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SM ISO690:2012 BOTNARIUC, Vasile, GORCEAC, Leonid, COVAL, Andrei, CINIC, Boris, CHETRUŞ, Petru, RAEVSCHI, Simion, BANU, Semion. Proprietăţi electrofizice ale straturilor de CdS obţinute prin metoda pulverizării cu tratare termică în hidrogen
. In: Studia Universitatis Moldaviae (Seria Ştiinţe Exacte şi Economice), 2012, nr. 7(57), pp. 62-65. ISSN 1857-2073. |
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Studia Universitatis Moldaviae (Seria Ştiinţe Exacte şi Economice) | ||||||
Numărul 7(57) / 2012 / ISSN 1857-2073 /ISSNe 2345-1033 | ||||||
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Pag. 62-65 | ||||||
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Prin metoda pulverizării chimice au fost crescute straturi de CdS din soluţii apoase de CdCl2/(NH2)2 CS cu molaritatea de 0,1 M în intervalul de temperaturi (250...450)°C. Straturile au fost tratate termic în flux de hidrogen timp de 20 min la temperaturile de 350 şi 450°C. Au fost cercetate proprietăţile electrofizice şi fotoluminescenţa acestor straturi. În straturile depuse la 450°C cu mărirea temperaturii de tratare până la 450°C se observă o uşoară micşorare a concentraţiei purtătorilor de sarcină. Spectrul fotoluminescenţei prezintă o fâşie largă în intervalul de energii 1,6...2,6 eV. Se observă un vârf al fotoluminescenţei cu energia de 1,95 eV, care se deplasează cu mărirea temperaturii de creştere a straturilor de CdS şi atinge valoarea de 2,5 eV pentru straturile crescute la temperatura de 450°C. |
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Cuvinte-cheie straturi CdS, greutate atomică, proprietăţi electrice şi fotoelectricre, morfologie |
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Straturile au fost tratate termic în flux de hidrogen timp de 20 min la temperaturile de 350 şi 450°C. Au fost cercetate proprietăţile electrofizice şi fotoluminescenţa acestor straturi. În straturile depuse la 450°C cu mărirea temperaturii de tratare până la 450°C se observă o uşoară micşorare a concentraţiei purtătorilor de sarcină. Spectrul fotoluminescenţei prezintă o fâşie largă în intervalul de energii 1,6...2,6 eV. Se observă un vârf al fotoluminescenţei cu energia de 1,95 eV, care se deplasează cu mărirea temperaturii de creştere a straturilor de CdS şi atinge valoarea de 2,5 eV pentru straturile crescute la temperatura de 450°C.</cfAbstr> <cfAbstr cfLangCode='EN' cfTrans='o'>CdS layers were grown from the aqueous solution of CdCl2/(NH2)2 CS having a molarity of 0,1M by pulverization method in the temperature range of (250...450)°C. The layers were heat treated in a hydrogen flow during 20 min at the temperatures of 350°C and 450°C. 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