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Measurements of the External Luminescence Quantum Efficiency of Zinc Oxide
Mario Hauser,Alexander Hepting,Robert Hauschild,Markus Wissinger,Huijuan Zhou,Felix Stelzl,Johannes Fallert,Heinz Kalt,Claus Klingshirn 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.5
We report on the measurement of the absolute external luminescence quantum efficiency that is directly accessible using a miniature integrating sphere fitted into a cryostat. Various measurements have been carried out on high quality laboratory bulk samples and dierent commercially available ZnO powders from 10 K up to room temperature. A fit to the temperature dependent quantum efficiency shows the existence of various activated processes. We report on the measurement of the absolute external luminescence quantum efficiency that is directly accessible using a miniature integrating sphere fitted into a cryostat. Various measurements have been carried out on high quality laboratory bulk samples and dierent commercially available ZnO powders from 10 K up to room temperature. A fit to the temperature dependent quantum efficiency shows the existence of various activated processes.