Light-induced hysteresis characteristics of copper phthalocyanine organic thin-film transistors
Applied Physics Letters 93, 203302 (2008);
DOI:10.1063/1.3027059
Authors:
Lijuan Zhen, Liwei Shang, Ming Liu, Deyu Tu, Zhuoyu Ji, Xinghua Liu, Ge Liu, Jiang Liu, Hong Wang
Abstract:
Applying a bidirectional sweeping gate voltage, the white-light illuminated copper phthalocyanine thin-film transistors (CuPc-TFTs) show obvious hysteresis effect and the hysteresis window is 32 V. This effect is dominated by the additional carriers generated by photoirradiation. Although small hysteresis exists in CuPc-TFTs without illumination, light makes the hysteresis more obvious. Thus, CuPc-TFTs are promising to realize light detection and/or light memory in a single organic device for future low-cost, ultrahigh-density organic photoelectric integration.
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