scholarly journals Study of Ammonium Sulfide Surface Treatment for Ultrathin Cu(In,Ga)Se 2 with Different Cu/(Ga + In) Ratios

2020 ◽  
Vol 217 (19) ◽  
pp. 2000307
Author(s):  
Dilara Gokcen Buldu ◽  
Jessica de Wild ◽  
Thierry Kohl ◽  
Guy Brammertz ◽  
Gizem Birant ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Ammonium Sulfide

High Quality Non-Alloyed Pt Ohmic Contacts to P-Type GaN Using Two-Step Surface Treatment

1999 ◽  
Vol 595 ◽  
Author(s):  
Ja-Soon Jang ◽  
Seong-Ju Park ◽  
Tae-Yeon Seong
Keyword(s):  
Surface Treatment ◽  
Ohmic Contacts ◽  
Specific Contact Resistance ◽  
Transport Mechanisms ◽  
High Quality ◽  
Ammonium Sulfide ◽  
Current Voltage ◽  
Specific Contact ◽  
Thermionic Field Emission ◽  
P Type

AbstractTwo-step surface-treatment is introduced to obtain low resistance Pt contacts to ptype GaN. The first step is performed after the mesa etching process using buffered oxide etch (BOE) and ammonium sulfide [(NH4)2Sx]. This is followed by the second step using BOE. The Pt contact, which was treated sequentially using ultrasonically boiled BOE (10 min) and boiled (NH4)2Sx (10 min), produces a specific contact resistance of 3.0 (±3.8)×10-5 Ωcm2. However, the contact, that was simply BOE-treated, yields 3.1 (±1.1)×10-2 Ωcm2. This indicates that the two-step surface treatment is promising technique for obtaining high quality ohmic contacts to p-GaN. Investigation of the electronic transport mechanisms using current-voltage-temperature (I-V-T) data indicates that thermionic field emission is dominant in the surface-treated Pt contacts.

HgCdTe Epitaxial Layer Surface Treatment Using Ammonium Sulfide Before Passivation

2019 ◽  
pp. 453-460
Author(s):  
Rachna Manchanda ◽  
Varun Sharma ◽  
Chanchal ◽  
V. K. Singh ◽  
Anshu Goyal ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Epitaxial Layer ◽  
Layer Surface ◽  
Ammonium Sulfide

scholarly journals High Quality Non-Alloyed Pt Ohmic Contacts to P-Type GaN Using Two-Step Surface Treatment

2000 ◽  
Vol 5 (S1) ◽  
pp. 521-527
Author(s):  
Ja-Soon Jang ◽  
Seong-Ju Park ◽  
Tae-Yeon Seong
Keyword(s):  
Surface Treatment ◽  
Ohmic Contacts ◽  
Specific Contact Resistance ◽  
Transport Mechanisms ◽  
High Quality ◽  
Ammonium Sulfide ◽  
Current Voltage ◽  
Specific Contact ◽  
Thermionic Field Emission ◽  
P Type

Two-step surface-treatment is introduced to obtain low resistance Pt contacts to p-type GaN. The first step is performed after the mesa etching process using buffered oxide etch (BOE) and ammonium sulfide [(NH4)2Sx]. This is followed by the second step using BOE. The Pt contact, which was treated sequentially using ultrasonically boiled BOE (10 min) and boiled (NH4)2Sx (10 min), produces a specific contact resistance of 3.0 (±3.8)×10−5 Ωcm2. However, the contact, that was simply BOE-treated, yields 3.1 (±1.1)×10−2 Ωcm2. This indicates that the two-step surface treatment is promising technique for obtaining high quality ohmic contacts to p-GaN. Investigation of the electronic transport mechanisms using current-voltage-temperature (I-V-T) data indicates that thermionic field emission is dominant in the surface-treated Pt contacts.

