Experimental Investigation of the Photocapacitance Effect in Organic Heterojunction Devices

다국어 초록 (Multilingual Abstract)

Photocapacitance eff ect refers to a mechanism that the illumination of light gives rise to an alteration in the junction capacitance. We reported the photocapacitance eff ect in organic heterojunction devices with measurements on various fabricated layer stacks. According to the results, the photocapacitance eff ect 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 eff ect to charge traps so that the light could eff ectively reduce the trapping lifetime, leading to changing the junction capacitance at low frequencies.

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