A5000896731- Advanced Energy Technologies and Civil Engineering Innovations
- Advanced Materials and Semiconductor Technologies
- X-ray Spectroscopy and Fluorescence Analysis
- Nuclear Physics and Applications
- Radioactivity and Radon Measurements
- Semiconductor materials and interfaces
Xi'an Institute of Optics and Precision Mechanics
2024
Jilin University
2018-2023
Wide-bandgap semiconductors are more advantageous for betavoltaic batteries due to their high conversion efficiency and strong radiation resistance. However, there has been little comprehensive analysis of how wide-bandgap lead improvements. In this work, we proposed a simulation model predict the output performance based on 4H-SiC, hexagonal-GaN, diamond, in which Monte Carlo code COMSOL Multiphysics software were combined. The energy deposition 63Ni source electrical characteristics p–n...
Abstract The conventional betavoltaic battery design fails to eliminate the inherent influence of radioactive source self-absorption effect, leading a bottleneck in efficiency and power batteries. In this paper, feasible high-efficiency 63 NiO/ZnO integrated is designed compared with battery. Simulation results show that proposed has better output performance breaks upper limit power. work presented here provides valuable insights for radioisotope designs, physical modeling procedure...
For the 63NiO-Si heterojunction betavoltaic nuclear battery, energy deposition of conversion material itself was simulated by Monte Carlo simulation, and structure optimized based on theoretical calculation results. When thickness 63NiO is 4 μm doping concentration Si 1 × 1015 cm−3, short-circuit current density, open-circuit voltage, fill factor, maximum output power density battery are 1.22 μA · cm−2, 3.17 V, 0.95, 3.67 μW cm−2. In addition, performance 63Ni/NiO-Si cell calculated in this...
Betavoltaic batteries can meet long-term energy supply needs. However, due to the decay of radioactive source, output performance battery will change over time, and laws this require elucidation aid engineer. In study, influences time on apparent power density β-energy spectrum 63 Ni source were clarified. Moreover, structural parameters, including p-region, n-region doping concentrations, junction depth GaN-based (hexagonal) p–n junction, optimized, which are 2 × 1017 cm–3, 1014 0.1 μm,...
This paper presents a simulation model to predict the performance of GaAs-based betavoltaic batteries with p–n junction structure, in which carrier transport and collection characteristics were studied. First, electron–hole pair generation rate GaAs material under irradiation 63Ni source was calculated using Monte Carlo codes. Furthermore, by simulating energy band electric field distribution, current density distribution finite element analysis software COMSOL Multiphysics, we analyzed...
Abstract This paper presents the calculation model and optimization design of GaAs-based betavoltaic batteries with p–n junction Schottky barrier structures. First all, by using Monte Carlo code, transport process energy deposition distribution <?CDATA $^{63}\textrm{Ni}$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msup> <mml:mi /> <mml:mrow> <mml:mn>63</mml:mn> </mml:mrow> </mml:msup> <mml:mtext>Ni</mml:mtext> </mml:math> source beta particles in GaAs...
Nuclear battery is a promising long-life power source. Selecting semiconductors with high limit efficiency and appropriate device structures effectively improves their output performance. In this work, GaN-based (hexagonal) betavoltaic Ni63 source was simulated by Monte Carlo codes COMSOL Multiphysics, the energy converters, including p–n junction p–i–n junction, were compared optimized. We analyzed effects of thickness doping concentration each region on performances. The p-region n-region...
In this work, energy converters, which contain a GaP–Si heterojunction and Si-based Schottky barrier diodes with Al, Ti, Ag, W, are used to convert 2 μm-thick 63Ni radioactive source into electrical energy. First, deposition distributions of the in these converters simulated by using Monte Carlo method. Then, output properties 63Ni/GaP–Si cell 63Ni/metal–Si determined through numerical calculation. For cell, optimized thickness GaP layer doping concentration Si, maximum power density...
This paper describes the theoretical calculation and optimization design of PN junction betavoltaic batteries with 4H–SiC-based energy converter titanium tritide source. The self-absorption radioactive isotope sources deposition distribution in semiconductor are simulated using Monte Carlo method. relationship between doping concentrations basic factors such as minority carrier diffusion lengths width depletion region analyzed via formulas. Then maximum output power density conversion...
The nuclear battery has many advantages, including high energy density, stable performance, no manual intervention etc., which can be widely utilized in cases requiring long-term reliable power supply. Among them, the Radioisotope Thermoelectric Generators (RTG) is earliest used and most technically matured one, while betavoltaic now commercialized. However, there are still some problems self-absorption effect, low conversion efficiency severe radiation damage restrict application of...
Abstract The time effect of tritium silicon p–n junction betavoltaic batteries is considered in this work. For a titanium (TiT 2 ) source, the processes decaying, leaking, swelling and 3 He releasing are contained calculation, expressions component density changes obtained. As goes by, self-absorption rate has downward trend, while all electrical performances decrease, especially short-circuit current ( I SC maximum output power P max ). At about 3.5 a, battery begins to release gaseous He,...
Abstract The GaAs-based betavoltaic batteries with <?CDATA $^{63}\textrm{Ni}$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msup> <mml:mi /> <mml:mrow> <mml:mn>63</mml:mn> </mml:mrow> </mml:msup> <mml:mtext>Ni</mml:mtext> </mml:math> source were demonstrated, in which the AlGaAs hole/electron transport layers introduced to enhance and collection of radiation-induced carriers. Monte Carlo codes COMSOL Multiphysics combined predict output performance...
Under the irradiation of a 63Ni source, Al/diamond Schottky barrier diode and 2198 Al–Li alloy/diamond can convert decay energy into electrical energy. Through Monte Carlo method, depositions source in converters are simulated separately. And then output properties two betavoltaic batteries calculated compared. The short-circuit current density, open-circuit voltage, fill factor maximum power density 0.086 μA/cm2, 2.14 V, 0.93, 0.17 μW/cm2 0.089 2.66 0.95, 0.22 μW/cm2, respectively....