Enhanced luminance of MEH-PPV based PLEDs using single walled carbon nanotube composite as an electron transporting layer

Singh, Inderpreet and Madhwal, Devinder and Verma, A. and Kumar, A. and Rait, S. and Kaur, Inderpreet and Bharadwaj, L.M. and Bhatia, C.S. and Bhatnagar, P.K. and Mathur, P.C. (2010) Enhanced luminance of MEH-PPV based PLEDs using single walled carbon nanotube composite as an electron transporting layer. Journal of luminescence, 130 (11). pp. 2157-2160. ISSN 0022-2313

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

Abstract

An efficient electron transporting layer (ETL) based on single walled carbon nanotube (SWCNT) composites has been developed for poly [2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) based orange polymer light emitting diodes (PLEDs) and its effect on the performance of PLEDs has been examined. It is observed that with increase in SWCNT concentration, in ETL, the luminance and luminous efficiency of the PLEDs increase (about 5 times increase in luminance is observed at 5% w/w SWCNT concentration). The SWCNTs present in the MEH-PPV ETL boost the mobility of electrons injected from the cathode towards the emissive layer by establishing highly conducting percolation paths. This balances the concentration of holes and electrons in the emissive layer, which leads to enhanced emission from the PLEDs.

Item Type: Article
Uncontrolled Keywords: PLEDs; Luminance; Polymer-SWCNT composites; Electron transporting layer
Subjects: CSIO > Nano Science and Nano Technology
Depositing User: Ms T Kaur
Date Deposited: 22 Jan 2012 14:29
Last Modified: 10 Apr 2012 16:28
URI: http://csioir.csio.res.in/id/eprint/133

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