This document is a resume for Wei Wang, who received his Ph.D. in Physics from the University of Houston in 2015. His research focused on fabricating and designing sub-wavelength periodic textures to improve light harvesting in multi-junction solar cells. He has over 8 years of experience in modeling, fabricating, and characterizing photovoltaic materials and devices. He has published 8 first-author papers and presented at over 20 international conferences. His skills include growth and processing of solar cell materials as well as optical and electrical characterization techniques.

1. Wei Wang
Center for Advanced Materials, Science & Research 1, 3507 Cullen Blvd Room 724, Houston, TX, 77204
(832)572-6639 wangweiivy55@gmail.com
EDUCATION
UNIVERSITY OF HOUSTON Houston, TX
Ph.D. in Physics Advisor: Dr. Alex Freundlich GPA:3.5/4.0 2013-15
Dissertation: "Fabrication and Design of Sub-wavelength Periodic Textures for Improving Light Harvesting
in Multi-junction III-V Photovoltaics".
Master in Physics Advisor: Dr. Alex Freundlich GPA:3.5/4.0 2009-12
Thesis: "Optimizing Design of 2D Sub-wavelength Gratings for Antireflection Coatings of Multi-
junction III-V Concentrator Cells".
UNIVERSITY OF SCIENCE & TECHNOLOGY BEIJING Beijing, China
Bachelor in Physics Advisor: Dr. Fanping Meng GPA: 84/100 2004-08
Thesis: "First-principles study of structural the properties of BaTiO3 and SrRuO3".
WORK & RESEARCH EXPERIENCE
UNIVERSITY OF HOUSTON 2009-now
Modeling
 Mathematical modeling of textured dielectric with various morphology designs.
 Development of program which optimizes material candidates & texture designs for anti-reflective
textures, with improvement in anti-reflection and angular tolerance properties.
 Comparing experimental EQE with models from self-coded drift diffusion and effective medium
approach.
 Development of program to calculate optimal installation criteria of solar panels, based on position
and peak energy requirement time, with conventional planer or novel graded texture ARCs.
 Modeling angular effects compared with data from different installed solar cells technologies.
Fabrication & Characterization
 Full process from plain wafer into functional devices (i.e. photolithography, front back metallization,
mesa etching, thermal vacuum evaporation, sub-wavelength texturing).
 Optimizing recipe for back incoherent reflector by laser interference lithography & wet etching.
 Wet etching of III-Vs and dielectrics, insuring desired sub-micron scale morphology.
 Development of III-V ultra-thin solar cell lift-off technique.
 Characterization of quantum well solar cells. (QE, biased PL, IV).
 N-plasma source on MBE to grow dilute N III-V materials
 Au electroplating on semiconductor.
Designing and setting up experiment (original)
 Angular-dependent reflectivity measurement.
 Biased photoluminescence.
 Fast access to angular dependent I-V characterization.
Miscellaneous
 Reclamation of previously out of work equipment (i.e. reflectance and thermal evaporation chamber).
 Presenting research work at 20+events, with 8 orals at international conferences and 8 first-author
publications (with 1 invited talk).
 Routine maintenance of lab facilities -- with improvement in convenience and security.
 Mentoring graduates, undergraduates, high school teachers, and summer interns in experimental and
simulation methods.
 Grading courses, preparing exams, and answering questions in physics courses (i.e. University
Physics I & II, statistic & thermal physics).
UNIVERSITY OF SCIENCE & TECHNOLOGY BEIJING 2004-2008
 Using VASP software to study the properties of perovskite (i.e. BaTiO3 and SrRuO3) by first principles.
 Values from calculation are consistent with experimental values, with <1% error compared to
experimental values found using L(S) DA method.

