SiC - Silicon Carbide

Silicon carbide yakawanikwa muna 1893 sechigadzirwa cheindasitiri chekukuya mavhiri nemabhureki emotokari. Panenge pakati pezana ramakore rechi20, SiC wafer inoshandisa yakakura kuti ibatanidze mune tekinoroji yeLED. Kubva ipapo, yakawedzera kuita akawanda semiconductor maapplication nekuda kwekunakisa kwayo kwemuviri zvimiro. Izvi zvivakwa zvinoonekwa muhuwandu hwayo hwekushandisa mukati uye kunze kweiyo semiconductor indasitiri. NeMutemo waMoore uchiita seunosvika pakugumira, makambani mazhinji ari mukati meiyo semiconductor indasitiri ari kutarisa kune silicon carbide seyo semiconductor zvinhu zveramangwana. SiC inogona kugadzirwa uchishandisa akawanda mapolytypes eSiC, kunyangwe mukati meiyo semiconductor indasitiri, akawanda substrates angave 4H-SiC, aine 6H- ichiwedzera kuwanda sezvo musika weSiC wakura. Kana tichitaura nezve 4H- uye 6H-silicon carbide, iyo H inomiririra chimiro checrystal lattice. Nhamba inomiririra kutevedzana kwemaatomu mukati mekristaro chimiro, izvi zvinotsanangurwa muSVM kugona chati pazasi. Zvakanakira Silicon Carbide Kuomarara Kune akawanda mabhenefiti ekushandisa silicon carbide pamusoro peakawanda echinyakare silicon substrates. Imwe yemabhenefiti makuru echinyorwa ichi kuoma kwayo. Izvi zvinopa izvo zvinhu zvakawanda zvakanaka, mukumhanya kwakanyanya, tembiricha yepamusoro uye / kana yakakwirira voltage application. Silicon carbide wafers ane high thermal conductivity, zvinoreva kuti vanogona kutamisa kupisa kubva pane imwe nzvimbo kuenda kune imwe tsime. Izvi zvinovandudza mashandiro ayo emagetsi uye pakupedzisira miniaturization, chimwe chezvakajairika zvinangwa zvekuchinja kune SiC wafers. Kupisa masimba eSiC substrates zvakare ane yakaderera coefficient yekuwedzera kwekupisa. Thermal kuwedzera huwandu uye gwara rechinhu chinowedzera kana makondirakiti sezvo ichipisa kana kutonhora pasi. Tsananguro inonyanyozivikanwa ichando, kunyangwe ichizvibata zvakapesana nesimbi zhinji, ichikura sezvainotonhora uye ichiderera sezvainopisa. Silicon carbide's low coefficient yekuwedzera kupisa zvinoreva kuti haishanduke zvakanyanya muhukuru kana chimiro sezvo ichidziya kana kutonhodzwa pasi, izvo zvinoita kuti ive yakakwana yekukodzera mumidziyo midiki uye kurongedza mamwe ma transistors pane imwechete chip. Imwe bhenefiti huru yeaya ma substrates ndeyekupokana kwavo kwepamusoro kuvhunduka kwekupisa. Izvi zvinoreva kuti vanokwanisa kushandura tembiricha nekukurumidza pasina kutyora kana kutsemuka. Izvi zvinogadzira mukana wakajeka kana uchigadzira michina sezvo iri imwe kuomarara hunhu hunovandudza hupenyu hwese uye kuita kwesilicon carbide mukuenzanisa neyechinyakare yakawanda silicon. Pamusoro pekugona kwayo kupisa, isimba rinogara rakasimba uye haaite nemaasidhi, alkalis kana munyu wakanyungudutswa patembiricha inosvika 800 ° C. Izvi zvinopa aya ma substrates kuita zvakasiyana-siyana mumashandisirwo azvo uye zvakare kubatsira kugona kwavo kuita yakawanda silicon mune akawanda maapplication. Kusimba kwayo pakupisa kwepamusoro kunoitawo kuti ishande zvakachengetedzeka patembiricha inopfuura 1600°C. Izvi zvinoita kuti ive yakakodzera substrate kune chero yakakwira tembiricha application.