-. Personal contact. cjw0114@gmail.com1. Education -. Master degree at Sungkyunkwan University department of electronic, electrical and computer engineering2. Experience (2013~Now, Working at LG Electronics) a. Advance Development group at LGE Seoul R&D center. (2013. 02~2015. 08) -. 1.4nm Tunnel Oxide, Poly-Si junction & cell process development. -. Advanced technology studying of back contact solar cell process(LPCVD, Furnace, ALD, PECVD) b. Product Development group. (2015. 08~2017. 02) -. Set up mass production system for back contact solar cell -. Mass production technology studying of back contact solar cell process(LPCVD, Furnace, ALD, PECVD) c. Mass production eng. group. (2017. 02~2020.08) -. Improving production yield/capa. Cost reduction. -. Production reliability studying of anti-UV, low sun reduction from mass production tech. -. Analysis solar cell structure with TEM, SIMS. Mass production engineering with PECVD & wet etching/cleaningd. DX(Digital transform) production eng. group. (2020. 08~Now) -. Tranformated solar mass production to smart factory project. -. Production data analyzing with CTQ/CTP. (daily, monthly, yearly) -. Best performance path search. Hidden performance improve parameter searching of production big data. -. Prevent to abnormal events & safety problems. -. Tool: Python, R, Splunk SQL -. Library: Pandas-numpy, linear regression, random forest, sankey diagram, dtale3. Skills a. Process -. LPCVD & Furnace working experience from lab scale to mass production -. PECVD & Wet etching/cleaning mass production engineer skills -. Production reliability analysis of damp-heat, UV, low sun power reduction. -. Machine learning analysis on solar production CTP-CTQ (w. Python, R, Splunk)b. Language: Fluent with English & Korean. Minor Chinese5. SCI / Patent a. SCI -. Improved Hydrogen Capping Effect in n-Type Crystalline Silicon Solar Cells by SiN(Si-Rich)/SiN(N-Rich) Stacked Passivation (1st author) -. A Simulation Study on the Shallow Emitter Sheet Resistance for Selective Emitter Crystalline Silicon Solar Cell with Screen Printed Etched Back Process (1st author) b. Patetn -. KR101846444B1: UV stability improvement method of back contact solar cell -. KR101828422B1: Tunnel oxide(<1.5nm) & poly mass production process -. KR101788163B1: Advance patent for back contact solar cell with silicon germanium