Dr. Alex Welch

Alumni - Industry and Private Sector



Alex defended on October 1st, 2021. She graduated from Stanford University in 2016with a BS in Engineering Physics.  Her previous research focused on using plasmonic hot carriers to create a photon upconverter.  In the Atwater group, she was part of JCAP (Joint Center for Artificial Photosynthesis) and LiSA (Liquid for Sunlight Alliance), and she was supported by the NSF Graduate Research fellowship.  When she is not doing science, Alex is likely to be running or hanging out with friends.

Available Publications


Comparative Technoeconomic Analysis of Renewable Generation of Methane Using Sunlight, Water, and Carbon Dioxide

Alex J. Welch, Ibadillah A. Digdaya, Ron Kent, Paul Ghougassian, Harry A. Atwater, and Chengxiang Xiang
ACS Energy Lett. 2021, 6, 1540−1549 (2021) - Solar Fuels

Bicarbonate or Carbonate Processes for Coupling Carbon Dioxide Capture and Electrochemical Conversion

Alex J. Welch, Emily Dunn, Joseph S. DuChene, and Harry A. Atwater
ACS Energy Lett. 2020, 5, 940−945 (2020)

Optical Excitation of a Nanoparticle Cu/p-NiO Photocathode Improves Reaction Selectivity for CO2 Reduction in Aqueous Electrolytes

Joseph S. DuChene, Giulia Tagliabue, Alex J. Welch, Xueqian Li, Wen-Hui Cheng, and Harry A. Atwater
Nano Letters (2020)

Radiation Tolerant Nanowire Array Solar Cells

Pilar Espinet-Gonzalez, Enrique Barrigón, Gaute Otnes, Giuliano Vescovi, Colin Mann, Ryan M. France, Alex J. Welch, Matthew S. Hunt, Don Walker, Michael D. Kelzenberg, Ingvar Åberg, Magnus T. Borgström, Lars Samuelson, and Harry A. Atwater
ACS Nano (2019)

Nanoporous Gold as a Highly Selective and Active Carbon Dioxide Reduction Catalyst

Alex J. Welch, Joseph S. DuChene, Giulia Tagliabue, Artur Davoyan, Wen-Hui Cheng and Harry A. Atwater
ACS Applied Energy Materials (2018) - Photocatalysis