Photoconductive Properties of MEH-PPV/CuS-Nanoparticle Composites

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2006,（3）
• 页码范围: 693-696
• 页数: 4页
• 语种: 英文

摘要

Photoconductive properties of photodiodes based on composites of CuS nanoparticles and Poly[2-methoxy, 5-(2'-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV) are investigated. By comparing composite devices with different MEH-PPV:CuS weight ratios of 1:1 (D2-1), 1:1.25 (D2-2), 1:2.5 (D2-3) and 1:5 (D2-4), it is found that the device D2-3 exhibited the best performance: the short-circuit current density of 17tμA/cm2 with the light intensity of 16. 7mW/cm2, the highest open-circuit voltage of 0.83 V, and the photosensitivity of 132 at reverse bias of-1 V. The photosensitivity is improved by a factor of 5 compared with the undoped MEH-PPV device.