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. 2014 Jan 10;4:3626. doi: 10.1038/srep03626

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Aging of P3HT FET under continuous operation in ambient conditions and its signatures in CMS spectra: (a) consecutive transfer characteristics recorded at V_ds = −60 V. (b) consecutive CMS spectra in ambient air condition with V_on = −60 V, and V_ds = 0 V, V_off = 100 V (spectra are offset by 10⁻³ for clarity). (c) Increase and saturation of doping-induced effective carrier density (, integrated from 680 to 1700 cm⁻¹) and ΔV_th as a function of run number. (d) Linear dependence of ρ_2D on N_eff,doping, which is used to quantify polaron density from CMS measurements.

Inline graphic — Aging of P3HT FET under continuous operation in ambient conditions and its signatures in CMS spectra: (a) consecutive transfer characteristics recorded at V_ds = −60 V. (b) consecutive CMS spectra in ambient air condition with V_on = −60 V, and V_ds = 0 V, V_off = 100 V (spectra are offset by 10⁻³ for clarity). (c) Increase and saturation of doping-induced effective carrier density (, integrated from 680 to 1700 cm⁻¹) and ΔV_th as a function of run number. (d) Linear dependence of ρ_2D on N_eff,doping, which is used to quantify polaron density from CMS measurements.