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Current density J vs. applied voltage V for pentacene single crystal at room temperature in vacuum and after exposure to dry air (increase in J) and ambient air (decrease in J). The different colors of the curves represent different exposure times. In pure air: , , , , , , , (–in vacuum). In ambient air: , , , , , , , , . The inset represents the evolution in time of the molar fraction of air in pentacene upon exposure of single crystals to dry air at room temperature and the fit with a 1D diffusion model.
Pressure (a), (c) and time (b), (d) dependence of the current at fixed bias voltage for single crystal pentacene in dark.
Dependence of the current at fixed bias voltage for single crystal pentacene of pressure (a), (c) and time at normal pressure (b), (d) exposed ambient florescent light.
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