Figure 4
Magnification images and I - V curves of single UAN and photo-generated current versus light wave number curve. (a) Low magnification and (b) high magnification images of a single UAN photoconductor. (c, d) The I-V curves of a single UAN at an irradiance of 0.6 and 21.6 μW/cm2, respectively. The curve of (e) photo-generated current versus (f) the light wave number at an illumination irradiance of 0.6 and 21.6 μW/cm2, respectively. The applied voltage is 40 V.