Fig. 2From: Piezo-phototronic effect enhanced UV photodetector based on CuI/ZnO double-shell grown on flexible copper microwireXRD spectra of a Cu/CuI core/shell microwires and b Cu/CuI/ZnO core/double-shell microwires. Filled circle represents CuI signals and filled diamond represents Cu signals. c, d XPS spectra of Cu/CuI core/shell microwireBack to article page