2.  Analysis of experimental data from oil field using fluid dynamics; the work was published in a journal
paper.
SKILLS
Experimental Growth & processing: Vacuum thermal deposition, Selective & non-selective etching,
Photolithography, Lift off (ultra-thin devices), Laser interference lithography,
Electroplating, MBE, N-plasma
Characterization: Angular-dependent reflectance, Scanning electron microscope (SEM),
Profilometer, (Biased) Photoluminescence, I-V characterization,
Curve tracer, IQE/EQE quantum efficiency measurement,
Solar simulator, Energy dispersive spectroscopy (EDS), mass spectrum
Computational Programming Languages: MATLAB, C, Python
Miscellaneous: Origin, SRIM, VASP, Microsoft office
Languages English (fluent) and Mandarin Chinese (native)
AWARDS & HONORS
 Best poster award at 43rd
IEEE PVSC conference. 2016
 Outstanding poster award at the 2nd
annual NSF/DOE meeting of National Engineering research Centers
on Quantum Engineering for Sustainable Solar Technologies (QESST) meet. 2013
 Best under-graduate bachelor thesis award in physics department at USTB. 2008
 First award in Progress in Science and Technology in Yangtze University. 2007
 Top student leader finalist, among 400 leaders managing total of 10,000+ students in campus. 2007
ROLES & ACTIVITIES
UNIVERSITY OF HOUSTON
 Sub-area chair of Advanced Light Management in IEEE 44th
PVSC in 2017.
 Member of SPIE (International Society of Optical Engineering) and IEEE.
 Student representative of University of Houston, in QESST Engineering research center, having
collaboration between 10+ universities and research institutions.
 Involved in numbers of Outreach Activities regarding sustainable energy and motivating public for science
interests.
UNIVERSITY OF SCIENCE & TECHNOLOGY BEIJING
 Student leader for 3 years among 30 students in my class, managed different events from planning to
execution.
 Developed team spirit in class, provided guidance to low scoring classmates, and helped my class of win
many awards by organizing group studies.
Note: transcripts and detailed explanation on projects have been worked on are available upon request to
condense this resume.

3. PUBLICATIONS & INTERNATIONAL PRESENTATIONS
 W. Wang, A. Mehrotra, A. Alemu, A. Freundlich, “Minimizing solar cell reflection loss through surface texturing and
implementation of 1D and 2D subwavelength dielectric gratings”, Proc. of SPIE 9743, Physics, Simulation, and
Photonic Engineering of Photovoltaic Devices, Vol. 8256, 82561A (2012), DOI:10.1117/12.911826.
 W. Wang, A. Freundlich, “Optimizing design of 2D sub-wavelength ARC gratings for multi-junction III–V concentrator
cells”, Photovoltaic Specialists Conference (PVSC), 38th
IEEE (2012), pp: 2111 – 2116, DOI:
10.1109/PVSC.2012.6318014.
 W. Wang, P. Narchi, A. Freundlich,“Simulation and development of sub-wavelength textured ARCs for CPV
applications”, Proc. of SPIE 9743, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices, Vol.
8620, 86200P (2013), DOI: 10.1117/12.2004612.
 W. Wang, A. Freundlich, “Simulation and Development of Sub-wavelength Grated Dielectric ARCs for CPV
Applications”, PVSC, 2013 39th
IEEE, pp 3049-3052, DOI: 10.1109/PVSC.2013.6745104.
 W. Wang, A. Freundlich, “Design of sub-wavelength dielectric antireflective grading for multijunction concentrator
photovoltaics”, Proc. of SPIE 9743, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices, Vol.
8981-32 (2014) DOI:10.1117/12.2040431.
 W. Wang, A. Freundlich, “Design and Development of Back Reflectors for Improved Light Coupling and Absorption
Enhancement in Thin MQW Solar Cells”, Proc. of SPIE 9743, Physics, Simulation, and Photonic Engineering of
Photovoltaic Devices, Vol. 9358-11 (2015). DOI: 10.1117/12.2078669.
 W. Wang, A. Freundlich, “Rapid Sub-Wavelength Texturing for III-V Solar Cells by Laser Interference Lithography
and Selective Wet Etching”, Photovoltaic Specialists Conference (PVSC), 2015 42th
IEEE.
 W. Wang, A. Freundlich, “Rapid 2D incoherent mirror fabrication by laser interference lithography and wet etching
for III-V MQW solar cells”, Proc. of SPIE 9743, Physics, Simulation, and Photonic Engineering of Photovoltaic
Devices, Vol. 97430J (2016); DOI:10.1117/12.2212956.
 W.Wang, A. Freundlich, “Absorption Enhancement in III-V MQW Photovoltaic by Incoherent Back Reflector”,
Photovoltaic Specialists Conference (PVSC), 2016 43rd
IEEE.
 W.Wang (invited), A. Freundlich, “Advanced Light Management by Laser Interference Lithography and Wet Etching
for Solar Cells”, XXV International Materials Research Congress, Cancun Mexico (2016).
 X. Wang, Y. Song, W. Wang, Z. Li, Y. Xie, “Variation Law of Coefficient of Sensitivity to Pressure in Sandstone
Reservoir in Talim Oilfield”, Drilling & Production Technology, 31(1), pp 66-67, (2008), ISSN: 1006-768X.