Dr. Jr-Hau (J.H.) He

Principal Investigator
​Associate Professor​​​​​

Research Interests

  • ​2D Materials
  • Solar Fuels
  • Photonics
  • Semiconductor Optics
  • Nanoelectronics


       Dr. Jr-Hau He is an Associate Professor of Electrical Engineering program at King Abdullah University of Science & Technology (KAUST). He was a Visiting Scholar at Georgia Tech (2005), a Postdoc Fellow at National Tsing Hua University (2006) and Georgia Tech (2007), a Visiting Professor at Georgia Tech (2008), UC Berkeley (2010 and 2014), and UC San Diego (2012-2013), HKPolyU (Dec. of 2014), and University Lille 1 (May of 2016) and a tenured Asistant/Associate Professor at National Taiwan University (2007-2014).


     He has been a pioneer in optoelectronics, which reflects on his achievement of photon management on the light harvesting devices. He has conducted highly interdisciplinary researches to bridge those gaps between various research fields and between academia and industry. The great success of his research is reflected by his research funding, publications, awards, honors, patent and technology transfer to industry. He has grants received: > US$ 11M and garnered ~10000 citations for a body of work consisted of >200 peer reviewed journal articles and 18 patents with 53 of H factor over his career and over 200 presentations in international conferences. The nanotechnology he has developed has been transferred constantly to energy and LED industry in Taiwan and Saudi Arabia.

    Jr-Hau He is a pioneer of the photon management for boosting the optoelectronic devices. He published the important results in the light-matter interaction [Energy Environ. Sci. 4, 2863-2869 (2011); Energy Environ. Sci. 4, 3436-3441 (2011)], setting the foundations of the Black Si and later having obtained the groundbreaking device results by photon management. His pioneering research in optoelectronics began with the introduction of the giant optical enhancement with photon management in Si heterojunction solar cells using various hierarchical structures to achieve the efficiencies of 15.1% (nanowires on micropyramids), 15.2% (micropyramids on microgrooves), 14.6% (inverted pyramids) and 16.55% (graphene quantum dot as downconverters). (ACS Nano 7, 9325 (2013); ACS Nano 8, 2959 (2014); Nano Energy 23, 1 (2016); Nano Lett. 16, 309 (2016)). By employing the photon management, he published a series of pioneering results, demonstrating a world-record-high efficiency of Si hybrid solar cells (11% in 2013 and 13% in 2016). (Nano Lett. 13, 3658 (2013); ACS Nano 10, 815 (2016)). Dr. He applied the photon management to the solar water splitting using Si heterojunctions (Nano Lett. 15, 2817 (2015); Proc Natl. Acad. Sci. USA 112, 3612 (2015); Nature Mater. 14, 1245 (2015); Adv. Mater. 27, 6511 (2015); Ange. Chem. Int. Ed., 55,13104, 2016). Dr. He pioneered the field of optoelectronics of 2D materials by employing the photon management (Science 350, 1065 (2015); Science 349, 524 (2015); Nano Lett. 15, 1356 (2015); ACS Nano 8, 8317 (2014); Scientific reports 4, 3826 (2014)to a significant degree, determining the development of the field of nanophotonics in 2D materials. These works enjoyed wide experimental and theoretical following, accumulating thousand references. Today the photon management is a thriving field with many new phenomena and optoelectronic applications. Dr. He exploits rich experiences in industry-university collaborations.​

     He participates actively in activities and services in scientific professional societies. He serves as a member of the editorial board for numerous prestigious journals, and as a chair, co-chair, and a member of technical and steering committees for national and international symposiums. He is the Vice President of Saudi Arabia Section of OSA (2015-current), OSA Nanophotonics Technical Group Member, and OSA Travelling Lecturer. He was Faculty Advisor of OSA Student Chapter of National Taiwan University (2014). 38 postgraduate students (12 Ph.D. and 27 M.S. students) under his supervision completed their degree studies. He is a Fellow of OSA, RSC and SPIE, and a senior member of IEEE.  Visit his web for more information (