A Micro Nuclear Battery Based on SiC Schottky Barrier Diode
- 15 April 2011
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Microelectromechanical Systems
- Vol. 20 (3), 685-690
- https://doi.org/10.1109/jmems.2011.2127448
Abstract
Based on the betavoltaic and alphavoltaic effects, a 4H-SiC micronuclear battery was demonstrated. A Schottky barrier diode, in place of the previously used p-n junction diode, was utilized for carrier separation. A theoretical model was derived to predict the output electrical power. Using beta radioisotope 63Ni and alpha radioisotope 241Am as the radiation sources, the micro nuclear battery was tested and proved to be effective to transfer decay energy into electrical power. The experimental results show that the theoretical model can basically predict the performance of the micronuclear battery. Although the energy conversion efficiencies under illumination of 63Ni and 241Am are only 0.5% and 0.1% at current status, an improvement by an order of magnitude can be expected if the doping concentration of the epilayer can be decreased to the optimal value.Keywords
This publication has 5 references indexed in Scilit:
- Demonstration of a radiation resistant, high efficiency SiC betavoltaicApplied Physics Letters, 2006
- Demonstration of a 4H SiC betavoltaic cellApplied Physics Letters, 2006
- Design Considerations for Ultra-Low Energy Wireless Microsensor NodesIEEE Transactions on Computers, 2005
- Self-reciprocating radioisotope-powered cantileverJournal of Applied Physics, 2002
- Silicon carbide alphavoltaic batteryPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1996