Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
권호 표지
DOI QR코드

DOI QR Code

Photoluminescence of the Mn-doped ZnGa₂O₄ Phosphors Prepared by Coprecipitation of Metal Salts

  • Published : 1999.09.20
Download PDF
⟨ Previous Next ⟩

Abstract

Manganese-activated zincgallate (Zn1-xMnxGa2O4) phosphor as a green phosphor was readily prepared by coprecipitation in aqueous basic solution of metal salts. The obtained product converted to amorphous zincgallate even at 300℃, followed by crystallization at 1000 ℃. The pyrolyzed phosphor showed fine particle, then reduction treatment at 900 ℃ changed into homogeneous shape with slight grain growth(particle size less than 0.5 mm). The photoluminescence characteristics of the zincgallates have been investigated as a function of dopant concentrations, reducing atmospheres and temperatures. Under UV excitation the phosphors displayed the highest green emission efficiency at 504 nm when the specimen oxidized at 1000 ℃ was reduced at 900 ℃ in a mild hydrogen atmosphere (97% N2, 3% H2) with a flow rate of 100 ml/min.

Keywords

References

  1. Chemworld v.37 no.6 Ju, P.K.;Moon, S. Y.;Lee, Y. H.;Oh, M. H.
  2. Chemworld v.37 no.6 Moon, S. I.;Sin, Y.Y.;Hu, Y. D.;Kim, Y. H.;Gong, M. S.
  3. Bul Korean Chem. Soc. v.18 Jo, D. H.;Jung, H. K.;Seok, S. I.;Pakr, D. S.
  4. J. of the Korean Ceram. Soc. v.35 Ryu, H. J.;Park, H. D.
  5. J. Electrochem. Soc. v.141 Shea, L. E.;Datta, R. K.;Brown, J. J. Jr.
  6. J. Electrochem. Soc. v.138 Itoh, S.;Toki, H.;Sato, Y.;Morimoto, K.;Kishino, T.
  7. J. Chem. Phys. v.74 Avouris, P.;Morgan, T. N.
  8. Advanced Inorganic Chemistry Cotton, F. A.;Wilkinson, G.
  9. Sol-Gel Science Brinker, C. J.;Scherer, G. W.
  10. J. Electrochem. Soc. v.136 Chang, I. F.;Brownlow, J.W.;Sun, T. I.;Wilson, J. S.
  11. Jpn. J. Appl. Phys. v.35 Yu, C. F.;Lin, P.
  12. The Korean J. of Ceram. v.3 Lee, Y.J.;Nahm, S.;Kim, M. H.;Suh, K. S.;Cho, K. I.;Yoo, H. J.;Byun, J. D.
  13. J. Electrochem. Soc. v.140 Morell, A.;Khiati, E. L.
  14. J. of Catalysis. v.150 Kapteijn, F.;Langeveld, A. D. V.;Moulijn, J. A.;Andreini, A.;Vuurman, M. A.;Turek, A. M.;Jehng, J. M.;Wachs, I. E.
  15. J. of Solid State Chem. v.124 Barriga, C.;Fernandez, J. M.;Ulibarri, M. A.;Labajos, F.M.;Rives, V.