Hybrid organic/inorganic bulk heterojunction solar cells

作者：Liu Junpeng^*; Qu Shengchun; Zeng Xiangbo; Xu Ying; Chen Yonghai; Wang Zhijie; Zhou Huiying; Wang Zhanguo

来源：Pan Tao Ti Hsueh Pao/chinese Journal of Semiconductors, 2007, 28(SUPPL.): 364-368.

• Hybrid organic/inorganic bulk heterojunction solar cells
• Photovoltaic (PV) performance
• Zinc oxide nanocrystals

Wurtzite-type ZnO nanocrystals are synthesized by simple technology in low temperature and are characterized by HRTEM, XRD and PL technology. Hybrid organic/inorganic bulk heterojunction solar cells with a structure of ITO/PE-DOT:PSS/ZnO:MDMO-PPV/Al are fabricated utilizing ZnO nanocrystals and poly[2-methoxy-5-(3';, 7';-dimethyloctyloxy)-1, 4-phenyIenevinylene] (MDMO-PPV). As a comparison, pure organic solar cells with a structure of ITO/PEDOT:PSS/MD-MO-PPV/Al are fabricated. The J-V curves show that the energy conversion efficiency can be improved about 550 times by addition of ZnO nanocrystals. PL experimental results indicate that the reason might be higher possibility of charges separation by addition of ZnO nanocrystals with high electron affinity. Another possible reason which caused higher photovoltaic (PV) performance is higher electron mobilities in ZnO-polymer PV devices compared with pure organic solar cells. In addition, the reasons of lower photovoltaic performance of the kinds of solar cells than conventional solar cells are analyzed, and possible solutions are proposed.

• 出版日期2007