Disordered solids,including various types of glasses,such as metallic glasses (MGs),ceramic glasses and polymeric glasses,possess an amorphous or aperiodic arrangement of their building blocks,such as atoms,ions and m...Disordered solids,including various types of glasses,such as metallic glasses (MGs),ceramic glasses and polymeric glasses,possess an amorphous or aperiodic arrangement of their building blocks,such as atoms,ions and molecules.At first sight,this is similar to the structure of their corresponding liquids,lacking any long-range translational symmetry as in crystalline solids.As a result,disordered solids usually exhibit a unique combination of properties,and are an indispensable class of engineering materials.For instance,MGs exhibit superb strength, high elastic limit,and outstanding corrosion-and wear- resistance,which is ideal for making sporting and medical apparatus.However,disordered solids,particularly structural glasses,could be very brittle under an ambient condition.Catastrophic failures can take place in them without noticeable plasticity [1,2].In practice,this severely hinders the applications of disordered solids as a reliable structural material;therefore,the origin of plas- ticity in disordered solids,if any,has been remaining in decades as one of the most active topics in materials science and engineering.展开更多
为了满足3300 V FRD反向漏电低,反向恢复软度大的应用要求,本文介绍了一种新的FRD设计。该设计通过优化阳极掺杂,采用轻离子辐照和电子辐照相结合的寿命控制方式来增加FRD的反向恢复软度,降低FRD的漏电流,通过台阶形场板保护环结构来降...为了满足3300 V FRD反向漏电低,反向恢复软度大的应用要求,本文介绍了一种新的FRD设计。该设计通过优化阳极掺杂,采用轻离子辐照和电子辐照相结合的寿命控制方式来增加FRD的反向恢复软度,降低FRD的漏电流,通过台阶形场板保护环结构来降低保护环的漏电流。采用8英寸平面栅加工工艺得到的芯片封装成了3300 V/1500 A FRD模块。模块在高温150℃下的V_(F)为2.18 V,漏电流I_(R)为10 mA,反向恢复能量(E_(rec))为1665 mJ,关断软度为3.67,反向恢复极限di/dt为8000A/us时承受的功率可达3210 kW。展开更多
基金the research funding from Research Grant Council (RGC) of Hong Kong with the grant number CityU 11207215 and CityU11209317
文摘Disordered solids,including various types of glasses,such as metallic glasses (MGs),ceramic glasses and polymeric glasses,possess an amorphous or aperiodic arrangement of their building blocks,such as atoms,ions and molecules.At first sight,this is similar to the structure of their corresponding liquids,lacking any long-range translational symmetry as in crystalline solids.As a result,disordered solids usually exhibit a unique combination of properties,and are an indispensable class of engineering materials.For instance,MGs exhibit superb strength, high elastic limit,and outstanding corrosion-and wear- resistance,which is ideal for making sporting and medical apparatus.However,disordered solids,particularly structural glasses,could be very brittle under an ambient condition.Catastrophic failures can take place in them without noticeable plasticity [1,2].In practice,this severely hinders the applications of disordered solids as a reliable structural material;therefore,the origin of plas- ticity in disordered solids,if any,has been remaining in decades as one of the most active topics in materials science and engineering.
文摘为了满足3300 V FRD反向漏电低,反向恢复软度大的应用要求,本文介绍了一种新的FRD设计。该设计通过优化阳极掺杂,采用轻离子辐照和电子辐照相结合的寿命控制方式来增加FRD的反向恢复软度,降低FRD的漏电流,通过台阶形场板保护环结构来降低保护环的漏电流。采用8英寸平面栅加工工艺得到的芯片封装成了3300 V/1500 A FRD模块。模块在高温150℃下的V_(F)为2.18 V,漏电流I_(R)为10 mA,反向恢复能量(E_(rec))为1665 mJ,关断软度为3.67,反向恢复极限di/dt为8000A/us时承受的功率可达3210 kW。
