基于PIN结构的Rubrene／C70太阳能电池的性能研究  

Performance of Rubrene/C_(70)based organic solar cells with PIN structure

作　　者：吴步军[1] 刘彭义[1] 谢伟广[1] 詹真[1] 余笑梅 

机构地区：[1]暨南大学物理系,暨南大学思源实验室,广东广州510632

出　　处：《光电子．激光》2014年第1期46-50,共5页Journal of Optoelectronics·Laser

基　　金：广东省自然科学基金(S2011010002575);华南理工大学发光材料与器件国家重点实验室开放基金资助项目

摘　　要：实验制备了ITO/V2O5/Rubrene/C70:Rubrene/C70/BCP/Al的PIN结构有机太阳能电池(OSC),其中Rubrene、Rubrene:C70和C70分别作为P、I和N层。通过改变I层厚度,研究了I层对OSC性能的影响及作用机理。实验显示,I层厚为5nm时器件的功率转换效率η达到最大值为1.580%,同时获得了较大的短路电流密度Jsc为4.365mA·cm-2;相对PN结构器件,功率转化效率η短路电流密度Jsc和填充因子FF分别提高了40.3%、29.7%和8.2%。我们认为,I层中激子分离效率的提高导致了器件性能的改善。PIN organic solar cells with the structure of ITO/V2O5/rubrene/C70：rub rene/C70/BCP/Al were fabricated,using rubrene,rubrene and C70 mixi ng layer,and C70 as P,I and N layers,respectively.The thickness effect of the mixing layer on the performance of the cells is reveale d,indicating that the optimized device performance is obtained at thickness of 5nm.The power conversion efficie ncy of the optimized cell is as high as 1.58% and the short-circuit current is up to 4.365mA·cm^-2,which ar e 140.3% and 129.7% more than those of the PN device.We suggest that the insertion of the I layer increa ses the separation ratio of the excitons,leading to the enhancement of th e device performance.

关 键 词：有机太阳能电池(OSC) PIN RUBRENE C70 功率转换效率 

分 类 号：TM914.4[电气工程—电力电子与电力传动]