Experimental Investigation of the Photocapacitance Effect in Organic Heterojunction Devices
Tóm tắt
Photocapacitance effect refers to a mechanism that the illumination of light gives rise to an alteration in the junction capacitance. We reported the photocapacitance effect in organic heterojunction devices with measurements on various fabricated layer stacks. According to the results, the photocapacitance effect was observed in those organic heterojunction devices constituting a pn junction, in which the illumination leads to increasing the device capacitance at low frequencies. Based on the results, we attributed this effect to charge traps so that the light could effectively reduce the trapping lifetime, leading to changing the junction capacitance at low frequencies.
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