Wei-Chang Yang

Wei-Chang Yang

Graduate Research Assistant

Contact Information

School of Materials Engineering
Neil Armstrong Hall of Engineering
701 West Stadium Avenue
West Lafayette, IN 47907-2045

Advising Faculty

Adjunct Associate Professor of Materials Engineering

Degree in Progress

PhD in Materials Engineering

Teaching Experience

  • MSE 235 Materials Properties Laboratory (Teaching Assistant, Fall 2009)

Research Interests

Synthesis of earth-abundant nanocrystal ink and its use for a solar cell absorber
Solar energy is a promising energy source that is capable to fulfill the global energy demand sustainably. However, it has not been fully utilized due to the expensive manufacturing cost of solar cells. My research mainly focuses on the characterization of the earth-abundant energy materials. The phase purity and defects in copper-zinc-tin chalcogenide prepared using a non-toxic solution based processing are studied by the means of powder X-ray diffraction, energy-filtered transmission electron microscopy, and scanning transmission electron microscopy.

Publications

1. Qijie Guo, Grayson M. Ford, Wei-Chang Yang, Charles J. Hages, Hugh W. Hillhouse, Rakesh Agrawal, ?Enhancing the performance of CZTSSe solar cells with Ge alloying,? Solar Energy Materials and Solar Cells 2012, 105, 132?136.

2. Qijie Guo, Grayson M. Ford, Wei-Chang Yang, Bryce C. Walker, Eric A. Stach, Hugh W. Hillhouse, and Rakesh Agrawal, ?Fabrication of 7.2% Efficient CZTSSe Solar Cells Using CZTS Nanocrystals,? J. Am. Chem. Soc. 2010, 132 (49), 17384-17386.