Abstract
Recently, we have reported transient electroluminesence (EL) measurements in an organic light-emitting diode based on a poly(p-phenylenevinylene) (PPV) derivative carrying an electron-transporting moiety, poly[(2-(4-biphenyl)-5-(4-tert-butylphenyl)-1,3,4-oxdianzole)-p- phenylenevinylene] (PPPDPV), in order to investigate the mechanism of the enhanced external quantum efficiency. In this work, we have carried out J-E (I-V) characteristics measurements in EL devices based on PPV and PPPDPV, respectively, which revealed a space-charge limited conduction (SCLC) with exponential trap distribution mechanism in both. The trap densities of majority carrier were calculated from the J-E (I-V) curves and were compared with the EL external quantum efficiencies.
Original language | English |
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Pages (from-to) | 475-476 |
Number of pages | 2 |
Journal | Synthetic Metals |
Volume | 119 |
Issue number | 1-3 |
DOIs | |
State | Published - 15 Mar 2001 |
Keywords
- Hole trap density
- J-E (I-V) measurement
- PPPDPV
- PPV
- Space charge limited conduction