From optical recording to random access memories, Phase Change Materials (PCM) have already revolutionized a number of applications. The materials currently being explored include several chalcogenides glasses of Ge, Te, Sb, Se and Ag, and oxides such as vanadium dioxide. These materials are being explored for number of exciting potentials in photonics, ranging from optical limiters to spatial light modulators. In this talk, I will review our recent work on Ge2Sb2Te5 and VO2, including novel synthesis methods, doping techniques to modify their optical and electrical transition characteristics, glancing angle deposition of nanostructured Ge2Sb2Te5, device applications and future potentials.
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