Postdoctoral Fellow @ Perovskite materials and photovoltaic devices From October 2015 to Present (3 months) PhD student @ Materials and light management for high-efficiency thin-film silicon solar cells From July 2011 to September 2015 (4 years 3 months) Visiting Researcher @ Developing multi-scale surface textures and highly transparent front TCOs for high efficiency thin-film silicon multijuntion solar cells. From September 2014 to November 2014 (3 months) Research Assistant @ Developing polymer solar cells-processing and plasmonic light trapping From July 2009 to July 2011 (2 years 1 month) Beijing City, ChinaMsc @ Plasmonic light trapping in polymer solar cells From September 2008 to July 2011 (2 years 11 months)

Doctor of Philosophy (Ph.D.), Materials Engineering and Applied Physics, Cum Laude @ Delft University of Technology From 2011 to 2015 Master’s Degree, Materials Sciences @ Chinese Academy of Sciences From 2008 to 2011 Bachelor’s Degree, Materials Engineering @ Central South University From 2004 to 2008 Hairen Tan is skilled in: Solar Cells, AFM, Materials, Photovoltaics, Characterization, Sputtering, PVD, Nanotechnology, Science, Spectroscopy, Thin Films, Experimentation, Physics, Materials Science, Silicon, Nanofabrication, PECVD deposition, Microscopy, SEM