Zotsatira za silicon carbide diode yamphamvu kwambiri pa PIN Photodetector

Zotsatira za silicon carbide diode yamphamvu kwambiri pa PIN Photodetector

Mphamvu yapamwamba ya silicon carbide PIN diode nthawi zonse yakhala imodzi mwamalo opezeka kwambiri pa kafukufuku wa zida zamagetsi. PIN diode ndi kristalo diode yopangidwa ndi masangweji wosanjikiza wa intrinsic semiconductor (kapena semiconductor yokhala ndi zonyansa zochepa) pakati pa chigawo cha P+ ndi dera la n+. The i in PIN ndi chidule cha Chingerezi cha tanthawuzo la "intrinsic", chifukwa ndizosatheka kukhala ndi semiconductor yoyera popanda zonyansa, kotero kuti gawo la I la PIN mukugwiritsa ntchito limasakanizidwa pang'ono ndi P. -mtundu kapena zonyansa zamtundu wa N. Pakadali pano, silicon carbide PIN diode imagwiritsa ntchito kapangidwe ka Mesa ndi kapangidwe ka ndege.

Pamene ntchito pafupipafupi Pin diode upambana 100MHz, chifukwa chosungira zotsatira za zonyamulira ochepa ndi zoyendera nthawi zotsatira mu wosanjikiza I, diode amataya zotsatira rectification ndi kukhala impedance chinthu, ndi impedance mtengo kusintha ndi kukondera voteji. Pa zero bias kapena DC reverse bias, kusokoneza m'dera la I ndikokwera kwambiri. Mu DC kutsogola kukondera, dera la I limapereka malo ocheperako chifukwa cha jekeseni wonyamula. Chifukwa chake, diode ya PIN ingagwiritsidwe ntchito ngati chinthu chosinthira, m'munda wa microwave ndi RF control, nthawi zambiri ndikofunikira kugwiritsa ntchito zida zosinthira kuti mukwaniritse kusintha kwamasinthidwe, makamaka m'malo ena owongolera ma frequency apamwamba, ma PIN diode amakhala apamwamba. Mphamvu zowongolera ma siginecha a RF, komanso amagwiritsidwa ntchito kwambiri pakusintha magawo, kusinthasintha, kuchepetsa ndi mabwalo ena.

High-power silicon carbide diode imagwiritsidwa ntchito kwambiri pamagetsi chifukwa cha mawonekedwe ake apamwamba kwambiri okana ma voltage, omwe amagwiritsidwa ntchito ngati chubu chowongolera mphamvu zambiri. The PIN diode ali mkulu n'zosiyana kwambiri kusweka voteji VB, chifukwa otsika doping i wosanjikiza pakati kunyamula waukulu voteji dontho. Kuchulukitsa makulidwe a zone I ndikuchepetsa kuchuluka kwa ma doping a zone nditha kuwongolera bwino voteji yakumbuyo ya PIN diode, koma kupezeka kwa zone ndikuwongolera kutsika kwa VF kwa chipangizo chonsecho ndi nthawi yosinthira chipangizocho. pamlingo wina, ndipo diode yopangidwa ndi silicon carbide imatha kupanga zoperewera izi. Silicon carbide 10 nthawi zovuta zowonongeka zamagetsi za silicon, kotero kuti makulidwe a silicon carbide diode I zone akhoza kuchepetsedwa kukhala gawo limodzi mwa magawo khumi a chubu la silicon, pokhalabe ndi magetsi owonongeka, kuphatikizapo matenthedwe abwino a silicon carbide zipangizo. , sipadzakhala zovuta zodziwikiratu zowononga kutentha, kotero kuti silicon carbide diode yamphamvu kwambiri yakhala chida chofunikira kwambiri chowongolera mphamvu zamakono. zamagetsi.

Chifukwa cha kuchepa kwake kwakung'ono kwambiri komwe kumachokera pakalipano komanso kunyamula kwambiri, ma silicon carbide diode amakopa kwambiri pankhani yozindikira ma photoelectric. Kuthamanga kwakung'ono kungathe kuchepetsa mphamvu yakuda ya detector ndikuchepetsa phokoso; Kuyenda kwapang'onopang'ono kumatha kupititsa patsogolo chidwi cha silicon carbide PIN detector (PIN Photodetector). Makhalidwe amphamvu kwambiri a silicon carbide diode amathandizira zowunikira za PIN kuti zizindikire magwero amphamvu kwambiri ndipo zimagwiritsidwa ntchito kwambiri m'malo. Mphamvu yapamwamba ya silicon carbide diode yapatsidwa chidwi chifukwa cha mawonekedwe ake abwino kwambiri, ndipo kafukufuku wake wapangidwanso kwambiri.