Based on the mass production process engineer experience, fully understand the entire process of Foundries. Executed the qualification of silicon photonics technologies of GlobalFoundries. Qualification plan for silicon photonics components and test reliability stress to project the parts lifetime and safe operation area. Co-works with process integration, TCAD simulation, device and R&D team and develop and qualify the new silicon photonics technologies. • Development of qualification plan… Show more Based on the mass production process engineer experience, fully understand the entire process of Foundries. Executed the qualification of silicon photonics technologies of GlobalFoundries. Qualification plan for silicon photonics components and test reliability stress to project the parts lifetime and safe operation area. Co-works with process integration, TCAD simulation, device and R&D team and develop and qualify the new silicon photonics technologies. • Development of qualification plan for silicon photonics components.• Qualification of GlobalFoundries silicon photonics technologies. (90WG, 45SP2/3, 45SPCLO, 45SPCLO-B)• Specialty in Ge Photodetector qualification plan and reliability model development (Optical/Electrical stress method development)• Macro design for photonics reliability test. (Electrical and Electrical/Optical reliability macro)• Hands-on experience in qualification testing including damp heat (DH), thermal cycle (TC), high temperature storage (HTS), temperature/humidity with bias (THB). • Ongoing reliability test (ORT) plan development • Silicon photonics components degradation model development and lifetime projection (GePD Gradual degradation and Catastrophic failure model development, Presented at OFC 2020 San Diego)• Understand Telcordia spec. for optical component reliability and working as a member of JEDEC working group and contributing the development of silicon photonics reliability standard. Show less

For better process yield at semiconductor mass production, set optimal and reliable reactive ion etch recipe and processes. Executed systematic defect analysis and equipment diagnostics for the reduction of failure. Communicated with the 2nd source suppliers for lowering production cost. RIE is the key process for cutting-edge semiconductor technology below 10nm.• Reactive Ion Etch of dielectric and metal at BEOL of logic chip. • Statistical process control of RIE for BEOL metal… Show more For better process yield at semiconductor mass production, set optimal and reliable reactive ion etch recipe and processes. Executed systematic defect analysis and equipment diagnostics for the reduction of failure. Communicated with the 2nd source suppliers for lowering production cost. RIE is the key process for cutting-edge semiconductor technology below 10nm.• Reactive Ion Etch of dielectric and metal at BEOL of logic chip. • Statistical process control of RIE for BEOL metal interconnection. • Optimization of MIM etch process for high productivity.• Development of RIE process for parallel-connected advanced MIM capacitor. Show less

After joining in Stion, Dongho set the electrical and optical characterization environment and applied the methods to develop the CIGS Solar module (65 cm x 165 cm) for solar power plant with 140 W~150 W and solar shingle module (65 cm x 30 cm) for roof tile with 20 W. • Set the characterization environment for electrical and optical analysis in the R&D lab and defined the density of the defect state of the current product. • Process Development of Thin Film Deposition (Sputtering… Show more After joining in Stion, Dongho set the electrical and optical characterization environment and applied the methods to develop the CIGS Solar module (65 cm x 165 cm) for solar power plant with 140 W~150 W and solar shingle module (65 cm x 30 cm) for roof tile with 20 W. • Set the characterization environment for electrical and optical analysis in the R&D lab and defined the density of the defect state of the current product. • Process Development of Thin Film Deposition (Sputtering, MOCVD, Evaporation)• Designed and developed the process of 20W solar shingle for roof tile • Developed the ETL/HTL deposition process at perovskite solar cell. Show less

Development of the business plan for CIGS solar cell mass production and production cost analysis based on the R&D experience in Samsung SDI. Proposals for the government renewable energy project and build a development plan for characterization and reliability environment. • Characterization and Reliability environment proposal for photovoltaic development. • Develop a plan for solar energy business. • Cost Analysis of Solar cell mass production

Strategically developed product design to accommodate maximum functionality and generate aesthetic appeal. Researched methods for innovative thin film deposition, necessary in cost reduction and high yield production. Ensured the guaranteed and improved performance for the product release. Executed systematical electronics and material sciences in contributing to a reduced defect rate and in producing the high quality film for better performance. Developed new analysis methods, executed at the… Show more Strategically developed product design to accommodate maximum functionality and generate aesthetic appeal. Researched methods for innovative thin film deposition, necessary in cost reduction and high yield production. Ensured the guaranteed and improved performance for the product release. Executed systematical electronics and material sciences in contributing to a reduced defect rate and in producing the high quality film for better performance. Developed new analysis methods, executed at the production line, prescreening the defects in solar panels. Optimized vacuum deposition, reaction condition and wet process for better performance upon receiving results from film characterization.• Lead the development of an innovative high efficiency CIGS solar cell, acting as an electrical analysis specialist in the photovoltaic development team. • Developed the Optimum Process Condition, significantly impacting the performance of produced solar panels and resulting in cost reduction, high yields and an improved production system.• Achieved a world record for efficiency through the CIGS Solar Mini Module at the highest efficiency at 17.9% within a 300x300㎟ mini module without utilizing toxic cadmium or the included buffer layer; performance certified by Korea Testing Laboratory (KTL) in 2012.• Achieved a world record for efficiency of CIGS Commercial Module from mass production line for the highest output power (230W) and efficiency (16%) at 900x1600㎟ in the commercial module, manufactured at mass production line; certified performance by TÜV in 2013.• Encouraged communication within the collaborative setting, while deriving the best possible solution within the problem-solving process. Show less

Dongho was a Research Assistant at SUNY, a state university, dedicated to excellence in science and engineering, while noted as the top research university in United States. He engaged in techniques relating to C2ZTS4 Solar Cells and Spray Chemical Vapor Deposition. This is essential in low cost mass production technology. His research resulted in oral presentation at the SPIE Conference in 2011. During his tenure, he sensitized solar cells under CdS/CdSe cascade-structured Quantum-Dot… Show more Dongho was a Research Assistant at SUNY, a state university, dedicated to excellence in science and engineering, while noted as the top research university in United States. He engaged in techniques relating to C2ZTS4 Solar Cells and Spray Chemical Vapor Deposition. This is essential in low cost mass production technology. His research resulted in oral presentation at the SPIE Conference in 2011. During his tenure, he sensitized solar cells under CdS/CdSe cascade-structured Quantum-Dot techniques. He also analyzed the x-ray structure of a-GaN/r-plane Sapphire, while providing deposit methods of high quality GaN layer on sapphire substrate. He also characterized InAlAs/GaAs metaphoric buffer layers by x-ray with reciprocal space mapping technique.Dongho characterize the structure of layers with III-V compound semiconductors with reciprocal space mapping XRD method and published on Jounal of applied physics (2007) as first author. The characterization of reliability for Al2O3/GaAs MOSFET, Dongho published a journal article on microelectronic reliability, as a contribution to the scientific world. Before becoming a Research Assistant, he was a Teaching Assistant at SUNY, assisting the professor with the instruction and tutoring of students in microelectronic circuitry. He taught students how to build and simulate circuitry with Pspice. He was also responsible for the grading and project evaluation for:✪ “Introduction to Nanoelectronics” ✪ “Nano Structure Materials”✪ “Circuit for Sensors.”He consulted with students in the preparation of project presentation, guiding student ability to utilize and deliver research versus theory. Show less