Mankhwala a Magnesium, Mg2Si

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Mankhwala a Magnesium, Mg2Si

Mg2Si ndiye malo okhawo okhazikika a Mg Si binary system. Ili ndi mawonekedwe a malo osungunuka kwambiri, kuuma kwakukulu komanso kutulutsa modulus. Ndi gawo laling'ono la band n-mtundu wa semiconductor. Ili ndi chiyembekezo chofunikira pakugwiritsa ntchito zamagetsi zamagetsi, zida zamagetsi, zida zamagetsi, laser, semiconductor kupanga, kulumikizana kwanthawi zonse koziziritsa kutentha ndi zina.


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Chitchaina dzina la magnesium silicide
Dzina la Chingerezi: magnesium silicon
Amadziwikanso kuti maziko azitsulo
Mankhwala amadzimadzi mg Ψ Si
Kulemera kwake ndi 76.71 CAS
Nambala yolowera 22831-39-6
Limatsogolera mfundo 1102 ℃
Osasungunuka m'madzi komanso owopsa kuposa madzi
Kachulukidwe: 1.94g / cm
Ntchito: Mg2Si ndiye malo okhawo okhazikika a Mg Si binary system. Ili ndi mawonekedwe a malo osungunuka kwambiri, kuuma kwakukulu ndi ma modulus okwera kwambiri. Ndi gawo laling'ono la band n-mtundu wa semiconductor. Ili ndi chiyembekezo chofunikira pakugwiritsa ntchito zamagetsi zamagetsi, zida zamagetsi, zida zamagetsi, laser, semiconductor kupanga, kulumikizana kwanthawi zonse koziziritsa kutentha ndi zina.
Magnesium silicide (Mg2Si) ndi semiconductor wosawonekera wokhala ndi malo ochepera. Pakadali pano, makampani opanga ma microelectronics makamaka amatengera zinthu za Si. Njira yakukula filimu yopyapyala ya Mg2Si pa Si gawo lapansi imagwirizana ndi njira ya Si. Chifukwa chake, Mg2Si / Si Heterojunction dongosolo lili ndi phindu lalikulu pakufufuza. Mu pepala ili, makanema ochepetsa chilengedwe a Mg2Si adakonzedwa pa gawo la Si ndikulowetsa gawo lokhala ndi magnetron sputtering. Mphamvu yakukula kwa makilogalamu a mg wa makulidwe amakanema a Mg2Si owerengeka adaphunziridwa. Pachifukwa ichi, ukadaulo wokonzekera wa Mg2Si based heterojunction LED zida adaphunziridwa, ndipo zamagetsi ndi zamagetsi zamafilimu owonda a Mg2Si adaphunziridwa. Choyamba, makanema a Mg adayikidwa pama Si magawo ndi magnetron opopera kutentha, ma Filamu a Si ndi makanema a Mg adayikidwapo pamitengo yamagalasi, kenako makanema a Mg2Si adakonzedwa ndi kutentha kwazitsulo (10-1pa-10-2pa). Zotsatira za XRD ndi SEM zikuwonetsa kuti gawo limodzi Mg2Si filimu yopyapyala imakonzedwa ndikuwonjezera pa 400 ℃ kwa 4h, ndipo kanema wokonzeka wa Mg2Si woonda amakhala ndi mbewa zolimba, yunifolomu komanso mosalekeza, malo osalala komanso khungu labwino. Chachiwiri, momwe makulidwe a Mg film amakulira pakukula kwa Mg2Si semiconductor film komanso ubale pakati pakulimba kwa kanema wa Mg ndi makulidwe a kanema wa Mg2Si pambuyo powonjezera. Zotsatirazi zikuwonetsa kuti makulidwe a kanema wa Mg ndi 2.52 μ m ndi 2.72 μ m, amawonetsa kuyika bwino komanso kusasunthika. Makulidwe a kanema wa Mg2Si amakula ndikukula kwa Mg makulidwe, omwe amakhala pafupifupi nthawi ya 0.9-1.1 ya Mg. Kafukufukuyu atenga gawo lofunikira pakuwongolera kapangidwe kazida zopangidwa ndi makanema ochepera a Mg2Si. Pomaliza, kupangidwa kwa Mg2Si pogwiritsa ntchito heterojunction light emitting zipangizo kumayesedwa. Mg2Si / Si ndi Si / Mg2Si / Si Heterojunction zida za LED ndizopangidwa pa Si gawo lapansi.

Katundu wamagetsi ndi wamagetsi a Mg2Si / Si ndi Si / Mg2Si / Si ma heterostructures amaphunziridwa pogwiritsa ntchito makina anayi a probetest, semiconductor chosinthira chowonekera komanso chowonetsetsa / chosakhalitsa chowala cha fluorescence. Zotsatira zikuwonetsa kuti: kulimbikira ndi kutsutsana kwa makanema kwama Mg2Si owonda kumachepa ndikukula kwa Mg2Si makulidwe; Mg2Si / Si ndi Si / Mg2Si / Si ma heterostructures amawonetsa mawonekedwe abwino opangira unidirectional, ndipo pamagetsi a Si / Mg2Si / Si mawonekedwe awiri a heterostructure ali pafupifupi 3 V; kukula kwa photoluminescence kwa Mg2Si / n-Si heterojunction chipangizo ndi chokwera kwambiri pomwe kutalika kwake ndi 1346 nm. Pamene kutalika kwake kuli 1346 nm, kukula kwa photoluminescence kwamafilimu opyapyala a Mg2Si omwe amakonzedwa pamagawo otetezera ndiokwera kwambiri; poyerekeza ndi photoluminescence ya Mg2Si makanema ochepera omwe amakonzedwa m'magawo osiyana siyana, makanema a Mg2Si omwe amakonzedwa pamagawo apamwamba kwambiri a quartz amakhala ndi kuwala kosalala komanso mawonekedwe a infrared monochromatic luminescence.


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