Hello all, This is my first post here but I read these forums a lot as a lurker. I have a Bachelor's degree in Electronic Engineering and am currently pursuing master's in energy science and engineering from an interdisciplinary department. Based on the electives I have taken, I will be specializing in semiconductor photo-devices (PV cells and PV systems including power plants) and having a minor in galvanic energy conversion and storage devices (batteries/fuel cells etc.). I have also studied to limited extent other forms of renewable energy and solar thermal systems. I currently intend to pursue my master's thesis in the fields of electrochemical conversion and storage (materials characterization and device testing). I am quite interested and motivated to pursue this and would like to consider further studies. Currently, I am doing the thesis work at a chemistry department and it is interesting to see the shifts in viewpoint and synergies between physics and chemistry. However, it appears that in fields like this there is no clear distinction between physics, chemistry or even engineering as research seems to be going on in either of the departments. I have had no qualms about studying "extra" (in fact, between my bachelor's and master's I have covered nearly the entire physics undergraduate curriculum except for advanced quantum and statistical mechanics (have studied basic courses in both), nuclear physics and classical mechanics). I have also had minor subjects in chemical thermodynamics, electrochemistry and surface chemistry as electives. I wish to study further, but I wish to know if someone of my credentials can apply to chemistry/physics PhD programs because I do not have an outright degree in either of those. It appears most work in semiconductor devices are in physics departments (a little bit in chemistry) and electrochemical work is in chemistry departments (I am currently working in a chemistry department). I *may* be able to manage entrance tests in physics, but not in chemistry as my exposure to chemistry is via physical chemistry (or chemical physics) only. Should I just avoid pursuing work in electrochemical technology altogether? Will doing that "lock" me to chemistry (which is really not my strong suit)? I am not sure of the career options I will have or how my resume will be viewed, as by now I have done a huge branch shift from my initial degree in electronic engineering to this. Is multidisciplinary knowledge viewed as a plus in academic community?