Zotsatira za silicon carbide diode yamphamvu kwambiri pa PIN Photodetector

Zotsatira zamphamvu kwambiri za silicon carbide diode paPin 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 mu PIN ndi chidule cha Chingerezi cha tanthawuzo la "intrinsic", chifukwa ndizosatheka kukhalapo semiconductor yoyera popanda zonyansa, kotero kuti I wosanjikiza wa PIN diode mu ntchito ndi mochuluka kapena mocheperapo wosakanikirana ndi pang'ono P-mtundu kapena N-mtundu zonyansa. 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. Choncho, PIN diode angagwiritsidwe ntchito ngati chinthu variable impedance, m'munda wa mayikirowevu ndi RF ulamuliro, nthawi zambiri zofunika kugwiritsa ntchito zipangizo kusintha kukwaniritsa chizindikiro kusinthana, makamaka m'malo ena mkulu-pafupipafupi kulamulira chizindikiro, PIN diode ndi apamwamba RF kulamulira mphamvu, komanso chimagwiritsidwa ntchito mu gawo kusintha, kusinthasintha, kuchepetsa ndi madera 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. ThePIN diodeali mkulu n'zosiyana zovuta kuwonongeka voteji VB, chifukwa otsika doping ine wosanjikiza pakati kunyamula chachikulu voteji dontho. Kuchulukitsa makulidwe a zone I ndikuchepetsa kuchuluka kwa ma doping a zone nditha kuwongolera voteji yakumbuyo ya PIN diode, koma kukhalapo kwa zone ndikuwongolera kutsika kwa VF kwa chipangizo chonsecho komanso nthawi yosinthira chipangizocho kumlingo wina, ndipo diode yopangidwa ndi silicon carbide zinthu imatha kupanga zofooka izi. Silicon carbide 10 nthawi zovuta zowonongeka kwa magetsi a silicon, kotero kuti makulidwe a silicon carbide diode I zone akhoza kuchepetsedwa kukhala gawo limodzi mwa magawo khumi a chubu la silicon, pokhalabe ndi mphamvu yowonongeka, kuphatikizapo matenthedwe abwino a zipangizo za silicon carbide, sipadzakhalanso zovuta zowonongeka kwa kutentha, kotero kuti galimoto yamagetsi yamagetsi yamagetsi yamagetsi imakhala yofunikira kwambiri ya galimoto yamagetsi yamagetsi. 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 carbidePIN chowunikira(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.