کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5021805 1469376 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Polymer nano-composite films with inorganic upconversion phosphor and electro-optic additives made by concurrent triple-beam matrix assisted and direct pulsed laser deposition
ترجمه فارسی عنوان
فیلم های نانو کامپوزیتی پلیمری با افزودنی های ضد انعقاد فسفر و مواد الکترونی که با استفاده از ماتریس سه بعدی همزمان کمک می کنند و رسوب مستقیم لیزر پالسی
کلمات کلیدی
فیلم های پلیمری نانو کامپوزیت رسوب لیزر پالسی، ماتریکس به تبخیر لیزری پالس کمک کرد، فسفر تبدیل نادر زمین چندین پرتو چند هدف پالسی رسوب لیزر،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی
The work was to investigate polymer nano-composite films with two inorganic additives: upconversion fluorescent phosphor NaYF4:Yb3+, Er3+ and aluminum doped ZnO (AZO). The films were deposited using a new method of concurrent evaporation of the frozen solution of polymer poly(methyl methacrylate) (PMMA) using the matrix assisted pulsed laser evaporation (MAPLE) and the ablation of the phosphor and AZO targets using the pulsed laser deposition (PLD). Three laser beams, an infrared 1064-nm beam for the MAPLE and two 532-nm beams for the PLD targets, were concurrently used in the process. A new target holder with remote control of the target tilt was designed to provide overlapping of the plumes from the three targets and uniform mixing of the additives in the polymer film. The fabricated nano-composite films were characterized using X-ray diffraction, scanning electron microscopy (SEM), and the measurement of the quantum efficiency (QE) of the upconversion fluorescence. The films retained the crystalline structure of the inorganic additives. The size of the nano-particles varied in the range 10-200 nm. Upconversion QE of the films was an order of magnitude less than that of the bulk phosphor, which can be explained by lesser number of the rare-earth ions in the nano-particles in the polymer film than in the micro-grains of the bulk phosphor. The AZO additive increased QE by 1.6 times to (0.072 ± 0.022) % more likely due to the plasmonic enhancement of the local optical infra-red pump (980 nm) field. The proposed triple-beam triple-target MAPLE/PLD method can be potentially used for making a wide variety of nano-composite films.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part B: Engineering - Volume 109, 15 January 2017, Pages 82-90
نویسندگان
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