Substrate structures and fabrication methods thereof. A substrate
structure includes a bendable substrate and an inorganic electrode
structure on the bendable structure, wherein the inorganic electrode
structure includes a conductive layer or a semiconductor layer. The
inorganic electrode structure includes carbon nanotubes, carbon
nanofibers, a nanolinear material, or a micro-linear material. The
bendable substrate includes polyethylene (PE), polyimide (PI), polyvinyl
alcohol (PVA), or polymethyl methacrylate (PMMA).