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Diamond Based Field‐Effect Transistors of Zr Gate with SiNx Dielectric Layers

MetadataDetails
Publication Date2015-01-01
JournalJournal of Nanomaterials
AuthorsWei Wang, Chao Hu, S. Y. Li, Fengnan Li, Zhichao Liu
InstitutionsXi’an Jiaotong University
Citations19

Investigation of Zr‐gate diamond field‐effect transistor with SiN x dielectric layers (SD‐FET) has been carried out. SD‐FET works in normally on depletion mode with p‐type channel, whose sheet carrier density and hole mobility are evaluated to be 2.17 × 10 13 cm −2 and 24.4 cm 2 ·V −1 ·s −1 , respectively. The output and transfer properties indicate the preservation of conduction channel because of the SiN x dielectric layer, which may be explained by the interface bond of C‐N. High voltage up to −200 V is applied to the device, and no breakdown is observed. For comparison, another traditional surface channel FET (SC‐FET) is also fabricated.