A series of Co-doped ZnO thin films have been prepared by direct current reactive magnetron sputtering on glass substrates.The structural characterization by means of X-ray diffraction (XRD) and scanning electron micr...A series of Co-doped ZnO thin films have been prepared by direct current reactive magnetron sputtering on glass substrates.The structural characterization by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM) gave no evidence of second phase formation.The qualitative composition and chemical state were characterized by energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectronic spectrometry (XPS),respectively.The results confirmed that Co was incorporated as Co3+,occupying the Zn2+ sites in ZnO's wurtzite structure.The luminescence properties of the films were investigated by room temperature photoluminescence,and the optical properties were studied by optical transmittance.The magnetic analysis was carried out at room temperature and at 50 K by Quantum Design MPMS (SQUID) XL.The results showed that all the Co-doped ZnO thin films prepared by direct current magnetron sputtering were not ferromagnetic above 50 K.展开更多
Y2002-63199-2249 0319403从长石伟晶岩中静电分离白云母=Electrostatic sepa-ration of muscovite mica from feldspathic pegmatites[会,英]/Iuga,A.& Cuglesan,I.//2001 IEEE IndustryApplications Conference.Vol,4 of 4.—2249...Y2002-63199-2249 0319403从长石伟晶岩中静电分离白云母=Electrostatic sepa-ration of muscovite mica from feldspathic pegmatites[会,英]/Iuga,A.& Cuglesan,I.//2001 IEEE IndustryApplications Conference.Vol,4 of 4.—2249～2255(ME)展开更多
ZnO/diamond-like carbon (DLC) thin films are deposited by pulsed laser deposition (PLD) on Si (111) wafer. Visible room-temperature photoluminescence (PL) is observed from ZnO/DLC thin films by fluorescence spectropho...ZnO/diamond-like carbon (DLC) thin films are deposited by pulsed laser deposition (PLD) on Si (111) wafer. Visible room-temperature photoluminescence (PL) is observed from ZnO/DLC thin films by fluorescence spectrophotometer. The Gaussian curve fitting of PL spectra reveals that the broadband visible emission contains three components with λ=508 nm, 554 nm and 698 nm. The origin and possible mechanism of the visible PL are discussed, and they can be attributed to the PL recombination of ZnO and DLC thin films.展开更多
基金supported by the National Natural Science Foundation of China (Grant Nos.60576016,10774013,10804006)National High-Tech Research and Development Program of China (Grant No.2006AA03Z0412)+5 种基金111 project (Grant No.B08002)Fund for the Doctoral Program of Higher Education in China (RFDP) (Grant Nos.20070004024,20070004031)Beijing Natural Science Foundation of China (BNSFC) (Grant No.1102028)National Basic Research Program of China (Grant No.2010CB327705)National Natural Science Funds for Distinguished Young Scholar (Grant No.60825407)DIF Beijing Jiaotong University (Grant Nos.141028522,141036522)
文摘A series of Co-doped ZnO thin films have been prepared by direct current reactive magnetron sputtering on glass substrates.The structural characterization by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM) gave no evidence of second phase formation.The qualitative composition and chemical state were characterized by energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectronic spectrometry (XPS),respectively.The results confirmed that Co was incorporated as Co3+,occupying the Zn2+ sites in ZnO's wurtzite structure.The luminescence properties of the films were investigated by room temperature photoluminescence,and the optical properties were studied by optical transmittance.The magnetic analysis was carried out at room temperature and at 50 K by Quantum Design MPMS (SQUID) XL.The results showed that all the Co-doped ZnO thin films prepared by direct current magnetron sputtering were not ferromagnetic above 50 K.
文摘Y2002-63199-2249 0319403从长石伟晶岩中静电分离白云母=Electrostatic sepa-ration of muscovite mica from feldspathic pegmatites[会,英]/Iuga,A.& Cuglesan,I.//2001 IEEE IndustryApplications Conference.Vol,4 of 4.—2249～2255(ME)
基金supported by the National Natural Science Foundation of China (No.10974077)the Project of Shandong Province Higher Educational Science and Technology Program (No.J08LI04)
文摘ZnO/diamond-like carbon (DLC) thin films are deposited by pulsed laser deposition (PLD) on Si (111) wafer. Visible room-temperature photoluminescence (PL) is observed from ZnO/DLC thin films by fluorescence spectrophotometer. The Gaussian curve fitting of PL spectra reveals that the broadband visible emission contains three components with λ=508 nm, 554 nm and 698 nm. The origin and possible mechanism of the visible PL are discussed, and they can be attributed to the PL recombination of ZnO and DLC thin films.
