Abstract
• Observation of step-like transfer curves (I-V) • The organic barrier layer is replaced by inorganic (SIZO) material in this work. • Only amorphous semiconductors (inorganic materials) were used to obtain the step-like behaviour in the IV characteristics. • This study will be beneficial for the recent application of multi-value logic (MVL) circuits. Multi-valued logic (MVL) is a critical approach for high-density information and next-generation digital electronics. Recently developed multilayered-channel structure electronic devices provide new transistor operation of multi-valued logic switching characteristics. This paper investigates the step-like transfer curves of the amorphous SiZnSnO/SiInZnO/SiZnSnO (a-SZTO/SIZO/SZTO or a-SSS) multilayered-channel thin-film transistors (TFTs). The step-like transfer curves of a-SSS TFTs can be tuned intentionally by varying the thickness of the top and bottom layers of a-SZTO mainly because a low conducting material is introduced as a barrier layer to separate the top and bottom layers to obtain the intermediate states. Additionally, the conducting nature of the middle/barrier layer of a-SIZO was varied and studied for different Si concentrations.
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