Using Intrinsic Layer to Improve the Efficiency of Organic Solar Cells
Organic small molecule and polymer materials are being considered as solar cell material in place of silicon wafer. Organic solar cells are now a popular subject in international research. This study uses ZnPc and C60 as respectively the donor material and acceptor material of Organic Solar Cells (OSC) and examines the effects of different blocking layers and structures (P-N junction and P-I-N structure) on open-circuit voltage (VOC), short-circuit current (ISC), fill factor (FF) and efficiency of solar cell. It is found under the same thickness of 15nm, the short-circuit current generated by the BCP and BAlq3 blocking layers is respectively 1.36 and 1.19mA/cm2. This is because the BCP has higher energy gap and Highest Occupied Molecular Orbital (HOMO) than BAlq3, which enables BCP to block excitons and holes better. When the P-I-N structure is ZnPc(30 nm)/C60(40 nm) and ZnPc(30 nm)/ZnPc:C60(20 nm)/C60(40 nm), the short-circuit current produced could be increased to 2.67mA/cm2 respectively. This is because the intrinsic layer increases the contact area of P-N junction, enabling more excitons to dissociate into free charges.
Wei Ping Chu Yu Sheng Tsai Fuh Shyang Juang Tao Sheng Li Chang Han Chung
nstitute of Electro-Optical and Materials Science, Formosa University Huwei, Yunlin 632, Taiwan, Chi Institute of Electro-Optical and Materials Science, Formosa University Huwei, Yunlin 632, Taiwan, Ch nstitute of Electrical-Engineering, Kun-Shan University Yong Kang, Tainan 710, Taiwan, China
国际会议
Progress in Electromagnetics Research Symposium 2007(2007年电磁学研究新进展学术研讨会)(PIERS 2007)
北京
英文
1178-1181
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）