Figure 7

The transfer characteristics of pentacene OFET before and after the first run of 200-P/E-operation-cycles under photon-irradiation with a wavelength of 635 nm (a) in the logarithm form and (b) in the linear form, under photon-irradiation with a wavelength of 532 nm (c) in the logarithm form and (d) in the linear form, under photon-irradiation with a wavelength of 375 nm (e) in the logarithm form (f) in the linear form.