Optical and electrical properties of single-ion transport light-emitting electrochemical cells

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We present electrical and optical characteristics of single-ion transport light-emitting electrochemical cells (SLECs) based on a blend film of poly(p-phenylene vinylene) derivative with ion-conducting side groups and ionized polyurethane-poly(ethylene glycol). The turn-on voltage of the SLECs is lower than 4 V. The response time of the SLECs is less than 10 ms, which is approximately two orders of magnitude faster than that of conventional bi-ionic transport light-emitting electrochemical cells. The quick response can be explained on the basis of both good compatibility between the two polymers and weak scattering behavior of the counter ions. In addition, according to the transient current and electroluminescence characteristics, we reveal that the electrical field is close to zero in the inner of the SLEC under the condition of steady state.

Published in:
Journal of Applied Physics (Volume:99 , Issue: 6 )

Date of Publication: Mar 2006

Page(s):: 064505 - 064505-5
ISSN :: 0021-8979
Digital Object Identifier :: 10.1063/1.2180452
Product Type:: Journals & Magazines

Date of Current Version :: 18 June 2009
Issue Date :: Mar 2006

Author(s)

Kong, F.
National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, People’s Republic of China and Department of Physics, Nanjing University, Nanjing 210093, People’s Republic of China
Wu, X.L. ; Zheng, Y. ; Ou, C.G. ; Yuan, R.K. ; Yang, C.Z. ; Chu, P.K.