Ib qho hluav taws xob transistor

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Ib qho hluav taws xob transistor

Lub transistor uas tuaj yeem sau cov teeb liab nrog ib lossis ib qho me me ntawm electrons. Nrog rau kev txhim kho ntawm semiconductor etching thev naus laus zis thiab cov txheej txheem, kev sib koom ua ke ntawm kev sib xyaw ua ke loj loj tau nce siab dua. Nyob rau hauv cov ntaub ntawv ntawm dynamic random access nco (DRAM), nws kev koom ua ke yog yuav luag plaub zaug sai dua txhua ob xyoos. Nws cia siab tias ib leeg-electron transistors yuav yog lub hom phiaj kawg. Tam sim no, lub cim xeeb dav dav muaj 200,000 electrons ib lub cim xeeb ntawm tes, thiab ib leeg-electron transistor tsuas muaj ib lossis ib qho me me ntawm cov hluav taws xob ib lub cim xeeb ntawm tes, yog li nws yuav txo tau lub zog siv zog thiab txhim kho kev sib koom ua ke. circuits. Xyoo 1989, JHFScott-Thomas et al. sim pom Coulomb thaiv. Nyob rau ntawm ob-dimensional electron gas tsim los ntawm lub interface ntawm doped heterojunction, ib tug hlau electrode nrog ib tug me me cheeb tsam yog tsim, thiaj li hais tias ib tug quantum dot yog tsim nyob rau hauv ob-dimensional electron gas, uas tsuas yog haum rau ib tug me me ntawm electrons. , uas yog, nws capacitance. Tsawg heev, tsawg dua ib? F (10 ~ 15 Farah). Thaum siv qhov hluav taws xob, yog tias qhov hloov hluav taws xob ua rau cov nqi hloov pauv hauv quantum dot kom tsawg dua ib qho hluav taws xob, tsis muaj tam sim no yuav dhau mus. Tam sim no tsis dhau mus txog thaum qhov hluav taws xob nce ntxiv kom ua rau muaj kev hloov pauv hauv hluav taws xob. Yog li ntawd, tam sim no-voltage kev sib raug zoo tsis yog ib txwm linear kev sib raug zoo tab sis ib tug stepped duab. Thawj thawj zaug hauv keeb kwm, qhov kev sim no tau ua tiav phau ntawv tswj ntawm lub tshuab hluav taws xob, muab kev sim hauv paus rau kev tsim khoom ntawm ib qho hluav taws xob transistors. Txhawm rau txhim kho kev ua haujlwm kub ntawm ib leeg-electron transistors, qhov loj ntawm quantum dots yuav tsum tsawg dua 10 nanometers. Tam sim no, ntau lub chaw kuaj mob thoob ntiaj teb tab tom xav txog ntau txoj hauv kev los daws qhov teeb meem no. Qee lub chaw soj nstuam hais tias tau tsim ib qho hluav taws xob transistors uas ua haujlwm ntawm chav tsev kub, soj ntsuam cov kauj ruam tam sim no-voltage nkhaus tsim los ntawm kev thauj khoom hluav taws xob, tab sis ntawm qhov deb ntawm kev siv tswv yim.