Electrical Engineering

Ligang Ye

********@*****.***

Phone: 419-***-****

**** * ********* ***. ***. 208

Napoleon, OH 43545

Objective:

To apply my knowledge and experience in materials, semiconductors and photovoltaics to assist in the

development or deployment of new technology

Education:

Professional Science Master’s Degree in Photovoltaics Aug 2011 to Jul 2013

The University of Toledo (UT), Toledo, Ohio, USA

Bachelor of Engineering, Materials Science and Engineering Sep 2007 to Jun 2011

Wuhan University of Technology (WHUT), Wuhan, China

Bachelor of Arts, English Sep 2009 to Jun 2011

Huazhong University of Science and Technology (HUST), Wuhan, China

Employment History:

ISOFOTON North America, Inc. (Napoleon, Ohio) Jan 2013 to Present

Worked in the Department of Quality and Process as a full-time intern and then Quality Technician.

Flash tester verification is measured three times a day to make sure the flash tester is reliable.

Statistical Process Control (SPC) chart is drawn daily to track the trend of electrical parameters such as

short circuit current, open circuit voltage, maximum power, fill factor, cell and module efficiencies,

and etc. Weekly data analysis and monthly solar cell to module (CTM) loss analysis are written to

understand and control the whole process and production. Flash master excel sheet is made to act as the

company database. VLOOKUP function and IF function are used to look up and populate data from the

flash master excel sheet automatically and to compose flash reports for customers. Key Performance

Indicators (KPI) graphs are drawn daily. Helped pack and ship solar modules to Laredo, TX, Puerto

Rico, Japan, and etc. Helped the company solve the solder bleed problem. Helped the company get

TÜV Rheinland certified, during which my responsibilities mainly lie in Pull Test and Flash Test.

Learnt how to operate and control Komax Solar stringers and Reis robots such as Komax Solar

Stringers, Trimmer Robot, Flash Tester, Hi-Pot, EL Tester, and etc.

Luoyang Monocrystalline Factory, Luoyang Glass Corporation and Luoyang Refractory

Materials Factory Jun 2010 to Jul 2010

Worked mainly in the area of inorganic materials as an intern. Made float glass by floating molten

glass on a bed of molten tin. Worked on the Czochralski process assembly lines to make

monocrystalline. Also participated in the workshop to make refractory materials.

Research Experiences:

Wright Center for Photovoltaics, UT Aug 2011 to Jan 2013

Deposited p-i-n a-Si:H solar cells on glass using PECVD and measured the optical characterization of

some silicon samples and silicon nitride (SiNx) samples using Infrared Variable Angle Spectroscopic

Ellipsometer (IR-VASE) and Visible Variable Angle Spectroscopic Ellipsometer (V-VASE) under the

guidance of Dr. Nikolas Podraza. Spectroscopic ellipsometry software WVASE32 is used to analyze

the experimental data. Two models are built to fit the experimental data in visible and infrared range.

Different oscillators are chosen to build the models. Comparing the results of visible and infrared range,

optical characterization such as index of refraction (n) and extinction coefficient (k) can be obtained.

Loading the data into Origin, curves for a series of complex index of refraction (N = n + ik) can be

plotted. Reports about optical characterization of silicon nitride samples were written for some

companies and institutes such as Applied Materials (AMAT) and North Carolina State University

(NCSU).

Wuhan University of Technology Mar 2010 to Dec 2010

Fabricated electrical circuits on polymer materials, especially PET using Vacuum Ultraviolet

Lithography (VUV) with the help of Dr. Zhongkui Wu. The films served as the template for the

selective Electroless deposition of copper structures. Water contact angle and X-ray photoelectron

spectroscopy (XPS) were measured. Micron copper patterns were observed also.

Key Laboratory of Silicate Materials Science and Engineering, WHUT Aug 2009 to Jun 2010

Fabricated dye-sensitized solar cells (DSSC) under the circumstances of glycol and NH4F.

Nano-tubularly arranged TiO2, which forms into a highly porous structure, was produced by

anodic-oxidation. Field Emission Scanning Electron Microscopy (FESEM) and SEM were used to

observe the porous structure TiO2. Some unwanted TiO2 particles surrounding on the top of the

nanotube were eliminated.

State Key Laboratory for Materials Synthesis and Processing, WHUT Sep 2008 to Aug 2009

Proton Exchange Membranes (PEM) were made from some composite membranes. Proton

conductivity and methanol permeability were tested.

Honors and Awards:

Award for Studying Progress during the academic year 2007 to 2008

Third Prize for Band C in 2010 National English Contest for College Students

National Computer Rank Examination Certificate in Grade 2 of C Language

Reports and Publication:

L. Ye, N. Podraza. Optical Characterization of Silicon Nitride for NCSU, November 14, 2012

N. Podraza, L. Ye, M. Junda, L. Karki. Optical Characterization of amorphous Silicon for Air Products

Boat, July 23, 2012

L. Ye, N. Podraza. Optical Characterization of Silicon Nitride for AMAT, July 17, 2012

J. Yang, Z. Wu, S. Li, H. Tang, L. Ye. Fabrication of Copper Patterns on PET Films by Selective

Electroless Copper Planting[J].Surface Technology,2011,40(3):26-28,43.

http://lib.cqvip.com/read/detail.aspx?ID=37953455#

Volunteer work:

Organized and presented department booth in Greentown Oct 26, 2012

Organized and presented department booth in the Student Union of UT Aug 17, 2012

Joined the teaching team to tutor senior high students. Weekends of Dec 2009 to Jan 2010

Joined the China Youth Volunteer Association to do some community services. Jun, 2008

Technology Summary:

Software: Real Ease (WVASE32), Microsoft Office, C++, AutoCAD, Matlab, Origin, LabView, Igor

Pro.

Hardware: XRD, SEM, TEM, J/V Characterization, Six Sigma

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