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2006•Molecular Crystals and Liquid CrystalsRequires access

Effect of Charge Mobility for Organic Photovoltaic Devices

Bum Jin Jang, Jung Yong Kim, Jai Kyeong Kim, Jae-Woong Yu, Changhee Lee

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Abstract

Influence of charge mobility of n-type organic semiconductors for the performance of organic p-n junction type photovoltaic devices has been studied. Two n-type organic semiconductors with same main moiety (i.e., perylenebiscarboximide derivates), which posses similar HOMO, LUMO and band gaps; however with different charge mobility especially electron mobility have been utilized in this study. The electron mobility was measured by time of flight method. The electron mobility difference was caused by molecular packing characteristics since one of the semiconductor showed a liquid crystalline behavior.

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Influence of charge mobility of n-type organic semiconductors for the performance of organic p-n junction type photovoltaic devices has been studied. Two n-type organic semiconductors with same main moiety (i.e., perylenebiscarboximide derivates), which posses similar HOMO, LUMO and band gaps; however with different charge mobility especially electron mobility have been utilized in this study. The electron mobility was measured by time of flight method. The electron mobility difference was caused by molecular packing characteristics since one of the semiconductor showed a liquid crystalline behavior.

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Available abstract

Influence of charge mobility of n-type organic semiconductors for the performance of organic p-n junction type photovoltaic devices has been studied. Two n-type organic semiconductors with same main moiety (i.e., perylenebiscarboximide derivates), which posses similar HOMO, LUMO and band gaps; however with different charge mobility especially electron mobility have been utilized in this study. The electron mobility was measured by time of flight method. The electron mobility difference was caused by molecular packing characteristics since one of the semiconductor showed a liquid crystalline behavior.

Key concepts: Organic semiconductor, Electron mobility, Semiconductor, HOMO/LUMO, Moiety, Charge (physics), Materials science, Electron

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