Hole Transport Properties of MEH-PPV at Different Excitation Wavelengths
Hole Transport Properties of MEH-PPV at Different Excitation Wavelengths
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DOI：
10.1088/0256-307x/23/4/052
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发表时间：
2006-04
影响因子：
3.5
通讯作者：
Shi Quan-Min;Hou Yanbing;Lu Jing;Jin Hui;Li Yun-bai
中科院分区：
文献类型：
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作者：
Shi Quan-Min;Hou Yanbing;Lu Jing;Jin Hui;Li Yun-bai
采用光电流飞行时间法研究了聚合物2-甲氧基，5-（2 ′-乙基己氧基）-1，4-亚苯基亚乙烯基（MEH-PPV）的空穴输运性质。在MEH-PPV吸收边附近，随着激发波长的增加，空穴输运性质由非色散型向色散型转变。在室温下，MEH-PPV的有效迁移率取决于所施加的电场，这在一些有机材料中很常见。
Using the time-of-flight photocurrent measurements, we investigate the hole transport properties of polymer 2-methoxy, 5-(2'-ethyl-hexyloxy)-1, 4-phenylene vinylene (MEH-PPV). The change of hole transport properties from non-dispersive transport to a dispersive type is presented, with the increasing excitation wavelength near the MEH-PPV absorption edge. At room temperature, the effective mobility of MEH-PPV depends on the applied electric field as commonly seen in some organic materials.