
monolayer dopping

ardhchaalak utpaadan mein monolayer dopping (mld) ack achchi tarah seey niyantrit, wafer-scale satah dopping takneek haye jise pahali baar 2007 mein california vishvavidyalaya, berkley mein vikasit kiya gayaa thaa. iss kaam kaa uddeshya paramanu sateekta key saath ardhchaalak samagri key niyantrit dopping koo praapt karna haye, vishesh roop seey nanoscale parr, joe anya maujooda takneekon dwara aasaani seey praapt naheen kiya jaataa haye. iss takneek kaa upayog vartamaan mein dhaatu-oxide-ardhchaalak kshetra prabhaav transister (mosfet) key bhaari dope kiye gaye srot/drain (aiss/dee) samparkon key roop mein ultra shallow junctions (yuu. aiss. jey. aiss.) koo banaane key saath-saath nanostructure kii dopent profiling koo saksham karane key liye kiya jaataa haye.
yeh aim. ell. dee. takneek ardhchalakon kii kristaliya prakriti aur isake swa-seemit satah pratikriya gunon kaa upayog atyadhik samaan, swa-ikattha, sahsanyojak roop seey bandhe dopent yukt monolayer banaane key liye karati haye, jisake baad dopent key samavesh aur prasaar key liye ack baad mein aniling charan hotaa haye. ack parat nirmaan pratikriya aatm-seemit haye, jisake parinamswarup satah parr dopent parmaanuon kaa nirdhaarak aavaran hotaa haye. aim. ell. dee. dopent khuraak niyantran key tareeke mein anya paaramparik dopping takneekon jaise spin-onn-dopent (aiss. oh. dee.) aur gais charan dopping takneekon seey alag haye. aim. ell. dee. mein iss tarah kaa niyantran satah parr sahsanyojak roop seey judey dopent key swa-seemit gathan key kaaran bahut adhik sateek haye, jabaki sodd kewal spin-onn oxide kii motai niyantran parr nirbhar karate hain aur gais charan takneek dopent gais pravaah darr key niyantran parr nirbhar karati haye; isaliye, aim. ell. dee. mein utkrisht khuraak niyantran parinami dopent profile kii sateek tuning pradaan curr sakata haye. aayan-pratyaropan kii tulanaa mein, aim. ell. dee. mein ardhchaalak jaali mein dopent prajaatiyon kaa urjaavaan parichay shamil naheen haye jahaan chrystal kshati prerit hoti haye. pratyaropan key mamle mein, antaral aur riktiyon jaise dosh anivarya roop seey utpann hotey hain, joe junction profile koo aur vyaapak banaane key liye dopent key saath baatchit karate hain. ise kshanik-vardhit prasaar (taid) key roop mein jaanaa jaataa haye, joe achchi gunavatta vaale yuu. aiss. jey. aiss. key gathan koo seemit kartaa haye. isake alawa, pratyaropan takneekon dwara dwiaadhaari aur tritiyak yaugik ardhchalakon key liye dopent sthiti mein yaadrichhik bhinnata aur gambhir stoichiometric asantulan prerit hotey hain. isake vipareet, sabhi aim. ell. dee. dopent paramanu chrystal satah seey thoke mein ushmiya roop seey faile hotey hain aur dopent profile koo ushmiya bajat dwara aasaani seey niyantrit kiya jaa sakata haye. choonki aim. ell. dee. pranali koo ack seemit srot model key roop mein vargeekrit kiya jaa sakata haye, isaliye yeh uchch ekroopata aur cumm yaadrichhik bhinnata key saath niyantrit yuu. aiss. jey. nirmaan key liye vaanchhaniya haye. aim. ell. dee. mein utkrisht dopent khuraak ekroopata aur coverage key saath, yeh vishesh roop seey dopping gair-samtal upkaranon jaise finn-fats aur nanovire key liye aakarshak haye. natijatan, iss aim. ell. dee. takneek key upayog key madhyam seey silicon mein uchch gunavatta vaale upa-5 nm ultra-shallow junction kaa pradarshan kiya gayaa haye. ack screening film mein cumm oorjaa aayan-pratyaropan key baad prasaar key baad, aim. ell. dee. takneek key liye cumm thermal bajat kii aavashyakta hoti haye aur sthalaakritik visheshtaon parr anuroop dopping kii anumati detee haye.
vibhinn sanrachanaon mein anuprayog.
