Fig. 1From: Light-Trapping Engineering for the Enhancements of Broadband and Spectra-Selective Photodetection by Self-Assembled Dielectric Microcavity ArraysSchematic illustration of a the ZnO MCAs decorated PIN PDs and b the top view of the PIN device. c, d The planar and cross-sectional SEM images of the as-fabricated ZnO MCAs on the PIN PDBack to article page