| Sarah M. Vorpahl | ||
Department of ChemistryUniversity of WashingtonBox 351700Seattle, WA 98195-1700 |
svorpahl@uw.edu |
Research Interests |
nanoscale characterization of next generation photovoltaic material using scanning probe microscopy techniques (including scanning kelvin probe microscopy [SKPM], piezoresponse force microscopy [PFM] and conductive atomic force microscopy [c-AFM]) and scanning electron microscopy (SEM); elemental characterization using, energy dispersive X-ray spectroscopy (EDS), x-ray diffraction (XRD); fabrication of solution processible thin film photovoltaics (CZTS, perovskites); women in STEM |
Education |
University of Washington, Seattle WA expected: January, 2017
Ph.D. Materials Chemistry GPA: 3.42 Advisors: Professor David Ginger, Chemistry Professor Hugh Hillhouse, Chemical Engineering M.S. Materials Chemistry June 2014 Northeastern Illinois University, Chicago, IL December 2011 B.S. Chemistry summa cum laude
University of California ,Santa Cruz, Santa Cruz, CA December 2004 B.A. Modern Literary Studies Minor: History of Art and Visual Culture |
Awards and Fellowships |
Clean Energy Institute Graduate Fellowship, University of Washington 2015National Defense Science and Engineering Graduate Fellowship 2013-2016 National Science Foundation Graduate Research Fellowship (honorable mention) 2013 Fellow of the Clean Energy Institute, University of Washington 2015 Advanced Materials for Energy Fellowship, University of Washington 2012 Society for the Advancement of Chicano Native American Scientists 2011 National Conference travel grant Society for the Advancement of Chicano Native American Scientists 2010 National Conference travel grant Outstanding Achievement in Organic Chemistry, Northeastern Illinois Univ. 2010
|
Peer Reviewed Articles |
1. Jahanbekam, A., Vorpahl, S., Mazur U., and Hipps, K.W., “Temperature Stability of Three Commensurate Surface Structures of Coronene Adsorbed on Au(111) from Heptanoic Acid in the 0 to 60 °C Range” J. Phys. Chem. C, 2013, 117 (6), pp 2914–2919
2. Salvador, M.*, Vorpahl, S.*, Xin, H., Williamson, W., Shao, G., Karatay, D., Hillhouse, H., Ginger, D. “Nanoscale Surface Potential Variation Correlates with Local S/Se Ratio in Solution-Processed CZTSSe Solar Cells” Nano Letters 14 (12) pp 6926-6930 (2014) 3. Nagaoka, H., Ma, F., deQuilettes, D., Vorpahl, S., Glaz, M., Colbert, A., Ziffer, M., Ginger, D., “Zr Incorporation into TiO2 Electrodes Reduces Hysteresis and Improves Performance in Hybrid Perovskite Solar Cells while Increasing Carrier Lifetimes, J.Phys. Chem. Lett., 2015 6 (4), 669-675 4. DeQuilettes, D., Vorpahl, S., Stranks, S., Nagaoka, H., Eperon, G., Ziffer, M., Snaith, H., Ginger, D., “Impact of Microstructure on Local Carrier Lifetime in Perovskite Solar Cells,” Science, 2015 just accepted. |
Articles Under Review |
1. Xin, H, Vorpahl, S., Collord, A., Braly, I., Uhl, A., Kruegerc, B., Ginger, D., and Hillhouse, H., “Lithium-Doping Inverts the Nanoscale Electric Field at the Grain Boundaries in Cu2ZnSn(S,Se)4 and Increases Photovoltaic Efficiency,” Energy and Environmental Science, 2015 submitted |
Articles in PreparationConference Presentations and Lectures |
1. Matsumoto, F., Vorpahl, S., Banks, J., Sengupta, E., and Ginger, D., “Degradation Kinetics and Morphology Evolution of Organometal Halide Perovskite Solar Cells.”
