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1,763 results on '"PARK, YOUNG‐BAE"'

13. Brittle Fracture Behavior of Sn-Ag-Cu Solder Joints with Ni-Less Surface Finish via Laser-Assisted Bonding.

Author

Han, Seonghui, Han, Sang-Eun, Lee, Tae-Young, Han, Deok-Gon, Park, Young-Bae, and Yoo, Sehoon

Subjects
SOLDER joints, BRITTLE fractures, HIGH power lasers, INTERMETALLIC compounds, ELECTRONIC packaging
Abstract

In this study, we investigated the brittle fracture behavior of Sn-3.0Ag-0.5Cu (SAC305) solder joints with a Direct Electroless Gold (DEG) surface finish, formed using laser-assisted bonding (LAB) and mass reflow (MR) techniques. Commercial SAC305 solder balls were used to ensure consistency. LAB increases void fractions and coarsens the primary β-Sn phase with higher laser power, resulting in a larger eutectic network area fraction. In contrast, MR produces solder joints with minimal voids and a thicker intermetallic compound (IMC) layer. LAB-formed joints exhibit higher high-speed shear strength and lower brittle fracture rates compared to MR. The key factor in the reduced brittle fracture in LAB joints is the thinner IMC layer at the joint interface. This study highlights the potential of LAB in enhancing the mechanical reliability of solder joints in advanced electronic packaging applications. [ABSTRACT FROM AUTHOR]

Published
2024
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14. Structural, Optical, Electrical, and Nanomechanical Properties of F-Doped Sno2 Fabricated by Ultrasonic Spray Pyrolysis.

Author

Kim, Jaewon, Kim, Gahui, and Park, Young-Bae

Abstract

Transparent conductive oxides (TCOs) are in high demand by optoelectronic devices such as light-emitting diodes, phototransistors, touchscreens, solar cells, and low-emissivity windows. Tin-doped indium oxide (ITO) material is the most predominant in the market and is utilised among the various TCO materials. However, the lack of raw materials and the high cost of indium materials have necessitated the exploration of cost-effective TCOs that can serve as viable alternatives without compromising the desired optical and electrical properties. Tin oxide (SnO2) films emerge as a promising candidate, offering several benefits, including abundant material sources, inexpensiveness, and non-toxicity. It anticipates producing a higher visible transmittance, excellent electrical conductivity, and good mechanical properties compared to ITO. Moreover, SnO2 can increase its electrical conductivity by introducing representative dopant elements such as Sb, and F. However, structural, optical, and mechanical properties can affect additional dopant elements. Herein, we have demonstrated fluorine-doped tin oxide (FTO) thin films as a function of F dopant concentration by ultrasonic spray pyrolysis. The FTO thin films achieved excellent properties for FTO coatings such as polycrystalline structure, electrical conductivity (ρ = 9.1 × 10–5 Ω cm), transmittance in the visible region (average visible transmittance up to 85.0%, with peak values of 96.5%) with a wider band gap between 3.80 and 4.28 eV. The increasing elastic modulus and hardness are related to significant grain boundaries, reaching the highest values of 154.5 ± 18.6 and 12.3 ± 3.6 GPa, respectively. The measured interface adhesion between SnO2/Si substrate is 9.32 J/m2. [ABSTRACT FROM AUTHOR]

Published
2024
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26. Self‐Formation of a Ru/ZnO Multifunctional Bilayer for the Next‐Generation Interconnect Technology via Area‐Selective Atomic Layer Deposition

Author

Mori, Yuki, primary, Cheon, Taehoon, additional, Kotsugi, Yohei, additional, Kim, Youn‐Hye, additional, Park, Yejin, additional, Ansari, Mohd Zahid, additional, Mohapatra, Debananda, additional, Jang, Yujin, additional, Bae, Jong‐Seong, additional, Kwon, Woobin, additional, Kim, Gahui, additional, Park, Young‐Bae, additional, Lee, Han‐Bo‐Ram, additional, Song, Wooseok, additional, and Kim, Soo‐Hyun, additional

Published
2023
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42. Tailored Self-Assembled Monolayer using Chemical Coupling for Indium–Gallium–Zinc Oxide Thin-Film Transistors: Multifunctional Copper Diffusion Barrier

Author

Lee, Seungmin, primary, Lee, Sanghyeon, additional, Lee, Minkyu, additional, Rho, Sung Min, additional, Kim, Hyung Tae, additional, Won, Chihyeong, additional, Yoon, Kukro, additional, Kwon, Chaebeen, additional, Kim, Juyoung, additional, Park, Geun Chul, additional, Lim, Jun Hyung, additional, Park, Joon Seok, additional, Kwon, Woobin, additional, Park, Young-Bae, additional, Chun, Dong won, additional, Kim, Hyun Jae, additional, and Lee, Taeyoon, additional

Published
2022
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47. The impact of residual coronary lesions on clinical outcomes after percutaneous coronary intervention: Residual SYNTAX score after percutaneous coronary intervention in patients from the Efficacy of Xience/Promus versus Cypher in rEducing Late Loss after stENTing (EXCELLENT) registry

Author

Park, Kyung Woo, Kang, Jeehoon, Kang, Si-Hyuck, Ahn, Hyo-Suk, Kang, Hyun-Jae, Koo, Bon-Kwon, Chae, In-Ho, Youn, Tae-Jin, Oh, Byung-Hee, Park, Young-Bae, Kandzari, David, and Kim, Hyo-Soo

Published
2014
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49. Automated Keyword Extraction Using Category Correlation of Data

Author

Woo, Young-Ho, Nam, Do-Hyun, Hur, Tai-Sung, Park, Young-Bae, Huh, Woong, Woo, Yo-Seop, Min, Hong-Ki, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Gavrilova, Marina L., editor, Gervasi, Osvaldo, editor, Kumar, Vipin, editor, Tan, C. J. Kenneth, editor, Taniar, David, editor, Laganá, Antonio, editor, Mun, Youngsong, editor, and Choo, Hyunseung, editor

Published
2006
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