Photoluminescence properties and energy transfer in Y2O3：Eu3+ nanophosphors
Cui Hang (崔航)a, Zhu Pei-Fen (朱培芬)b, Zhu Hong-Yang (祝洪洋)a, Li Hong-Dong (李红东)a, Cui Qi-Liang (崔啟良)a
a State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China; b Department of Electrical and Computer Engineering, Lehigh University, Bethlehem, PA 18015, USA
Abstract The photoluminescence (PL) properties of Y2O3:Eu3+ nanophosphors were systematically investigated with the goal of improving the color quality and quantum efficiency of Y2O3:Eu3+ nanophosphors for potential applications in nano-scale devices. The emission spectra, excitation spectra and fluorescence decay curves were employed to trace the energy transfer process from Eu3+ at C3i site to Eu3+ at C2 site. The experimental results show that the energy transfer process becomes more and more efficient with the increase in the Eu3+ concentration. The emission of Eu3+ at C2 site is favorable as it has high radiative efficiency and better color quality. The successful suppress of the emission Eu3+ at C3i is especially important for its applications in general illumination or display technology. The quantum efficiency and color quality of Y2O3:Eu3+ can be improved by controlling the energy transfer between the Eu3+ at S6 site and Eu3+ at C2 site.
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11304111 and 51172087), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20110061110011), and the Postdoctoral Research Foundation of China (Grant No. 2013M541284).
Cui Hang (崔航), Zhu Pei-Fen (朱培芬), Zhu Hong-Yang (祝洪洋), Li Hong-Dong (李红东), Cui Qi-Liang (崔啟良) Photoluminescence properties and energy transfer in Y2O3：Eu3+ nanophosphors 2014 Chin. Phys. B 23 057801
[1]
Zhu H, Ma Y, Yang H, Zhu P, Du J, Ji C and Hou D 2010 Solid State Commun. 150 1208
[2]
Zhang J, Cui H, Zhu P, Ma C, Wu X, Zhu H, Ma Y and Cui Q 2014 J. Appl. Phys. 115 023502
[3]
Lü Q, Zhao L, Guo F and Li M 2009 Chin. Phys. B 18 4030
[4]
Ray S, Pramanik P, Singha A and Roy A 2005 J. Appl. Phys. 97 94312
[5]
Konrad A, Fries T, Gahn A, Kummer F, Herr U, Tidecks R and Samwer K 1999 J. Appl. Phys. 86 3129
[6]
Qi Z M, Shi C S, Zhang W W, Zhang W P and Hu T D 2002 Appl. Phys. Lett. 81 2857
[7]
Rakov N, Lozano W, Maciel G S and De Araujo C B 2006 Chem. Phys. Lett. 428 134
[8]
Judd B R 1962 Phys. Rev. 127 750
[9]
Chang N C and Gruber J B 1964 J. Chem. Phys. 41 3227
[10]
Buijs M, Meyerink A and Blasse G 1987 J. Lumin. 37 9
[11]
Zych E, Karbowiak M, Domagala K and Hubert S 2002 J. Alloy. Compd. 341 381
[12]
Reddy A A, Das S, Goel A, Sen R, Siegel R, Mafra L, Prakash G V and Ferreira J M F 2013 AIP Adv. 3 022126
[13]
Dai Q L, Foley M E, Breshike C J, Lita A and Strouse G F 2011 J. Am. Chem. Soc. 133 15475
[14]
Shang C Y, Wang X Q, Kang H and Han D M 2011 J. Appl. Phys. 109 6
[15]
Krishna R H, Nagabhushana B M, Nagabhushana H, Murthy N S, Sharma S C, Shivakumara C and Chakradhar R P S 2013 J. Phys. Chem. C 117 1915
[16]
Forest H and Ban G 1969 J. Electrochem. Soc. 116 474
[17]
Dhanaraj J, Jagannathan R, Kutty T R N and Lu C H 2001 J. Phys. Chem. B 105 11098
[18]
Jollet F, Noguera C, Thromat N, Gautier M and Duraud J P 1990 Phys. Rev. B 42 7587
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