He has carried out extensive electrical, optical, and magnetic resonance studies of many compound semiconductors, including most recently ZnO and GaN. He wrote the book Electrical Characterization of GaAs Materials and Devices, Wiley, 1989, and has published over 450 journal articles and been awarded 6 patents. His work is cited more than 1500 times per year according to the ISI Web of Science. Dr. Look has also organized and chaired many conferences, workshops, and symposia, including the First International Workshop on ZnO in 1999. He is a Fellow of the American Physical Society.