中国物理B ›› 2012, Vol. 21 ›› Issue (8): 88104-088104.doi: 10.1088/1674-1056/21/8/088104

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Low-voltage antimony-doped SnO2 nanowire transparent transistors gated by microporous SiO2-based proton conductors

轩瑞杰, 刘慧宣   

  1. Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, Hunan University, Changsha 410082, China
  • 收稿日期:2012-01-16 修回日期:2012-04-25 出版日期:2012-07-01 发布日期:2012-07-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10874042).

Low-voltage antimony-doped SnO2 nanowire transparent transistors gated by microporous SiO2-based proton conductors

Xuan Rui-Jie (轩瑞杰), Liu Hui-Xuan (刘慧宣 )   

  1. Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, Hunan University, Changsha 410082, China
  • Received:2012-01-16 Revised:2012-04-25 Online:2012-07-01 Published:2012-07-01
  • Contact: Xuan Rui-Jie E-mail:xuanruijie1988@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10874042).

摘要: A battery drivable low-voltage transparent lightly antimony(Sb)-doped SnO2 nanowire electric-double-layer (EDL) field-effect transistor (FET) is fabricated on an ITO glass substrate at room temperature. An ultralow operation voltage of 1 V is obtained on account of untralarge specific gate capacitance (~ 2.14 μF/cm2) directly bound up with mobile ions-induced EDL (sandwiched between top electrode and bottom electrode) effect. The transparent FET shows excellent electric characteristics with a field-effect mobility of 54.43 cm2/V·s, current on/off ration of 2× 104, and subthreshold gate voltage swing (S=d Vgs/d(log Ids)) of 140 mV/decade. The threshold voltage Vth (0.1 V) is estimated which indicates that SnO2 namowire transistor operates in an n-type enhanced mode. Such a low-voltage transparent nanowire transistor gated by microporous SiO2-based solid electrolyte is very promising for battery-powered portable nanoscale sensor.

关键词: electric double layer, proton conductor, solid electrolytes, nanowire transistors

Abstract: A battery drivable low-voltage transparent lightly antimony(Sb)-doped SnO2 nanowire electric-double-layer (EDL) field-effect transistor (FET) is fabricated on an ITO glass substrate at room temperature. An ultralow operation voltage of 1 V is obtained on account of untralarge specific gate capacitance (~ 2.14 μF/cm2) directly bound up with mobile ions-induced EDL (sandwiched between top electrode and bottom electrode) effect. The transparent FET shows excellent electric characteristics with a field-effect mobility of 54.43 cm2/V·s, current on/off ration of 2× 104, and subthreshold gate voltage swing (S=d Vgs/d(log Ids)) of 140 mV/decade. The threshold voltage Vth (0.1 V) is estimated which indicates that SnO2 namowire transistor operates in an n-type enhanced mode. Such a low-voltage transparent nanowire transistor gated by microporous SiO2-based solid electrolyte is very promising for battery-powered portable nanoscale sensor.

Key words: electric double layer, proton conductor, solid electrolytes, nanowire transistors

中图分类号:  (Nanowires)

  • 81.07.Gf
72.80.Ey (III-V and II-VI semiconductors) 73.40.Qv (Metal-insulator-semiconductor structures (including semiconductor-to-insulator))