کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10156558 1666407 2018 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization design of betavoltaic battery based on titanium tritide and silicon using Monte Carlo code
ترجمه فارسی عنوان
طراحی بهینه سازی باطری بتالاکتیک بر اساس تریتی تیتانیوم و سیلیکون با استفاده از کد مونت کارلو
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
چکیده انگلیسی
This article presents the optimization design and simulation of a betavoltaic battery composed of a silicon p-n junction converter and a titanium tritide film as an isotope source. The self-absorption of β particles emitted from the tritium radioisotope in the titanium tritide film and the energy deposition of β particles in the silicon converter are investigated by the Monte Carlo simulation with the Geant4 radiation transport toolkit. The relationships between doping concentrations and basic parameters such as depletion region width, minority carrier diffusion length and leakage current of the PN junction are discussed through the calculation formulas. By optimizing the doping concentrations in the P-type and N-type regions, the optimized betavoltaic battery can maximize the output power and the conversion efficiency based on the energy deposition in the silicon. The results show that the optimal thickness of the titanium tritide film is about 0.7 µm and the optimal doping concentrations of the battery with a PN junction depth of 50 nm are Na=5.75×1019cm−3,Nd=2.95×1018cm−3. Under these parameters, the size 1mm×1mm proposed battery with 2.9 mCi/mm2 3H can achieve the output power 0.902 nW and the conversion efficiency 0.91%. The open circuit voltage, short circuit current and fill factor of the battery are 0.389 V, 3.03 nA and 0.766, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 142, December 2018, Pages 22-27
نویسندگان
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