Pablo Vaccaro earned his MSc in Physics working on LPE of IV-VI compound semiconductors, in 1986, and his PhD in Physics degree working on CdS/CdTe solar cells, in 1991, at Balseiro Institute, Bariloche, Argentina. He joined Prof. Hiroyuki Matsunami's Labs at the Dept. of Electrical Engineering, Kyoto University, Japan, where he conducted post-doctoral research on chemical beam epitaxy of III-V compound semiconductors until 1993. He then moved to Advanced Telecom. Research Institute, in Kyoto, Japan, where he conducted research on MBE of III-V compound semiconductors and optoelectronic devices fabrication, reaching the position of Senior Researcher. In 2006 he was hired by Sharp Corp. at the Advanced Technol. Res. Labs., in Nara, Japan, where he worked on MOCVD of III-N compound semiconductors and fabrication process of blue laser diodes and LEDs. He became ICREA Research Professor at ICMAB-CSIC, Bellaterra, Spain, in 2010 and he moved to ICFO, Castelldefels, Spain, in 2018.