Interfacial Engineering of Mo/Hf0.3Zr0.7O2/Si Capacitor Using Direct Scavenging Effect of Thin Ti layer

2021 ◽  
Author(s):  
Se Hyun Kim ◽  
Geun Taek Yu ◽  
Geun Hyeong Park ◽  
Dong Hyun Lee ◽  
Ju-Yong Park ◽  
...  
Keyword(s):  
Sacrificial Layer ◽  
Charge Trapping ◽  
Layer Charge ◽  
Tio2 Layer ◽  
Interfacial Engineering ◽  
Scavenging Effect

An antiferroelectric Mo/Hf0.3Zr0.7O2/SIOx/Si capacitor was engineered using the direct scavenging effect of a sputtered Ti sacrificial layer. Charge trapping could be mitigated with the oxidized TiO2 layer, and the endurance...

Charge Trapping and Degradation Properties of PZT Thin Films for MEMS

1996 ◽  
Vol 444 ◽  
Author(s):  
Hyeon-Seag Kim ◽  
D. L. Polla ◽  
S. A. Campbell
Keyword(s):  
Thin Films ◽  
Loss Factor ◽  
High Field ◽  
Microelectromechanical Systems ◽  
Charge Trapping ◽  
Metal Organic ◽  
Electrical Reliability ◽  
Silicon Based ◽  
Degradation Properties ◽  
Organic Decomposition

AbstractThe electrical reliability properties of PZT (54/46) thin films have been measured for the purpose of integrating this material with silicon-based microelectromechanical systems. Ferroelectric thin films of PZT were prepared by metal organic decomposition. The charge trapping and degradation properties of these thin films were studied through device characteristics such as hysteresis loop, leakage current, fatigue, dielectric constant, capacitancevoltage, and loss factor measurements. Several unique experimental results have been found. Different degradation processes were verified through fatigue (bipolar stress), low and high charge injection (unipolar stress), and high field stressing (unipolar stress).

Modeling of Triangular Sacrificial Layer Residue Effect in Nano-Electro-Mechanical Nonvolatile Memory

2013 ◽  
Vol E96.C (5) ◽  
pp. 714-717
Author(s):  
Woo Young CHOI ◽  
Min Su HAN ◽  
Boram HAN ◽  
Dongsun SEO ◽  
Il Hwan CHO
Keyword(s):  
Nonvolatile Memory ◽  
Sacrificial Layer

Carbon Coating for Electron Beam Testing and Focus Ion Beam Reconfiguration

1996 ◽  
Author(s):  
P. Perdu ◽  
G. Perez ◽  
M. Dupire ◽  
B. Benteo
Keyword(s):  
Electron Beam ◽  
Sample Preparation ◽  
Carbon Coating ◽  
Focused Ion Beam ◽  
Sacrificial Layer ◽  
Ion Beam ◽  
Electrical Characterization ◽  
Fault Analysis ◽  
Voltage Contrast ◽  
The Right

Abstract To debug ASIC we likely use accurate tools such as an electron beam tester (Ebeam tester) and a Focused Ion Beam (FIB). Interactions between ions or electrons and the target device build charge up on its upper glassivation layer. This charge up could trigger several problems. With Ebeam testing, it sharply decreases voltage contrast during Image Fault Analysis and hide static voltage contrast. During ASIC reconfiguration with FIB, it could induce damages in the glassivation layer. Sample preparation is getting a key issue and we show how we can deal with it by optimizing carbon coating of the devices. Coating is done by an evaporator. For focused ion beam reconfiguration, we need a very thick coating. Otherwise the coating could be sputtered away due to imaging. This coating is use either to avoid charge-up on glassivated devices or as a sacrificial layer to avoid short circuits on unglassivated devices. For electron beam Testing, we need a very thin coating, we are now using an electrical characterization method with an insitu control system to obtain the right thin thickness. Carbon coating is a very cheap and useful method for sample preparation. It needs to be tuned according to the tool used.

