As a promising ultra-wide bandgap semiconductor, gallium oxide(Ga_2O_3) has attracted increasing attention in recent years. The high theoretical breakdown electrical field(8 MV/cm), ultra-wide bandgap(～ 4.8 eV) and l...As a promising ultra-wide bandgap semiconductor, gallium oxide(Ga_2O_3) has attracted increasing attention in recent years. The high theoretical breakdown electrical field(8 MV/cm), ultra-wide bandgap(～ 4.8 eV) and large Baliga's figure of merit(BFOM) of Ga_2O_3 make it a potential candidate material for next generation high-power electronics, including diode and field effect transistor(FET). In this paper, we introduce the basic physical properties of Ga_2O_3 single crystal, and review the recent research process of Ga_2O_3 based field effect transistors. Furthermore, various structures of FETs have been summarized and compared, and the potential of Ga_2O_3 is preliminary revealed. Finally, the prospect of the Ga_2O_3 based FET for power electronics application is analyzed.展开更多
By a rearrangement of the traditional supply-converter-load system connection,partial-power-processing-based converters can be used to achieve a reduction in size and cost,increase in system efficiency and lower devic...By a rearrangement of the traditional supply-converter-load system connection,partial-power-processing-based converters can be used to achieve a reduction in size and cost,increase in system efficiency and lower device power rating.The concept is promising for different applications such as photovoltaic arrays,electric vehicles and electrolysis.For photovoltaic applications,it can drive each cell in the array to its maximum power point with a relatively smaller converter;for electric-vehicle applications,both an onboard charger with reduced weight and improved efficiency as well as a fast charger station handling higher power can be considered.By showing different examples of partial-power-processing application for energy-conversion and storage units and systems,this paper discusses key limitations of partial-power-processing and related improvements from different perspectives to show the potential in future power electronic systems.展开更多
基金supported by the National Natural Science Foundation of China(Nos.61521064,61522408,61574169,6 1334007,61474136,61574166)the Ministry of Science andTechnology of China(Nos.2016YFA0201803,2016YFA0203800,2017YFB0405603)+2 种基金the Key Research Program of Frontier Sciences of Chinese Academy of Sciences(Nos.QYZDB-SSWJSC048,QYZDY-SSW-JSC001)the Beijing Municipal Science and Technology Project(No.Z171100002017011)the Opening Project of the Key Laboratory of Microelectronic Devices&Integration Technology,Institute of Microelectronics of Chinese Academy of Sciences
文摘As a promising ultra-wide bandgap semiconductor, gallium oxide(Ga_2O_3) has attracted increasing attention in recent years. The high theoretical breakdown electrical field(8 MV/cm), ultra-wide bandgap(～ 4.8 eV) and large Baliga's figure of merit(BFOM) of Ga_2O_3 make it a potential candidate material for next generation high-power electronics, including diode and field effect transistor(FET). In this paper, we introduce the basic physical properties of Ga_2O_3 single crystal, and review the recent research process of Ga_2O_3 based field effect transistors. Furthermore, various structures of FETs have been summarized and compared, and the potential of Ga_2O_3 is preliminary revealed. Finally, the prospect of the Ga_2O_3 based FET for power electronics application is analyzed.
文摘By a rearrangement of the traditional supply-converter-load system connection,partial-power-processing-based converters can be used to achieve a reduction in size and cost,increase in system efficiency and lower device power rating.The concept is promising for different applications such as photovoltaic arrays,electric vehicles and electrolysis.For photovoltaic applications,it can drive each cell in the array to its maximum power point with a relatively smaller converter;for electric-vehicle applications,both an onboard charger with reduced weight and improved efficiency as well as a fast charger station handling higher power can be considered.By showing different examples of partial-power-processing application for energy-conversion and storage units and systems,this paper discusses key limitations of partial-power-processing and related improvements from different perspectives to show the potential in future power electronic systems.
