Photocurrent spectral responses in poly (2,5-dimethoxy-p-phenylenevinylene) devices

Narayan, K. S. ; Gautam, K. S. ; Shivkumar, B. ; Ramakrishnan, S. (1996) Photocurrent spectral responses in poly (2,5-dimethoxy-p-phenylenevinylene) devices Synthetic Metals, 80 (3). pp. 239-242. ISSN 0379-6779

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0379-6779(96)80208-6

Abstract

We report the spectral response of the photocurrent in the sandwich configuration of poly (2,5- dimethoxy- p- phenylenevinylene) (DMPPV ) devices. The photocurrent spectral responses are dependent on the polarity of the illuminated surface and the electrodes. The polarity- dependent photocurrent is modeled on a basis where charge carrier drift plays a dominant mechanism and hole transport is predominant over electron transport. The model can explain the results for the Au/DMPPV/Au symmetric configuration. The model cannot however explain the results for the indium- tin oxide (ITO)/DMPPV/Al device. The response for the light incident on the Al side is also reported. The spectral dependence is also studied as a function of bias electric field. Mechanisms leading to the behavior of the photocurrent spectral dependence are speculated.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Poly (2,5-dimethoxy-p-phenylenevinylene); Devices; Photocurrent; Spectral Response
ID Code:60051
Deposited On:08 Sep 2011 10:04
Last Modified:08 Sep 2011 10:04

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