کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1665867 | 1518056 | 2013 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Self-aligned top-gate InGaZnO thin film transistors using SiO2/Al2O3 stack gate dielectric Self-aligned top-gate InGaZnO thin film transistors using SiO2/Al2O3 stack gate dielectric](/preview/png/1665867.png)
• Self-aligned top-gate indium–gallium–zinc oxide thin-film transistor is proposed.
• SiO2/Al2O3 stack gate dielectric is proposed.
• The source/drain areas are hydrogen-doped by CHF3 plasma.
• The devices show good electrical performance and scaling down behavior.
Self-aligned top-gate amorphous indium–gallium–zinc oxide (a-IGZO) thin film transistors (TFTs) utilizing SiO2/Al2O3 stack thin films as gate dielectric are developed in this paper. Due to high quality of the high-k Al2O3 and good interface between active layer and gate dielectric, the resulting a-IGZO TFT exhibits good electrical performance including field-effect mobility of 9 cm2/Vs, threshold voltage of 2.2 V, subthreshold swing of 0.2 V/decade, and on/off current ratio of 1 × 107. With scaling down of the channel length, good characteristics are also obtained with a small shift of the threshold voltage and no degradation of subthreshold swing.
Journal: Thin Solid Films - Volume 548, 2 December 2013, Pages 572–575