In this letter, we report enhanced gate-bias and current stress stability of p-type SnO thin-film transistors passivated with SiNx/HfO2 layers. The improvement is primarily attributed to the effective suppression of bias-induced adsorption of oxygen molecules on the back-channel surface by the presence of passivation layers. Under the gate-bias stress of 10 V and -10 V for 10000 s, the threshold voltage shifts for the passivated TFT are 0.75 V and -0.42 V, respectively, while the corresponding values for the unpassivated one are 1.24 V and -0.77 V. Under the current stress of 2.5 mu A for 10000 s, the threshold voltage shift is -0.29 V for the passivated TFT and -0.63 V for the unpassivated one.
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Chung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South KoreaChung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South Korea
Park, Ick-Joon
Jeong, Chan-Yong
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Chung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South KoreaChung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South Korea
Jeong, Chan-Yong
Myeonghun, U.
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Chung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South KoreaChung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South Korea
Myeonghun, U.
Song, Sang-Hun
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Chung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South KoreaChung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South Korea
Song, Sang-Hun
Cho, In-Tak
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Seoul Natl Univ, Sch Elect Engn & Comp Sci, Seoul 151742, South Korea
Seoul Natl Univ, Interuniv Semicond Res Ctr, Seoul 151742, South KoreaChung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South Korea
Cho, In-Tak
Lee, Jong-Ho
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Seoul Natl Univ, Sch Elect Engn & Comp Sci, Seoul 151742, South Korea
Seoul Natl Univ, Interuniv Semicond Res Ctr, Seoul 151742, South KoreaChung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South Korea
Lee, Jong-Ho
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Cho, Eou-Sik
Kwon, Hyuck-In
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Chung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South KoreaChung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South Korea