BDD

Hi all, First time poster here, and currently looking for some good advice. I’m about to finish my master studies in June and therefore I’m looking for advice. I’m searching for a university that has a renowned department/study group in a specific field of study. I hope to join that study group/department such that I would have good guidance during my doctoral studies. Currently I’m in my last year of electrical engineering as well as photonics engineering. A little over a year ago, I also finished both bachelors in electrical engineering and applied physics. For next year however (from July and onward) I'd like to obtain a PhD position that is physics, photonics and/or electronics related. My friends told me that I should pursue the top universities. Personally I think, good guidance from a professor/study group/department that has a lot of knowledge in the field of study I want to do my doctoral studies in, is more important. To get the best of my educational background, it would be interesting to have a subject which is multiphysics related. Within this scope is for example the modelling of optical or semiconductor devices within electromagnetics. Therefore I'd like to kindly ask if any of you know a university department, study group or a professor within Europe who would be interested. I'm open to any changes related to the PhD subject. If any of you know a professor/university who is working in the multiphysics field or you can give me some pointers or some advice for my search, I'd be very grateful. Thanks in advance, Bert