Please use this identifier to cite or link to this item:
|Title:||Atomic-layer-deposited Al2O3-HfO2-Al 2O3 dielectrics for metal-insulator-metal capacitor applications|
|Citation:||Ding, S.-J., Zhu, C., Li, M.-F., Zhang, D.W. (2005). Atomic-layer-deposited Al2O3-HfO2-Al 2O3 dielectrics for metal-insulator-metal capacitor applications. Applied Physics Letters 87 (5) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.2005397|
|Abstract:||Atomic-layer-deposited Al2O3-HfO2-Al 2O3 dielectrics have been investigated to replace conventional silicon oxide and nitride for radio frequency and analog metal-insulator-metal capacitors applications. In the case of 1-nm-Al 2O3, sufficiently good electrical performances are achieved, including a high dielectric constant of ∼17, a small dissipation factor of 0.018 at 100 kHz, an extremely low leakage current of 7.8×10-9 A/cm2 at 1 MV/cm and 125 ° C, perfect voltage coefficients of capacitance (74 ppm/V2 and 10 ppm/V). The quadratic voltage coefficient of capacitance decreases with the applied frequency due to the change of relaxation time with different carrier mobility in insulator, and correlates with the dielectric composition and thickness, which is of intrinsic property owing to electric field polarization. Furthermore, the conduction mechanism of the AHA dielectrics is also discussed, indicating the Schottky emission dominated at room temperature. © 2005 American Institute of Physics.|
|Source Title:||Applied Physics Letters|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jan 12, 2019
WEB OF SCIENCETM
checked on Jan 2, 2019
checked on Dec 22, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.