Effects of surface modification on photoluminescence properties of LaPO4:Ce,Tb nano-phosphor synthesized by solvotliernial reaction

F. Nishimura, T. Isobe

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

The transparent colloidal solution of LaPO4:Ce,Tb nano-phosphor is synthesized from lanthanum acetate, cerium acetate, terbium acetate and trimethyl phosphate by the solvothermal reaction at 140°C in the mixture of water and methanol. The green photoluminescence (PL) due to the f-f transition of Tb3+ is observed by exciting the d-f transition of Ce 3+, followed by the energy transfer from Ce3+ to Tb 3+. The surface modification of LaPO4:Ce,Tb nano-phosphor powder by lauryl phosphate increases the PL intensity by a factor of 18. The surface modification is effective for LaPO4:Ce, but not for LaPO 4:Tb. These results suggest that the surface-passivation plays a significant role in the suppression of energy loss and the higher site-symmetry around Ce3+.

Original languageEnglish
Pages513-516
Number of pages4
Publication statusPublished - 2005 Dec 1
EventIDW/AD'05 - 12th International Display Workshops in Conjunction with Asia Display 2005 - Takamatsu, Japan
Duration: 2005 Dec 62005 Dec 9

Other

OtherIDW/AD'05 - 12th International Display Workshops in Conjunction with Asia Display 2005
CountryJapan
CityTakamatsu
Period05/12/605/12/9

ASJC Scopus subject areas

  • Engineering(all)

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    Nishimura, F., & Isobe, T. (2005). Effects of surface modification on photoluminescence properties of LaPO4:Ce,Tb nano-phosphor synthesized by solvotliernial reaction. 513-516. Paper presented at IDW/AD'05 - 12th International Display Workshops in Conjunction with Asia Display 2005, Takamatsu, Japan.