| 학회 | 한국화학공학회 |
| 학술대회 | 2015년 봄 (04/22 ~ 04/24, 제주 ICC) |
| 권호 | 21권 1호, p.872 |
| 발표분야 | 재료 |
| 제목 | Synthesis and Photoluminescence of the PDMS/SrAl2O4:Eu2+,Dy3+ Long-Persistent Luminescence Composite |
| 초록 | Long-persistent luminescence exhibit very long-lasting afterglow after sunlight or artificial light irradiation. ZnS, MAl2O4(M=Sr, Ca, Ba), Y2O3 are representative phosphor. Among this luminescent materials, strontium aluminate have received much attention due to their high initial brightness, high quantum yield, long lasting time and good chemical stability. There are various method for synthesis phosphor such as sol-gel method, co-precipitation method, solid state reaction, etc. Electrospinning is one of the effective method to prepare one-dimensional hybrid materials. Electrospun nanofibers easily turn their size, morphology, composition. Utilizing a conventional electrospinning technique, Eu2+, Dy3+ co-doped strontium aluminate, SrAl2O4:Eu2+, Dy3+ nanofibers were fabricated. Starting materials of Sr(NO3)2 and Al(NO3)3∙9H2O were mixed with Eu(NO3)3 as an activator, Dy(NO3)3 as a co-activator. PVP/inorganic hybrid nanofibers were annealed under reducing atmosphere for the reduction of Eu3+ to Eu2+. Long-persistent luminescence composite was fabricated using the phosphor samples and PDMS. PL intensity and afterglow time of PDMS/SrAl2O4:Eu2+,Dy3+ composite is investigated with variety of doping concentrations. |
| 저자 | 이소라, 김형경, 김윤영, 정수환 |
| 소속 | 경북대 |
| 키워드 | Strontium aluminate; Long-persistent luminescence; Electrospinning; Composite |
| 원문파일 | 초록 보기 |
