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제123회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Enhancement of visible to UV up-conversion response of hollow phosphor Y2SiO5:Pr3+ by using surface plasmon resonance.

2019년 1월 23일 10시 51분 08초
PHYS.P-83 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 19일 (금요일) 11:00~12:30
Physical Chemistry
저자 및
Edgardo Gabriel Santoro, Young soo Kang1,*
Sogang University, Korea
1Department of Chemistry, Sogang University, Korea
Phosphor up-conversion materials (UCM) Y2SiO5:Pr3+ (YSO:Pr3+) can do wavelength conversion of visible light into UV light.[1] However, the main constrain about these types of materials is a low conversion efficiency, this limits their applications. The surface plasmon resonance (SPR) effect by using silver nanoparticles (NPs) is possible to enhance the luminescence intensity of UCM by incorporation of the hollow sphere between SPR nanoparticle and phosphor layer.[2] Silver nanoparticles with different sizes and SPR wavelength for the absorption of the visible range were prepared, encapsulated by glucose sphere and used it as hard template. For the synthesis of the hollow material, a layer of YOHCO3 using a urea precipitation and a layer of SiO2 through the Stöber method were added over the Ag NP template. The final hollow structure was obtained by a heat treatment of 1000 oC for 3 h induced it by the Kirkendall effect.[3,4] The whole structure size was around 300 nm depending on the metal core size. For each phosphor material with different Ag NP core size, an emission spectra were obtained and compared to the emission spectra of YSO:Pr3+, to quantify the enhancement by using SPR and select the optimal conditions to have the highest intensity.