کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
739249 1461885 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A betavoltaic microcell based on Au/s-SWCNTs/Ti Schottky junction
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
A betavoltaic microcell based on Au/s-SWCNTs/Ti Schottky junction
چکیده انگلیسی


• Present a novel betavoltaic microcell based on Au/s-SWCNTs/Ti structure.
• Use Ni-63 as the beta particles source.
• Single-walled carbon nanotubes fabricated by dielectrophoretic (DEP) method.
• Metallic nanotubes are electrically eliminated by high current.
• Betavoltaic microcell with Voc of 26 mV, Jsc of 2.19 μA/cm2, and efficiency of 5.20%.

This paper reports a new type betavoltaic (BV) microcell based on intrinsic p-type semiconductive single-walled carbon nanotubes (s-SWCNTs). Our device composes of Au and Ti asymmetrical electrode pairs with s-SWCNTs laid over them forming Schottky junction with Ti and ohmic contact with Au. SWCNT bundles were self-assembled between Au and Ti electrodes by Dieletrophoretic (DEP) technique, and metallic SWCNTs (m-SWCNTs) were selectively eliminated by current-induced electrical breakdown method. 3.3 mCi/cm2 thin-film radioisotope 63Ni serves as beta particles source, with 100-year half-time and low toxicity. Test results show that SWCNTs BV microcell has the open circuit voltage (VOC) of 26 mV, short circuit current density (JSC) of 2.19 μA/cm2 and energy conversion efficiency (η) of 5.20%.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 215, 15 August 2014, Pages 17–21
نویسندگان
, , , ,