A correlation of capacitive RF-MEMS reliability to AlN dielectric film spontaneous polarization

Author(s):  
Eleni Papandreou ◽  
George Papaioannou ◽  
Tomas Lisec

This paper investigates the effect of spontaneous polarization of magnetron-sputtered aluminum nitride on the electrical properties and reliability of Radio Frequency – Micro-Electro-Mechanical Systems capacitive switches. The assessment is performed with the aid of application of thermally stimulated polarization currents in metal-insulator-metal capacitors and temperature dependence of device capacitance. The study reveals the presence of a surface charge, which is smaller than that expected from material spontaneous polarization, but definitely is responsible for the low degradation rate under certain bias polarization life tests.

2013 ◽  
Vol 26 (3) ◽  
pp. 239-245
Author(s):  
M. Koutsoureli ◽  
L. Michalas ◽  
G. Papaioannou

The assessment of dielectric charging in MEMS capacitive switches is investigated. The information can be obtained only from simultaneous assessment of Metal-Insulator-Metal capacitance and MEMS capacitive switches the former allowing the determination of material properties and the latter of the device.


2017 ◽  
Vol 47 (1) ◽  
pp. 677-683
Author(s):  
Cheng-Lin Cho ◽  
Hsuan-ling Kao ◽  
Yung-Hsien Wu ◽  
Li-Chun Chang ◽  
Chun-Hu Cheng

2014 ◽  
Vol 1691 ◽  
Author(s):  
H. García ◽  
H. Castán ◽  
S. Dueñas ◽  
E. Pérez ◽  
L. A. Bailón ◽  
...  

ABSTRACTHo2O3-TiO2 based metal-insulator-metal capacitors were grown by ALD, using Ho(thd)3, Ti(OCH(CH3)2)4 and ozone as precursors. The thicknesses of the films were in the range of 7.7 to 25 nm. Some of the films were post-deposited annealed in order to study the treatment effects. The capacitors were electrically characterized. Leakage current decreases as the amount of holmium increased in the films. Resistive switching behavior was obtained in the samples where the leakage current was low. This effect was also observed in Ho2O3 films, where no titanium was present in the films.


2014 ◽  
Vol 116 (4) ◽  
pp. 1647-1653 ◽  
Author(s):  
O. Khaldi ◽  
F. Jomni ◽  
P. Gonon ◽  
C. Mannequin ◽  
B. Yangui

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