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Título del libro: Hafnium-Indium-Zinc Oxide Thin Film Transistors Using Hfo2 As Gate Dielectric, With Both Layers Deposited By Rf Sputtering

Autores UNAM:
JULIO CESAR TINOCO MAGAÑA;
Autores externos:

Idioma:

Año de publicación:
2016
Palabras clave:

Dielectric materials; Gate dielectrics; Hafnium; Hafnium oxides; Indium; Microelectronics; Oxide semiconductors; Students; Thin film transistors; Thin films; Transistors; Zinc; Zinc oxide, Amorphous oxide semiconductor (AOS); AOSTFTs; Electrical performance; Hafnium indium zinc oxides; Operation voltage; Output characteristics; RF-sputtered HfO2; RF-sputtered HIZO, Thin film circuits


Resumen:

The electrical performance of RF magnetron sputtered Hafnium-Indium-Zinc-Oxide-based thin film transistors (HIZO TFTs) is compared using two different gate dielectrics: A) RF sputtered HfO2 and b) thermally grown SiO2. For HfO2 devices, output characteristics showed higher drain-currents capabilities with a reduction of the TFT operation voltage range from 0-15 V, when using SiO2, to 0-8 V. The HfO2 dielectric constant was around 15, measured at 1 kHz. Vt was less than 2 V for HfO2 devices and around 5 V for SiO2 devices. © 2016 IEEE.


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