The effect of annealing treatment on the performance of bulk heterojunction solar cells with donor and acceptor different weight ratios  

作　　者：SONG JingLu XU Zheng ZHANG FuJun ZHAO SuLing HU Tao LI JunMing LIU XiaoDong YUE Xin WANG YongSheng 

机构地区：[1]Key Laboratory of Luminescence and Optical Information(Beijing Jiaotong University),Ministry of Education,Beijing 100044,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2009年第10期1606-1610,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos.10774013 and 10804006);the National Natural Science Funds for Distinguished Young Scholar (Grant No. 60825407);the Major State Basic Research Development Program of China (Grant No.2010CB327705);the Beijing Jiaotong University (Grant No.2007RC065);the Research Fund for the Doctoral Program of Higher Education (Grant No.20070004024);the Research Fund for the Youth Scholars of the Doctoral Program of Higher Education (Grant No.20070004031);the 111 Project (Grant No.B08002)

摘　　要：Bulk heterojunction organic solar cells (OSCs) based on the blend of poly(2-methoxy-5(2′-ethyl-hexyloxy)-1,4-phenylenevinylene (MEH-PPV) and [6,6]-phenyl C61 butyric acid methyl ester (PCBM) with different weight ratios (from 1:3 to 1:5) have been fabricated and the effect of annealing treatment on the performance of OSCs has also been studied. Experimental results point to the best optimized doping concentration 1:4 for MEH-PPV:PCBM. Furthermore, it is found that the devices with annealing treatment at 150°C with 8 min show better performance compared with the devices without treatment. The series resistance (R s) is decreased, while the shunt resistance (R sh) increased by nearly 1.5 times. The short-circuit current density (J sc) and fill factor (FF) are improved by annealing treatment. As a result, the power conversion efficiency (PCE) of the devices increases from 0.49 % to 1.21 % with the ratio of 1:3 and from 1.09% to 1.42% with the ratio of 1:4.Bulk heterojunction organic solar cells(OSCs) based on the blend of poly(2-methoxy-5(2'-ethyl-hexyloxy)-1,4-phenylenevinylene(MEH-PPV) and [6,6]-phenyl C61 butyric acid methyl ester(PCBM) with different weight ratios(from 1:3 to 1:5) have been fabricated and the effect of annealing treatment on the performance of OSCs has also been studied.Experimental results point to the best optimized doping concentration 1:4 for MEH-PPV:PCBM.Furthermore,it is found that the devices with annealing treatment at 150℃ with 8 min show better performance compared with the devices without treatment.The series resistance(Rs) is decreased,while the shunt resistance(Rsh) increased by nearly 1.5 times.The short-circuit current density(Jsc) and fill factor(FF) are improved by annealing treatment.As a result,the power conversion efficiency(PCE) of the devices increases from 0.49 % to 1.21 % with the ratio of 1:3 and from 1.09% to 1.42% with the ratio of 1:4.

关 键 词：organic solar cells ANNEALING treatment BULK HETEROJUNCTION 

分 类 号：TM914.4[电气工程—电力电子与电力传动]