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Kim, Jin Young
Next Generation Energy Laboratory
Research Interests
  • Polymer solar cells, QD solar cells, organic-inorganic hybrid solar cells, perovskite solar cells, OLEDs, PeLEDs, organic FETs

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High-efficiency bipolar electroluminescent polymer containing an oxadiazole pendant group

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Title
High-efficiency bipolar electroluminescent polymer containing an oxadiazole pendant group
Author
Kim, Jin YoungPark, SHLee, KJin, SH
Keywords
Bipolar; Oxadiazole; Poly(p-phenylenevinylene); Polymer light-emitting diode
Issue Date
2005-07
Publisher
KOREAN PHYSICAL SOC
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.47, no.1, pp.167 - 170
Abstract
By introducing electron-deficient 1,3,4-oxadiazole pendant units into poly(p-phenylenevinylene) as a side chain, we have achieved high-performance polymer light-emitting diodes with aluminum (At) electrodes and a luminance efficiency of similar to 20 cd/A. These results are attributed to the high electron affinity and the good electron transport, of the oxadiazole units, which facilitate electron injection from the Al electrode and bipolar transport in the active layer. The 'bipolar' nature of this system is strongly supported by the time-of-flight measurements, which exhibit symmetric photocurrent transients between the electrons and holes, these transients are mainly responsible for the excellent performance of this system because the help achieve charge balance in the devices.
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DOI
10.3938/jkps.47.167
ISSN
0374-4884
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ECHE_Journal Papers
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