Performance Improvement of Bulk Heterojunction Organic Photovoltaic Cell by Addition of a Hole Transport Material  

作　　者：张楠 刘倩 毛杰 刘遵峰 杨利营 印寿根 陈永胜 

机构地区：[1]Key Laboratory of Display Materials and Photoelectric Devices (Tianjin University of Technology), Ministry of Education , Institute of Material Physics, Tianjin University of Technology, Tianjin 300384 [2]Key Laboratory for Functional Polymer Materials and Center for Nanoscale Science & Technology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071

出　　处：《Chinese Physics Letters》2008年第3期1091-1093,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 60676051, 20644004, and 07JCYBJC03000, the Tianjin Natural Science Foundation （06TXTJJC14603）, the National Basic Research Program of China under Grant No 2006CBON0702）, the Specialized Research Fund for the Doctoral Programme of Higher Education of China under Grant No 20040055020, and Tianjin Key Laboratory for Photoelectric Materials and Devices.

摘　　要：A novel photovoltaic cell with an active layer of poly（phenyleneethynylene） （PPE）/C60/N,N＇-diphenyl-N,N＇-di-（m-tolyl）-p-benzidine （TPD） is designed. In the active layer, PPE is the major component; C60 and TPD are the minor ones. Compared with a control BHJ device based on PPE/C60, the short circuit current density Jsc is increased by 1 order of magnitude, and the whole device performance is increased greatly, however the open circuit voltage Voc is largely decreased. The possible mechanism of the improved performance may be as follows： In the PPE/C60/TPD device, PPE, C60, and TPD serve as the energy harvesting material, the electron transport material, and the hole transport material, respectively. As the TPD and C60 are spatially separated by PPE, the charge recombination is effectively retarded.A novel photovoltaic cell with an active layer of poly（phenyleneethynylene） （PPE）/C60/N,N＇-diphenyl-N,N＇-di-（m-tolyl）-p-benzidine （TPD） is designed. In the active layer, PPE is the major component; C60 and TPD are the minor ones. Compared with a control BHJ device based on PPE/C60, the short circuit current density Jsc is increased by 1 order of magnitude, and the whole device performance is increased greatly, however the open circuit voltage Voc is largely decreased. The possible mechanism of the improved performance may be as follows： In the PPE/C60/TPD device, PPE, C60, and TPD serve as the energy harvesting material, the electron transport material, and the hole transport material, respectively. As the TPD and C60 are spatially separated by PPE, the charge recombination is effectively retarded.

关 键 词：LIGHT-EMITTING-DIODES SOLAR-CELLS POLYMER DEVICES MOLECULES BLEND 

分 类 号：O59[理学—应用物理]