Gallium and indium co‐doped ZnO thin films for white light emitting diodes |
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Authors: | Saraswathi Chirakkara S B Krupanidhi |
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Institution: | Materials Research Centre, Indian Institute of Science, Bangalore 560012, India |
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Abstract: | Ga and In co‐doped ZnO (GIZO) thin films together with ZnO, In‐doped ZnO (IZO), Ga‐doped ZnO (GZO), and IZO/GZO multilayer for comparison, were grown on corning glass and boron doped Si substrates by PLD. The photoluminescence spectra of GIZO showed a strong white light emission and the current–voltage characteristics showed relatively lower turn‐on voltage and larger forward current. The CIE coordinates for GIZO were observed to be (0.31, 0.33) with a correlated colour temperature of 6650 K, indicating a cool white light, and establishing a possibility of white light emitting diodes. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
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Keywords: | ZnO doping multilayers photoluminescence |
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