稀土有机光伏器件  

Organic Film Photovoltaic Cell with Rear-earth Complex

作　　者：范镝[1] 初蓓[1] 李文连[1] 洪自若[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所激发态物理重点实验室

出　　处：《发光学报》2003年第2期208-210,共3页Chinese Journal of Luminescence

摘　　要：采用真空气相沉积法制备了结构为ITO/TPD/Gd(DBM)3bath/Mg∶Ag的双层结构有机光伏器件,其中,TPD为受体,Gd(DBM)3bath为给体。在4mW/cm2的365nm波长紫外光从ITO玻璃方向垂直照射下,器件的开路电压Voc,短路电流Isc和填充因子FF分别为3 2V,29 24μA/cm2,0 286。在实验中发现器件的外量子效率的光谱响应曲线与TPD的吸收光谱曲线基本一致,在紫外光照射下TPD/Gd(DBM)3bath膜层的界面处产生的激基复合物在光伏过程中扮演着至关重要的角色。Organic film photovoltaic cell, ITO/TPD/Gd(DBM)3bath/Mg∶Ag, was fabr icated. The TPD, N,N'diphenylN,N'bis(3methylphenyl)1,1'diphenyl4,4' diami ne, and Gd(DBM)3bath, gadolinium (dibenzoylmethanato)3(bathophenanthroline) , ar e the electron acceptor and donor, respectively. Fabrication process is indicate d shortly. Although TPD acts as an active layer in the bilayered cells, insertio n of a Gdcomplex film between TPD and the alloy cathode is necessary for effic i ent carrier photogeneration. Under the irradiation of 365nm UV light wi th 4mW/cm2, t he cell shows shortcircuit current of 2924μA/cm2, opencircuit voltage o f 3. 2V, fill factor of 0.286 and external quantum efficiency of 273, respectivel y. And the spectral response region of EQE is matched to the absorption spectrum o f TPD film, suggesting t hat it's the absorption of TPD layer but not that of the Gd(DBM)3 bath plays a d ominant role in the creation of photovoltaic. We also demonstrated the rela tions hip between photovoltaic phenomena and exciplex,  *, which generated at the interface between TPD and Gd(DBM)3 bath layers. And we ca n say t hat in the photovoltaic progress the exciplex * a ct s as a holeelectron pair, or in other words, acts as lightgenerated exciton.

关 键 词：稀土有机光伏器件 有机电致发光器件 外量子效率 开路电压 短路电流 紫外探测器 

分 类 号：TN383.1[电子电信—物理电子学] TN23