Heayoung Yoon portrait
  • Adjunct Associate Professor, Materials Science and Engineering
  • Associate Professor, Elect & Computer Engineering


  • Ph. D., Electrical Engineering, The Pennsylvania State University
  • M.S., Physics, Pohang University of Science and Technology (South Korea)
  • B.S., Physics (minor: Computer Science), Chungnam National University (South Korea)

Research Summary

Primary research interests are in engineering micro/nano materials to enhance device performance and functionality in energy, advanced electronics, and biomedical technology. Pursuit of these interests has included work on pillar array solar cells, robust molecular junction devices, and near field bio-imaging platforms. Current research focuses on investigation of 3D local electrical and optical properties of polycrystalline thin film solar cells.


*National Institute of Standards and Technology, Gaithersburg, MD (2014)
  • NIST / UMD Research Associate
  • Investigated inhomogeneous microstructural properties of thin film solar cells using electron beams
  • Developed high-resolution optical imaging technique using quantum dots
  • Collaborated with DuPont, QD Vision, NREL, and University of Toledo
*The Samsung Advanced Institute of Technology, Suwon, South Korea (2002)
  • Researcher
  • Teamed with other researcher to invent a RPE-CVD (remote plasma enhanced-chemical vapor deposition) and a moving-target sputter system for ultrathin film deposition
  • Installation of low pressure CVD and ALD (atomic layer deposition) systems
  • Analyzed electrical properties of dielectric film for single electron transistors