2014 | OriginalPaper | Buchkapitel
Investigation of Current Conduction Mechanism in HfO2 Thin Film on Silicon Substrate
verfasst von : Anil G. Khairnar, Khushaboo S. Agrawal, Vilas S. Patil, Ashok M. Mahajan
Erschienen in: Physics of Semiconductor Devices
Verlag: Springer International Publishing
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In this work, we have investigated current conduction mechanisms in HfO
2
thin film deposited on silicon substrate by RF sputtering technique. The thin films of HfO
2
were deposited on p-type silicon substrates. FTIR measurement shows the presence of hafnium in the film. Among the various conduction mechanisms the 13.7 nm thin HfO
2
film on Si follows the Fowler–Nordheim (FN) tunneling. The Poole–Frenkel (PF) emission, Schottky emission (SE) and Direct Tunneling (DT) also studied. The barrier height (ϕ
B
) of 0.74 eV is calculated from experimental work through Fowler–Nordheim tunneling mechanism.