Figure 5
Detectivity and linear dynamic range of C60 nanorod photoconductor devices.
(a) Relative comparison of detectivities of C60 nanorod only and photodoped photoconductor devices as a function of wavelength. P3HT and CdSe NC sensitized devices exhibit a detectivity of ~108 Jones representing an order of magnitude increase over C60 nanorod only photoconductor devices. PbS NC photodoped devices exhibit the highest detectivity of ~109 Jones. (b) The photocurrent as a function of incident optical power measured using modulated (235 Hz) 514 nm incident light. The device shows a dynamic range covering 5 orders of magnitude (100 dB), within which linearity is maintained for 4 orders magnitude, corresponding to a linear dynamic range of ~80 dB.