aim. ell. dee. prakriya paaramparik samtaliya substrate, nanobelt aur nanovire sahit vibhinn nanostructured samagriyon key pee-aur aine-dopping donon key liye lagu hoti haye, joe yaa tou 'bottom-upp' yaa 'topp-down' drishtikon seey banaae jaate hain, jisase yeh vibhinn anuprayogon key liye atyadhik bahumukhi hoe jaataa haye. silicon key pee-prakaar key dopping mein, alilboronic acid pinacol ester kii ack sahsanyojak lunger vaali monolayer satah parr boron agradoot key roop mein banati haye, jabaki diethyl 1-propylphosphonet kii ack monolayer kaa upayog aine-prakaar key dopping mein phosphorus agradoot key roop mein kiya jaataa haye. udaaharan key liye, yuu. aiss. jey. gathan key mamle mein, phosphorus-mld aur paaramparik spike aniling key sanyojan seey, gair-sampark rs maap (~ 5000 ω/Â) key saath record 5 nm junction (2 nm-sima resolution seema taka) kii soochana dee jaati haye aur yeh dopent profile seey anumaanit moolyon key anuroop hotaa haye. vishesh roop seey, dopent key ~70% vidyut roop seey sakriya hotey hain kyonki aim. ell. dee. prakriya ack santulan adharit prasaar tantra kaa upayog karati haye.
silicon key alawa, uchch gunavatta vaale atee-uthale junction praapt karane key liye indium arsenide (aaee. aine. aeye. aiss.) jaise yaugik ardhchalakon parr bhee aim. ell. dee. lagaaya gayaa haye. pichhale varshon seey, pratyaropan aur anukramik aniling key baad thheek hoe chuke stoichiometry koo niyantrit karane mein chunautiyon key kaaran, aaee. aaee. aaee.-vee. samagri jaise yaugik ardhchalakon mein vikas key baad key dopent profile koo nirdhaarit roop seey niyantrit karna achchi tarah seey hassil naheen kiya gayaa haye. inn avashisht kshati seey uchch junction risaav hoe sakata haye aur yaugik ardhchalakon mein dopent sakriyan cumm hoe sakata haye. sulfur dopent key saath aim. ell. dee. takneek kaa upayog karate hue, ~ 3.5 nm/dashak kii ack dopent profile achanakta, ~ 8-1018 semi-3 kii uchch vidyut sakriya sulfur sandrata key saath mahatvapurna dosh ghanatva key binaa inaa mein dekhi jaati haye. ullekhaniya roop seey. aim. ell. dee. capping parat key roop mein kaary karati haye i) samooh v tatvon koo apashoshan seey rokna aur ii) dopent parmaanuon koo parivesh mein khone seey bachana taaki achchi gunavatta vaale junctions mein parinam hoe sakey. yeye sabhi upkaran nirmaan key liye iss naveen drishtikon kii upayogita koo aage pradarshit curr sakate hain.
kshetra khuraak aur junction profile kaa niyantran.
substrate satah rasayan vigyaan key upayog kii ack mahatvapurna visheshta 'khaali' aur dopent yukt anuon kii mishrit ekal parat banaakar dopent kii kshetriya khuraak koo aasaani seey niyantrit karane kii kshamata haye. udaaharan key liye, boron kii kshetriya khuraak mein herfer karane key liye vibhinn anupaaton mein boron poorvavarti anuon aur dodesine (sabhi carbon 'khaali' poorvavarti) key mishran kaa upayog kiya jaataa haye. mishrit ack parat gathan key alawa, dopent agradoot kii aanvik sanrachana vivaran kaa upayog karke kshetriya khuraak koo aasaani seey tune kiya jaa sakata haye. vishesh roop seey, agradoot kaa aanvik padchinh seedhe dopent kii satah sandrata koo niyantrit kartaa haye, jisamen badey anu cumm khuraak mein hotey hain. iss sambandh mein, dee. pee. pee. kii tulanaa mein lagbhag chhah gunaa badey aanvik padchinh key saath phosphorus agradoot key roop mein trikoniya phosphine oxide (sheersh) kaa upayog karate hue, dopent khuraak koo tadnusar chhah gunaa kii kamee mein sanshodhit kiya jaa sakata haye. isake alawa, dopping profile koo aniling sthitiyon key anukoolan key madhyam seey aasaani seey tune kiya jaa sakata haye. iss mamle mein, tej sthaanik kshay key saath uchch satah dopping ghanatva koo cumm aniel tapman aur yuu. aiss. jey. aiss. key gathan key liye cumm samay key saath iss aim. ell. dee. vidhi kaa upayog karke praapt kiya jaa sakata haye. poorvavarti key sanrachanaatmak design key madhyam seey dopent khuraak koo niyantrit karane aur aniling sthitiyon dwara dopent profile koo niyantrit karane kii kshamata vaanchhit dopent khuraak aur profile praapt karane key liye aim. ell. dee. prakriya kaa ack anootha pahalu prastut karati haye.
iss praudyogiki kii vartamaan mein udyog dwara aiss. aaee. aur aaee. aaee. aaee.-vee. yaugik ardhchalakon parr adharit bhavishya key nanoscale transister key yuu. aiss. jey. aiss./dee. samparkon key liye jaanch kii jaa rahee haye.