Review of Morphology Dependent Charge Carrier Mobility in MEH-PPV

被引:21
作者
Inigo, A. R. [1 ,2 ,3 ]
Huang, Y. F. [1 ,2 ]
White, J. D. [1 ,2 ,4 ]
Huang, Y. S. [5 ]
Fann, W. S. [1 ,2 ]
Peng, K. Y. [4 ]
Chen, S. A. [6 ]
机构
[1] Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan
[2] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan
[3] Univ Surrey, Adv Technol Inst, Nanoelect Ctr, Surrey GU2 7XH, England
[4] Yuan Ze Univ, Dept Photon Engn, Chungli 320, Taiwan
[5] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan
[6] Natl Tsing Hwa Univ, Dept Chem Engn, Hsinchu 300, Taiwan
关键词
MEH-PPV; TOF; TrEL; FET; Morphology; Drift mobility; LIGHT-EMITTING-DIODES; TRANSIENT ELECTROLUMINESCENCE; INTERCHAIN INTERACTIONS; CONJUGATED POLYMERS; DEVICE PERFORMANCE; THIN-FILMS; TRANSPORT; AGGREGATION;
D O I
10.1002/jccs.201000068
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Charge carrier mobility in poly(2-methoxy,5(2'-ethyl-hexyloxy)-p-phenylene vinylene) (MEH-PPV) films were measured as a function of temperature and electric field parallel and perpendicular to the substrate for devices prepared from different solvents and under different processing conditions Bulk structural morphology was characterized by various X-ray diffraction measurements such as wide angle, small angle and X-ray reflection. Surface morphology was characterized using various scanning probe microscopic techniques Mobilities were found to follow Gaussian disorder model (GDM) and to be highly anisotropic not only depending on the solvents used but also on the film preparation method such as spin-coating or drop-casting While no direct correlation was found between charge carrier mobility and photoluminescence, charge transport parameters were correlated with structural morphology
引用
收藏
页码:459 / 468
页数:10
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