ZnO/MEH-PPV有机-无机复合器件的光电导特性  

The Properties of ZnO/MEH-PPV Organic-Inorganic Hybrid Devices

作　　者：苏艳梅[1] 侯延冰[1] 徐征[1] 陈晓红[1] 刘峻峰[1] 靳辉[1] 

机构地区：[1]北方交通大学光电子技术研究所

出　　处：《光电子．激光》2002年第7期664-666,共3页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目 ( 6 99770 0 1;199740 0 2 )

摘　　要：我们制做 ITO/ MEH- PPV/ Al及 ITO/ Zn O/ MEH- PPV/ Al类型的器件 ,研究了其光电导特性。发现同样测试条件下 ,有 Zn O的器件光电流大于没有 Zn O的器件 ,且随着 Zn O厚度的增加 ,光电流增加。Zn O在其中的主要作用是促进器件中激子的解离 ,并有助于电荷的运动。In order to improve the efficiency of polymer photodiodes,ZnO thin film was introduced into the polymer photodiode.Two types of devices were made,ITO/MEH-PPV/Al and ITO/ZnO/MEH-PPV/Al.The thickness of ZnO film was changed in the range of 3 nm and 6 nm.The photoconductivity of these devices was measured.We found that the photocurrent of the device without ZnO is smaller than that one with ZnO,and it increases with the increase of the thickness of ZnO.We compared the absorption spectra of ZnO and that of MEH-PPV,and found that the absorption peak of MEH-PPV was consistent with the peak of the photocurrent-wavelength curve.The results suggest that the carriers were produced in the MEH-PPV and the ZnO film facilitates the dissociation of the exciton and enhances the transportation of the carriers.

关 键 词：有机-无机复合 光电导 ZNO MEH-PPV 光电流 

分 类 号：TN383[电子电信—物理电子学] TN204