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Effect of doping of cesium carbonate on electron transport in Tris(8-hydroxyquinolinato) aluminum
P. Tyagi, R. Srivastava, A. Kumar, , M.N. Kamalasanan
Published in Elsevier B.V.
Volume: 14
Issue: 5
Pages: 1391 - 1395
Abstract Electron transport studies in Tris(8-hydroxyquinolinato) aluminum (Alq3) is hindered due to lack of efficient electron injecting electrode. We demonstrate that an electron injection layer of Cs 2CO3 forms ohmic contact with Alq3, which enables the observation of SCLC. This allows us to directly determine the electron mobility in Alq3, which was found to be 1 × 10 -9 m2/V s at room temperature. Doping of Cs 2CO3 leads to increase in conductivity as well as mobility. Mobility has increased to 1 × 10-7 m2/V s for 33% doping of Cs2CO3.© 2013 Elsevier B.V. All rights reserved.
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Published in Elsevier B.V.
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