Ammonium sulfide surface treatment of electrodeposited p-type cuprous oxide thin films

2014 ◽  
Vol 10 (2) ◽  
pp. 379-382 ◽  
Author(s):  
K. M. D. C. Jayathilaka ◽  
V. Kapaklis ◽  
W. Siripala ◽  
J. K. D. S. Jayanetti
Keyword(s):  
Thin Films ◽  
Surface Treatment ◽  
Cuprous Oxide ◽  
Oxide Thin Films ◽  
Ammonium Sulfide ◽  
P Type

Surface treatment with silver particles isles on Titanium cp: study of antimicrobial activity

2020 ◽  
Vol 9 (4) ◽  
pp. e27942662
Author(s):  
Patrícia Capellato ◽  
Cláudia Eliana Bruno Marino ◽  
Gilbert Silva ◽  
Lucas Victor Benjamim Vasconcelos ◽  
Rodrigo Perito Cardoso ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Surface Treatment ◽  
Titanium Surface ◽  
Silver Clusters ◽  
Silver Particles ◽  
Silver Deposition ◽  
Dispersed Particles ◽  
Significant Difference ◽  
Diffusion Assay ◽  
Antibacterial Potential

During the last decades, researchers have been growing the interest in surface treatment with an antimicrobial agent. Silver nanoparticles (AgNPs) are widely used in biomedical fields due to their potent antimicrobial activity. So, in this study was investigated silver particles (isles) coated on titanium surface for dental and orthopedic application. Silver particles coating process on titanium surface were performed via sputtering that is a plasma-assisted deposition technique with and titanium without treatment was applied as comparing standard. Plasma treatment parameters were optimized so that the result was not a thin film of Ag but dispersed particles of Ag on the Ti-cp surface. The alloy surfaces were investigated using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). In order to investigate antibacterial potential Staphylococcus aureus and Escherichia coli have been used at Agar diffusion assay. The results were analyzed by analysis of variance (ANOVA) in order to verify significant difference antimicrobial activity between samples that have shown no difference between the surfaces studied treatments. For silver deposition scattered particles (isles) over titanium surface for a 10-minute treatment, EDS revealed by silver clusters that the particles were not properly scattered onto surface, hence, the low effectiveness in antibacterial activity.

Effect of Plasma Surface Treatment on Surface Energy and Adhesion Properties for Cr Coating on Substrates

2013 ◽  
Vol 51 (10) ◽  
pp. 735-741
Author(s):  
Dong-Yong Kim ◽  
Eun-Wook Jeong ◽  
Kwun Nam Hui ◽  
Youngson Choe ◽  
Jung-Ho Han ◽  
...  
Keyword(s):  
Surface Energy ◽  
Surface Treatment ◽  
Adhesion Properties ◽  
Plasma Surface ◽  
Plasma Surface Treatment ◽  
Cr Coating

Experimental Study on Plasma Surface Treatment of Capacitors Film

2008 ◽  
Vol 128 (5) ◽  
pp. 339-342
Author(s):  
Dai Ling ◽  
Yin Ting ◽  
Lin Fuchang ◽  
Yan Fei
Keyword(s):  
Experimental Study ◽  
Surface Treatment ◽  
Plasma Surface ◽  
Plasma Surface Treatment

Basic Study on Surface Treatment of Functional Resin Film by Pulsed Atmospheric Microplasma

2010 ◽  
Vol 130 (10) ◽  
pp. 858-864 ◽  
Author(s):  
Kazuo Shimizu ◽  
Akira Umeda ◽  
Shuichi Muramatsu ◽  
Marius Blajan
Keyword(s):  
Surface Treatment ◽  
Basic Study ◽  
Resin Film

Basic Study on Surface Treatment of GaN by Pulsed Atmospheric Microplasma

2012 ◽  
Vol 132 (3) ◽  
pp. 270-271
Author(s):  
Kazuo Shimizu ◽  
Yuta Noma ◽  
Marius Blajan ◽  
Shigeya Naritsuka
Keyword(s):  
Surface Treatment ◽  
Basic Study
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