CAJ | 학술논문

通过向溶胶前躯体溶液中加入与金属阳离子不同比例的柠檬酸,用溶胶凝胶旋涂方法制备透明并且致密的Dy3+掺杂的LaVO4薄膜.当柠檬酸与金属阳离子的比例为2∶1时,制成的薄膜对可见和红外光的透过率达到90％左右,以波长为310 nm的光激发薄膜时可以得到对应于4F9/2-6H15/2和4F9/2-6H13/2跃迁的波长为484nm(蓝光)和576 nm(黄光)的发射波,讨论Dy3+掺杂的LVO4薄膜在染料敏化太阳能电池里的潜在应用.
통과향용효전구체용액중가입여금속양리자불동비례적저몽산,용용효응효선도방법제비투명병차치밀적Dy3+참잡적LaVO4박막.당저몽산여금속양리자적비례위2∶1시,제성적박막대가견화홍외광적투과솔체도90％좌우,이파장위310 nm적광격발박막시가이득도대응우4F9/2-6H15/2화4F9/2-6H13/2약천적파장위484nm(람광)화576 nm(황광)적발사파,토론Dy3+참잡적LVO4박막재염료민화태양능전지리적잠재응용.
Transparent and compact LaVO4:Dy3+ thin films were prepared by a spin-coating method with different ratios of citric acid to metal ions in the precursor solution. The transmittance of LaVO4:Dy3+ thin films reached around 90％ in the visible and infrared region with the optimum ratio 2∶1 of citric acid to metal cation.The LaVO4:Dy3+ films were excited by the 310 nm ultraviolet light and emitted the characteristic emissions of Dy3+ peaking at 484 nm (blue) and 576 nm (yellow) due to the transitions of 4F9/2 -6H15/2 and 4F9/2 -6H13/2,respectively.The potential application of LaVO4:Dy3+ film in the dye-sensitized solar cell (DSSC) was also discussed.