Abstract
The micro-Raman spectra of a double-layer light-emitting diode fabricated with poly(3,4-ethylenedioxythiophene)-poly(4-styrenesulfonate) (PEDOT-PSS) as a hole-injection layer and poly(2,7-(9,9-dioctylfluorene)-alt-benzothiadiazole) (F8BT) blended with poly(9,9-dioctylfluorene) (PF8) as an emissive layer have been measured with excitation at 633 nm. After the operation of the device, the intensities of the bands due to PEDOT have increased. These increases in Raman intensity have been attributed to the reduction (dedoping) of PEDOT chains during operation on the basis of the results of electrochemical oxidation and reduction of a PEDOT-PSS film. The reduction of PEDOT chains is most likely one of the intrinsic factors of the degradation of polymer light-emitting diodes.
| Original language | English |
|---|---|
| Pages (from-to) | 395-398 |
| Number of pages | 4 |
| Journal | Chemical Physics Letters |
| Volume | 412 |
| Issue number | 4-6 |
| DOIs | |
| Publication status | Published - 2005 Sep 5 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Spectroscopy
- Atomic and Molecular Physics, and Optics
- Surfaces and Interfaces
- Condensed Matter Physics
Cite this
Raman spectral changes of PEDOT-PSS in polymer light-emitting diodes upon operation. / Sakamoto, Satoshi; Okumura, Masanori; Zhao, Zinggang; Furukawa, Yukio.
In: Chemical Physics Letters, Vol. 412, No. 4-6, 05.09.2005, p. 395-398.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Raman spectral changes of PEDOT-PSS in polymer light-emitting diodes upon operation
AU - Sakamoto, Satoshi
AU - Okumura, Masanori
AU - Zhao, Zinggang
AU - Furukawa, Yukio
PY - 2005/9/5
Y1 - 2005/9/5
N2 - The micro-Raman spectra of a double-layer light-emitting diode fabricated with poly(3,4-ethylenedioxythiophene)-poly(4-styrenesulfonate) (PEDOT-PSS) as a hole-injection layer and poly(2,7-(9,9-dioctylfluorene)-alt-benzothiadiazole) (F8BT) blended with poly(9,9-dioctylfluorene) (PF8) as an emissive layer have been measured with excitation at 633 nm. After the operation of the device, the intensities of the bands due to PEDOT have increased. These increases in Raman intensity have been attributed to the reduction (dedoping) of PEDOT chains during operation on the basis of the results of electrochemical oxidation and reduction of a PEDOT-PSS film. The reduction of PEDOT chains is most likely one of the intrinsic factors of the degradation of polymer light-emitting diodes.
AB - The micro-Raman spectra of a double-layer light-emitting diode fabricated with poly(3,4-ethylenedioxythiophene)-poly(4-styrenesulfonate) (PEDOT-PSS) as a hole-injection layer and poly(2,7-(9,9-dioctylfluorene)-alt-benzothiadiazole) (F8BT) blended with poly(9,9-dioctylfluorene) (PF8) as an emissive layer have been measured with excitation at 633 nm. After the operation of the device, the intensities of the bands due to PEDOT have increased. These increases in Raman intensity have been attributed to the reduction (dedoping) of PEDOT chains during operation on the basis of the results of electrochemical oxidation and reduction of a PEDOT-PSS film. The reduction of PEDOT chains is most likely one of the intrinsic factors of the degradation of polymer light-emitting diodes.
UR - http://www.scopus.com/inward/record.url?scp=23944469840&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=23944469840&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2005.07.040
DO - 10.1016/j.cplett.2005.07.040
M3 - Article
VL - 412
SP - 395
EP - 398
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-6
ER -