Figure 4.

Flexible Si‐NW‐based PDs. a) SEM image of the MSM structure. Inset shows that the channel was free from Ag NW prior to Si NWs transfer. b) Representative device architecture and c) photograph of the final device. d) Light on–off measurements with different NW densities and e) dynamic response behavior. f) The stability of the devices in the investigated range. g) Photograph of flexible device at a bending radius of 1 cm. Reproduced with permission.98 Copyright 2013, American Institute of Physics.