1. Vorpahl, S., Goykman, I., Fraiman, A, “Assessing Collaboration through Online Learning Using Wikispaces,” oral presentation, 2010 ACS Biennial Conference on Chemical Education (BCCE), Denton, TX 2. Jahanbekam, R., Vorpahl, S., Mazur, U., Hipps, K.,“Understanding Temperature and Concentration Dependence in the Supramolecular,” poster presentation,2011 SACNAS National Conference, San Jose, CA 3. Salvador, M., Vorpahl, S., Xin, H., Williamson, W., Shao, G., Karatay, K., Hillhouse, H., Ginger, D., “Correlating Surface Potential Variation with Varying S/Se Ratio in Cu2ZnSn(S,Se)4 Solar Cells,” oral presentation, Fall 2013 MRS Conference, Boston, MA 4. Vorpahl, S., Xin, H., Hillhouse, H., Ginger, D., “Doping Changes the Potential at the Grain Boundaries in Cu2ZnSn(S,Se)4 Photovoltaic Absorber Layers,” poster presentation, Puget Sound Women Chemists Retreat, University of British Columbia, Vancouver, Canada 5. Vorpahl, S., Xin, H., Hillhouse, H., Ginger, D., “Doping Changes the Potential at the Grain Boundaries in Cu2ZnSn(S,Se)4 Photovoltaic Absorber Layers,” poster presentation, 248th ACS National Conference, San Francisco, CA |
| 6. Vorpahl, S., Nagaoaka, H., Ma, F., Ginger, D., “Characterizing Long Range Order of Dipoles in Methyl Ammonium Lead Trihalide Perovskites using Piezoresponse Force Microscopy,” poster presentation, Orcas Conference 2014, Friday Harbor, WA.
7. “Future of Energy: Solar Cells from Plastic,” Lecture, UW Bothell, 10/06/14 |
|
Research ExperienceLeadership Experience |
NSF Research Experience for Undergraduates, Washington State University 2011
Supervisor: Dr. K.W. Hipps • Nanoscale characterization of coronene/alkane acid monolayers using liquid cell scanning tunneling microscopy NSF Research Experience for Undergraduates, The University of Chicago 2010 Supervisor: Dr. Steven Sibener. • Characterized self-assembled monolayers and polymer blends for superhydrophobic films using atomic force microscopy Undergraduate Research in Chemistry, Northeastern Illinois University 2010-2012 Supervisor: Dr. Kenneth T. Nicholson. • Imaged structural changes of IR fluorescent photoreceptors using scanning tunneling and atomic force microscopy Undergraduate Research in Chemical Education, Northeastern Illinois University 2010 Supervisor: Ana Fraiman • Performed assessment of online web resource used for the Organic Chemistry series at NEIU Women in Chemical Sciences, University of Washington Founder President 2012-2014 http://students.washington.edu/wcsuw/ · Official Registered Student organization with 50+ members fully funded and supported by Department of Chemistry · In two years hosted >20 events including career talks, workshops (e.g. imposter syndrome, microaggresions, negotiation, etc) and graduate student activities · Won three Danz Endowed Lectures from the Graduate School to bring high impact speakers to give large public lectures at UW. Amy Cuddy (Associate Professor of Business Administration, Harvard) 2013 Jill Cornell Tarter (Bernard M. Oliver Chair for SETI) 2015 Anita Sarkeesian (Director, Feminist Frequency) 2016 (tbd)
Puget Sound Women Chemists Retreat, Organizing Committee 2015 Pack Forest Conference Center, Eatonville, WA UW Chemistry Graduate Club, Social Chair 2014-2015 |
| Graduate Student Symposium Planning Committee, Speaker Chair August, 2014
248th ACS National Conference, San Francisco, CA · One day symposium on “Chemistry for Global Change” organized and executed exclusively by graduate students |
|
Teaching Experience |
Mentor, Undergraduate Researcher 2012-present
Mentor, Hooked on Photonics Research Experience for Undergraduates 2014 Lead Teaching Assistant, General Chemistry, University of Washington 2013 |
Outreach and Volunteer Experience |
Programmer, KZSC 88.1FM community radio 2002-4
Volunteer, WBEZ 91.5 FM National Public Radio 2005-8 · Wait, Wait Don’t Tell Me SACNAS National Conference, Seattle, WA 2012 Life Sciences Weekend, Pacific Science Center 2012 Expanding Your Horizons Conference, Seattle, WA 2013-4 Seattle Science EXPO, Seattle Science Festival, Seattle, WA 2013 Paws on Science, Pacific Science Center, Seattle, WA 2013-2015 Echo Lake Science Night, Shoreline, WA 2014 Huskies on the Hill, Olympia, WA 2014 |
Professional Memberships |
American Chemical Society
Materials Research Society Society for Advancement of Chicano/a and Native American Scientists Materials Research Society Women in Solar Energy Graduate Women in Science Association of Women in Science |
sarahvorpahl.com 