Figure 4From: Photogenerated charges and surface potential variations investigated on single Si nanorods by electrostatic force microscopy combined with laser irradiationTime evolutions of EFM phase shift. Of NR2 (a) and NR3 (b) obtained at a sample bias of 2 V when the laser is ON and OFF. The exponential decay and growth fittings of the data when the laser is ON and OFF are given in the insets of the figure.Back to article page