Impedance Spectroscopy of π‐Conjugated Organic Materials | Zendy

Kim Seong Hyun | Zendy; Chu Hye Yong | Zendy; Zyung Taehyoung | Zendy; Yang Yong Suk | Zendy

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Impedance Spectroscopy of π‐Conjugated Organic Materials

Author(s) -

Kim Seong Hyun,

Chu Hye Yong,

Zyung Taehyoung,

Yang Yong Suk

Publication year - 2004

Publication title -

etri journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.295

H-Index - 46

eISSN - 2233-7326

pISSN - 1225-6463

DOI - 10.4218/etrij.04.0102.0018

Subject(s) - dielectric spectroscopy , materials science , oled , phenylene , conjugated system , electrical impedance , diode , optoelectronics , thermal conduction , light emitting diode , spectroscopy , electrochemistry , polymer , electrical engineering , nanotechnology , chemistry , physics , electrode , composite material , layer (electronics) , quantum mechanics , engineering

AC electrical properties of organic light‐emitting diodes with poly(2‐methoxy‐5‐(2'‐ethyl‐hexyloxy)‐1,4‐phenylenevinylene) (MEH‐PPV), poly[2,5‐bia(dimethyloctylsilyl)‐1,4‐phenylene‐vinylene] (BDMOS‐PPV), and tris‐(8‐hydroxyquinolate)‐aluminum (AlQ 3 ) as light‐emitting materials are studied. The frequency‐dependent real and imaginary parts of impedance were fitted using an equivalent circuit. We found that the conduction mechanism is a space‐charge limited current with exponential trap distribution.

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