Al合金阴极可以提高电极对载流子的收集效率,有助于提高有机光伏器件的光电转换效率,并且当合金阴极中Mg的质量分数为20%时,有机光伏器件性能最优,在光功率密度为100 m W/cm2的模拟光源AM1.5G照射下,该有机光伏器件的开路电压为0.34 V,短路电流密度为6.90 m A/cm2,光电转换效率为0.91%,光电转换效率比同结构纯Al阴极器件提高了88.24%。
英文摘要：
In order to improve the carrier collection characteristics of small molecule organic photovoltaic cells （OPV）, five OPV devices are fabricated by using Mg/Ca/Al alloy and pure Al as cathode and investigated the influences of cathode material on devices. The device structures are as follows ： ITO/CuPc （20 nm）/C60：CuPc （10 nm）/C60（30nm）/BPhen （ 10 nm）/Mg （x%） ：Ca：Al （ 100 nm） and ITO/CuPc（20 nm）/C60：CuPc（10 nm）/C6o（30 nm）/BPhen（10 nm）/Al（100 nm）. The results show that the OPV devices with Mg mass fraction of 20% alloy cathode will get higher short-current, open-circuit voltage and better performance.The cell parameters have been measured as JSC=6.90 mA/cm2, VOC= 0.34 V, and FF=0.41. Power efficiency of this small molecule organic photovohaic cells can reach approximately over 0.91% under the illumination of AM1.5G, 100 mW/cm2.
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