A comparative study of charge trapping effect in p-type MoTe2 and WSe2 FETs using pulsed current–voltage measurements

2021 ◽  
Vol 60 (1) ◽  
pp. 011003
Author(s):  
Jeong Yong Yang ◽  
Chan Ho Lee ◽  
Young Taek Oh ◽  
Jiyeon Ma ◽  
Junseok Heo ◽  
...  
Keyword(s):  
Comparative Study ◽  
Charge Trapping ◽  
Pulsed Current ◽  
Trapping Effect ◽  
Current Voltage ◽  
P Type

Chemical Constituents Isolated from Rhododendron ungernii with Antioxidant Profile

2019 ◽  
Vol 9 (3) ◽  
pp. 238-243 ◽  
Author(s):  
Emine Dede ◽  
Nusret Genc ◽  
Mahfuz Elmastas ◽  
Huseyin Aksit ◽  
Ramazan Erenler
Keyword(s):  
Antioxidant Activities ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Reducing Power ◽  
Scavenging Activity ◽  
Isolation And Identification ◽  
Reduced Pressure ◽  
Scavenging Effect ◽  
Pharmaceutical Industries ◽  
Dpph Scavenging

Background: Plant in Rhododendron genus that contains phenolic compounds has been used in traditional medicine and revealed considerable biological activities. Objective: Isolation and identification of antioxidant natural products from Rhododendron ungernii. Methods: Rhododendron ungernii Trautv. flowers were collected and dried in shade. The dried flowers were extracted with methanol for 3 days. The solvent was removed by reduced pressure to yield the extract which was subjected to column chromatography (Sephadex LH-20, C18 reversed phase column) to isolate catechin-7-O-glucoside (1), quercetin-3-O-β-galactoside (2), quercetin-3-O- β-xyloside (3), farrerol (4), myricetin (5), and quercetin (6). The structures of isolated compounds were elucidated by spectroscopic methods such as 1D-NMR, 2D-NMR, and LC-TOF/MS. DPPH scavenging effect, ABTS+ scavenging activity, and reducing power (FRAP) were performed for antioxidant assays of isolated natural compounds. Results: Isolated flavonoids displayed the outstanding antioxidant activities. Catechin-7-O-glucoside (1) and quercetin-3-O-β-galactoside (2) (IC50, 3.66 µg/mL) had the most DPPH• scavenging effect among the compounds. The highest ABTS•+ scavenging activity (IC50, 1.41 µg/mL) and reducing power effect (6.05 mmol TE/g comp) were observed for myricetin (5). Conclusion: R. ungernii extract and isolated compounds could be a promising antioxidant for food and pharmaceutical industries.

scholarly journals Antibacterial, Antioxidant and Cytotoxic Properties of Crinum asiaticum Bulb Extract

2012 ◽  
Vol 28 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Md Atiar Rahman ◽  
Rumana Sharmin ◽  
Md Nazim Uddin ◽  
Md Sohel Rana ◽  
Nazim Uddin Ahmed
Keyword(s):  
Radical Scavenging ◽  
Diffusion Method ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative ◽  
Scavenging Effect ◽  
Ic50 Value ◽  
Radical Scavenging Effect ◽  
Dpph Scavenging ◽  
Crinum Asiaticum

Antibacterial effect of Crinum asiaticum bulb extract (1mg/disc) was tested on four Gram- positive and six Gram-negative bacteria by disc diffusion method using kanamycin (30 ìg/disc) as standard antibiotic disc. The bulb extract (250-1000mg/disc) showed significant zone of inhibition against all Gram-positive and Gram-negative bacteria ranging from 12-14 mm in diameter. Antioxidant potential of the same extract was evaluated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging method. The extract showed remarkable free radical scavenging effect (95.96%) providing the IC50 value of 5.62 for the bulb extract and 5.46 for ascorbic acid (standard antioxidant) at the concentration of 1000 ìg/ml. The bulb extract was found to be (LC50 value 94.06 ?g/ml) in Brine-Shrimp lethality test. DOI: http://dx.doi.org/10.3329/bjm.v28i1.11801 Bangladesh J Microbiol, Volume 28, Number 1, June 2011, pp 1-5

Sign in / Sign up

Export Citation Format

Share Document