Optimization Design and Simulation of a Multi-Source Energy Harvester Based on Solar and Radioisotope Energy Sources
| Autor: | Zheng You, Gaofei Zhang, Hao Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Nuclear engineering lcsh:Mechanical engineering and machinery Monte Carlo method 02 engineering and technology 01 natural sciences energy harvester Article Radiation Safety Information Computational Center radioisotope battery 0103 physical sciences lcsh:TJ1-1570 Electrical and Electronic Engineering 010302 applied physics business.industry multi-source solar Mechanical Engineering Energy conversion efficiency Electrical engineering 021001 nanoscience & nanotechnology Solar energy Control and Systems Engineering Electric power 0210 nano-technology p–n junction business Energy source Voltage |
| Zdroj: | Micromachines, Vol 7, Iss 12, p 228 (2016) Micromachines Micromachines; Volume 7; Issue 12; Pages: 228 |
| Popis: | A novel multi-source energy harvester based on solar and radioisotope energy sources is designed and simulated in this work. We established the calculation formulas for the short-circuit current and open-circuit voltage, and then studied and analyzed the optimization thickness of the semiconductor, doping concentration, and junction depth with simulation of the transport process of β particles in a semiconductor material using the Monte Carlo simulation program MCNP (version 5, Radiation Safety Information Computational Center, Oak Ridge, TN, USA). In order to improve the efficiency of converting solar light energy into electric power, we adopted PC1D (version 5.9, University of New South Wales, Sydney, Australia) to optimize the parameters, and selected the best parameters for converting both the radioisotope energy and solar energy into electricity. The results concluded that the best parameters for the multi-source energy harvester are as follows: Na is 1 × 1019 cm−3, Nd is 3.8 × 1016 cm−3, a PN junction depth of 0.5 μm (using the 147Pm radioisotope source), and so on. Under these parameters, the proposed harvester can achieve a conversion efficiency of 5.05% for the 147Pm radioisotope source (with the activity of 9.25 × 108 Bq) and 20.8% for solar light radiation (AM1.5). Such a design and parameters are valuable for some unique micro-power fields, such as applications in space, isolated terrestrial applications, and smart dust in battlefields. |
| Databáze: | OpenAIRE |
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