scholarly journals Characterization of Al-doped ZnO thin films by laboratory-based hard X-ray photoelectron spectroscopy system

2019 ◽  
Vol 26 (2) ◽  
pp. 214-215
Author(s):  
Ishiki Takeda ◽  
Hisao Makino
Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1282 ◽  
Author(s):  
Zhao ◽  
Li ◽  
Ai ◽  
Wen

A kind of devices Pt/Ag/ZnO:Li/Pt/Ti with high resistive switching behaviors were prepared on a SiO2/Si substrate by using magnetron sputtering method and mask technology, composed of a bottom electrode (BE) of Pt/Ti, a resistive switching layer of ZnO:Li thin film and a top electrode (TE) of Pt/Ag. To determine the crystal lattice structure and the Li-doped concentration in the resulted ZnO thin films, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) tests were carried out. Resistive switching behaviors of the devices with different thicknesses of Li-doped ZnO thin films were studied at different set and reset voltages based on analog and digital resistive switching characteristics. At room temperature, the fabricated devices represent stable bipolar resistive switching behaviors with a low set voltage, a high switching current ratio and a long retention up to 104 s. In addition, the device can sustain an excellent endurance more than 103 cycles at an applied pulse voltage. The mechanism on how the thicknesses of the Li-doped ZnO thin films affect the resistive switching behaviors was investigated by installing conduction mechanism models. This study provides a new strategy for fabricating the resistive random access memory (ReRAM) device used in practice.


2009 ◽  
Vol 79 (7) ◽  
Author(s):  
Steve M. Heald ◽  
Tiffany Kaspar ◽  
Tim Droubay ◽  
V. Shutthanandan ◽  
Scott Chambers ◽  
...  

2014 ◽  
Vol 106 ◽  
pp. 26-32 ◽  
Author(s):  
N.L. Tarwal ◽  
K.V. Gurav ◽  
T. Prem Kumar ◽  
Y.K. Jeong ◽  
H.S. Shim ◽  
...  

1992 ◽  
Vol 270 ◽  
Author(s):  
Haojie Yuan ◽  
R. Stanley Williams

ABSTRACTThin films of pure germanium-carbon alloys (GexC1−x with x ≈ 0.0, 0.2, 0.4, 0.5, 0.6, 0.8, 1.0) have been grown on Si(100) and A12O3 (0001) substrates by pulsed laser ablation in a high vacuum chamber. The films were analyzed by x-ray θ-2θ diffraction (XRD), x-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES), conductivity measurements and optical absorption spectroscopy. The analyses of these new materials showed that films of all compositions were amorphous, free of contamination and uniform in composition. By changing the film composition, the optical band gap of these semiconducting films was varied from 0.00eV to 0.85eV for x = 0.0 to 1.0 respectively. According to the AES results, the carbon atoms in the Ge-C alloy thin film samples has a bonding configuration that is a mixture of sp2 and sp3 hybridizations.


Author(s):  
Fouaz Lekoui ◽  
Salim Hassani ◽  
Mohammed Ouchabane ◽  
Hocine Akkari ◽  
Driss Dergham ◽  
...  

2020 ◽  
Author(s):  
Irine Linson ◽  
Sreedev Padmanabhan ◽  
Rakhesh Vamadevan ◽  
Roshima Narayanankutty Sujatha ◽  
Balakrishnan Shankar

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