摘要
以P3HT(Poly(3-Hexylthiophene))为电子给体,PCBM([6,6]-Phenyl C61Butyric Acid Methyl Ester)为电子受体,在活性层P3HT:PCBM的退火过程中,利用磁场对活性层有机分子的排列取向作用,制备了有机体异质结太阳能电池。研究结果表明:当磁场强度为0.9MA/m时,器件的短路电流密度从7.414A/cm2提高到8.332A/cm2,填充因子也相应地增加,但开路电压却有所降低,最高的光电转换效率为2.562%。由光致发光光谱和原子力显微图像可知,磁场对活性层的结晶度、内部分子排列和表面形貌都有明显的影响。
A series of poly（3-hexylthiophene） （P3HT）/[6,6]-phenyl-C61 butyric acid methyl ester （PCBM） bulk heterojunction polymer solar cells were fabricated via a simple method,i, e. applying an external magnetic field on the active layer in its annealing process, which is based on the magnetic field effect on the alignment of the active layer＇s molecules. The experimental results demonstrate that the maximum photoelectric conversion efficiency （PCE） of 2. 562% is achieved when the magnetic intensi- ty is 0. 9 MA/m. The short-circuit current density is raised from 7. 414 mA/cm2 to 8. 332 mA/cm2 ,and the fill factor from 0. 512% to 0. 543% ,but the open-circuit voltage almost remains the same. As char- acterized by the photoluminescence speetrum and atomic force microscope （AFM）,the magnetic field had obvious effects on the molecular alignment and the erystallinity of the active layer and the surface morphology of film.
出处
《高压物理学报》
CAS
CSCD
北大核心
2016年第1期71-77,共7页
Chinese Journal of High Pressure Physics
基金
国家自然科学基金(51278235)
云南省高校结构健康诊断重点实验室平台建设项目(KKKP201207003)
昆明理工大学学科方向团队基金(14078202)
