• Extensive knowledge in solar cell and photodetector modeling, fabrication, characterization, and optimization.
• Expertise with research on ZnO thin film deposition, doping, characterization and electrical and optical properties modification to improve the performance of its applications in optoelectronic devices.
• Proficient in thin film evaporation, sputtering and deposition; device isolation, contacts, metallization and characterization techniques, +5 years related experiences.
• Years of device development strengthened my ability to solve real problem and to be purpose-driven
• Supervisory experience in clean room
• Experience as a Field Application Engineer at HITACHI leading sales team in product promotion and customer development
EDUCATION
University at Buffalo, The State University of New York
Doctor of Philosophy in Electrical Engineering, Feb. 2010, GPA -3.9/4 -
Dissertation: “ZnO thin film deposition, characterization, and its applicationsâ€
Master of Science in Electrical Engineering, Sept. 2004, GPA - 3.7/4 -
Project: “Silicon thin film solar cell: PC1D modelingâ€
Feng Chia University, Taiwan
Bachelor of Science in Electronics Engineering, Jun.1999
RELAVENT EXPERIENCES
Research Assistant, June.2006~present
University at Buffalo, The State University of New York
• Designed and conducted fabrication process for metal-semiconductor-metal photodetectors (MSM-PD) and photovoltaic devices, with focuses on Schottky junction, heterojunction silicon based solar cell
• Conducted PC1D and AMPS1D modeling of pn junction and heterojuntion structure solar cells
• Improved efficiency and spectral response in ultra violet spectral range of heterojunction solar cell by using ZnO/Si, modifying surface morphology and adding thin buffer layer in the junction
• Deposited, metalized, and characterized optical and electrical properties of ZnO and ZnO:N thin films by various processes including radio frequency (RF) sputtering, laser-assisted molecular-beam deposition and nitrogen ion implantation
• Improved performance of photodetectors by increasing conductivity, improving crystalline, enhancing band gap photoluminescence (PL), decreasing dark current and defect PL of ZnO thin film through modifying deposition conditions, applying various post anneals and nitrogen doping
• Analyze the annealing effects and nitrogen effects of ZnO thin film and its applications in MSM-PD and solar cells.
• Investigate current transport mechanisms of optoelectronics devices
• Proficient clean room techniques: PECVD, thermal evaporator, DC plasma evaporator, E-beam evaporator,
RF sputtering system, mask aligner, photomask fabrication, photolithography, wet etching, RIE, tube furnace annealing, rapid thermal annealing, muffle furnace annealing
• Proficient characterization techniques: ellipsometry, 4-point-probe, hot-probe, profilmeter, SEM, AFM, XRD,
I-V(-T), C-V, spectral response, pulse response, photoluminescence measurements
• Software: PC1D, AMPS1D, ORIGIN, Microsoft Office.
Teaching Assistant, Sep. 2004~Dec.2009
University at Buffalo, The State University of New York
• Advanced courses: EE455/555 Photonic Devices; EE453/553 Microelectronic Fabrication lab.; EE415/515 Micro-electro-mechanical Systems (MEMS); EE494/594 Consumer Optoelectronics
• Graded, instructed and tutored in office hours and question and answer session.
• Instructed and demonstrated PC1D modeling for solar cell project.
• Taught and guided Schottky junction solar cell fabrication and characterization.
• Tutored ANSYS simulation for piezoelectric actuator.
• Supervised graduate/ undergraduate students for group projects and instructed visiting scholars on equipments in clean room.
• Conducted demonstration and guided tours in micro-fabrication lab for the open house to students and university professors each semester.
Field Application Engineer ( F. A. E.), Jan. 2000~Oct. 2001
Product Marketing Department
Hitachi Semiconductor, Taipei, Taiwan
• Technical support and trouble shooting for compact flash (CF) card.
• Participated in CF card formatting tool development to increase production efficiency for customers.
• Led 5 person sales team to promote flash memories and controller in Taiwan market.
• Market analyzed, predicted and reported to headquarters in Japan.
• Promoted new products in Taiwan and developed new customers
PEER-REVIEWED JOURNAL PUBLICATIONS
• Tingfang Yen, Alan Haungs, Sung Jin Kim, Alexander Cartwright, and Wayne A. Anderson, “Effect of Post Deposition Processing on ZnO Thin Films and Devices†Journal of Electronic Materials, published online, Nov. 24 2009.
