Fig. 3. (Color online) Transfer curve with the illumination of various wavelengths (400 nm -- 700 nm) of light for (a) the Pristine IGZO, (b) AlOx/IGZO and (c) UVO IGZO phototransistors; (d) The variation of threshold voltage with wavelength and change of subthreshold swing; (e) Wavelength dependent photocurrent of the Pristine IGZO, AlOx/IGZO and UVO IGZO phototransistors; (f) Photocurrent in the 600 nm to 460 nm wavelength range.
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