Electrical conduction in gold nanoparticles embedded indium oxide films: A crossover from metallic to insulating behavior.

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ID: 24348
2019
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Ranked #29 of 53 articles by views in journal of physics condensed matter : an institute of physics journal

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Abstract
Electrical conductivity of indium oxide and gold nanoparticles incorporated indium oxide films grown by dc sputtering have been studied in the temperature range 1.5 to 300 K. Films with 0, 6 and 12 % gold nanoparticle volume fraction exhibit metallic nature in the temperature interval 1.5 to 20 K, with conduction being governed by electron-electron interaction. Films with 20 % gold nanoparticle volume fraction showed insulating nature and the conduction was governed by variable range hopping mechanism in the temperature range 1.5 to 50 K. Further a crossover from Efros-Shklovskii to Mott type was observed around 15 K. The transition from metallic to insulating nature in spite of the larger gold nanoparticle volume fraction is attributed to the inhibition of oxygen vacancies by Au species during the film growth. At higher temperatures, all films exhibit activated conduction.
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sen2019electricaljournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Sen, Prabal;Kar, Durgesh;Laha, Ranjit;Mevani Raju, Ananthan;Kasiviswanathan, Subbiah;
Journal journal of physics condensed matter : an institute of physics journal
Year 2019
DOI
10.1088/1361-648X/ab3d1f
URL
Keywords Keywords not found

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