• Tingfang Yen, Michael DiNezza, Alan Haungs, Sung Jin Kim, Wayne A. Anderson, and Alexander N. Cartwright “Effects of nitrogen doping of ZnO during or after deposition†J. Vac. Sci. Technol. B Volume 27, Issue 4, pp. 1943-1948, July 2009
• Tingfang Yen, Dave Strome, Sung Jin Kim, Alexander N. Cartwright, and Wayne A. Anderson “Annealing Studies on Zinc Oxide Thin Films Deposited by Magnetron Sputtering†Journal of Electronic Materials, Vol. 37, No. 5, 2008
CONFERENCE PROCEEDINGS AND PRESENTATIONS
• Tingfang Yen, Alan Haungs, Sung Jin Kim, Alexander Cartwright, and Wayne A. Anderson “Current Transport Mechanisms for MSM-Photodetectors on ZnO:N Thin Films†Materials Research Society , 2009 Fall meeting, Boston, MA, Nov 30-Dec 4, 2009
• Tingfang Yen, Michael DiNezza, Alan Haungs, Sung Jin Kim, Wayne A. Anderson, and Alexander N. Cartwright “ ZnO:N preparation and post annealing for UV photodetectors†32nd Annual EDS/CAS Activities in Western New York Conference Nov 5, 2008
• Tingfang Yen, Michael DiNezza, Alan Haungs, Sung Jin Kim, Wayne A. Anderson, and Alexander N. Cartwright “Effects of Nitrogen Doping of ZnO During or After Deposition†The 5th workshop on ZnO and Related Materials, Ann Arbor, MI. Sep 22-24, 2008.
• Peter T. Mersich, Tingfang Yen, and Wayne A. Anderson, “Hetero-interface Modification in Thin Film ZnO/Si Solar Cells†Photovoltaic specialists, conference 2008 IEEE 33rd
• Tingfang Yen, Dave Strome, Sung Jin Kim, Alexander N. Cartwright, and Wayne A. Anderson “Annealing Studies on Zinc Oxide Thin Films Deposited by Magnetron Sputtering†TMS Materials Conference (EMC), Notre Dame, Indiana, June20-June22, 2007
• Tingfang Yen, Dave Strome, Sung Jin Kim, Michael DiNezzaa, Alexander N. Cartwright, and Wayne A. Anderson “Effect of Fabrication Variables on the Performance of Zinc Oxide Metal-Semiconductor- Metal Photodetectors†Materials Research Society , 2007 Fall meeting, MA, Nov 26-30, 2007
• Tingfang Yen, Meiya Li, Nehal Chokshi, Sung Jin Kim, Alexander N. Cartwright, Yongwoo Jeong, and Wayne A. Anderson “Analysis and Applications of ZnO Semiconductor Films Deposited by Laser and Sputtering Techniques†Material Research Society , 2006 Fall meeting, MA, Nov 27-Dec 1, 2006
• Meiya Li, Tingfang Yen, Nehal Chokshi, Robert L. DeLeon, Gary Tompa, and Wayne Anderson “Zinc Oxide Thin Films Deposited by Reactive RF Sputtering for Metal-Semiconductor-metal Photodetectors and Solar Cells†TMS Electronic Materials Conference, June 28-30, 2006
• Tingfang Yen, Meiya Li, Nehal Chokshi, Robert L. DeLeon, Joondong Kim, Gary Tompa and Wayne A. Anderson “ Current Transport in ZnO/Si Heterojuntions for Low- Cost Solar Cells†Photovoltaic Energy Conversion, Conference Record of the 2006 IEEE 4th World Conference, May 7-12, 2006
HONORS/AWARDS AND PROFESSIONAL AFFILIATION
Member of the American Solar Energy Society (ASES) 2009~present
Member of the American Association for the Advancement of Science (AAAS), 2008~present
Member of Who’s Who in America, March 2009~present
Member of Material Research Society , 2006~present
Treasurer of Taiwan Graduate Student Association, Fall 2003~Spring 2004.
Treasurer of Graduate Student Tennis Club, Fall 2006~ Spring 2007.
Graduate Student Association grant, June 2006
Teaching Assistantship and Research Assistantship, University at Buffalo, Sep. 2004 ~ present
NukeJobs is a nuclear jobs board that provides nuclear job seekers access to international directories of Nuclear Employers, Nuclear Resumes and Nuclear Jobs such as Nuclear Engineer Jobs, Nuclear Construction Jobs, Nuclear Power Plant Jobs, Nuclear Medicine Jobs, Nuclear Pharmacy Jobs, Nuclear Security Jobs, Nuclear Physics Jobs, Nuclear Reactor Jobs, Nuclear Material Jobs, Nuclear Safety Jobs, and Nuclear Waste Jobs.