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首页> 外文期刊>Journal of nano research >Tuning of Optical Properties in La_(1-x)Ba_xTaON_2 Oxynitride through Composition and Particle Size Controls
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Tuning of Optical Properties in La_(1-x)Ba_xTaON_2 Oxynitride through Composition and Particle Size Controls

机译：通过组成和粒度控制调整La_（1-x）Ba_xTaON_2氧氮化物中的光学性质

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摘要

La_(1-x)Ba_xTa(O,N)_3 oxynitrides were synthesized by ammonolysis of oxide precursors, prepared by a complex polymerization method. The absorption edge of the solid-solutions did not show a blueshift with an increase of x, in spite of the increase of O/N ratio, but rather the edge was redshifted. The substitution of La~(3+) by Ba~(2+) was thought to cause the bandgap to be redshifted due to the improved symmetry in (O,N)-Ta-(O,N) linkages in the perovskite structure. Addition of a NaCl flux during the ammonolysis of oxide precursors suppressed agglomeration of primary particles to inhibit the deterioration in the reflectivity after the longer wavelength region of the absorption edge.
机译：La_（1-x）Ba_xTa（O，N）_3氧氮化物通过氧化物前驱物的氨解反应合成，采用复合聚合方法制备。尽管O / N比增加，固溶体的吸收边缘并没有随x的增加而出现蓝移，但边缘却发生了红移。人们认为，由于钙钛矿结构中（O，N）-Ta-（O，N）键的对称性得到了改善，Ba〜（2+）取代了La〜（3+）使带隙发生了红移。在氧化物前体的氨解过程中添加NaCl助熔剂可抑制一次颗粒的团聚，从而抑制吸收边缘较长波长区域后反射率的降低。

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  • 来源
    《Journal of nano research》 |2013年第2013期|213-219|共7页
  • 作者

    Toshihiro Moriga; Katsuya Shiozaki; Hironori Fujito; Satoshi Kataoka; Kaoru Shinnou; Kei-ichiro Murai; Geoffrey I. N. Waterhouse; James B. Metson;

  • 作者单位

    Graduate School of Advanced Technology and Science, The University of Tokushima, 2-1 Minami-Josanjima, Tokushima 770-8506, Tokushima, Japan;

    Graduate School of Advanced Technology and Science, The University of Tokushima, 2-1 Minami-Josanjima, Tokushima 770-8506, Tokushima, Japan;

    Graduate School of Advanced Technology and Science, The University of Tokushima, 2-1 Minami-Josanjima, Tokushima 770-8506, Tokushima, Japan;

    Graduate School of Advanced Technology and Science, The University of Tokushima, 2-1 Minami-Josanjima, Tokushima 770-8506, Tokushima, Japan;

    Graduate School of Advanced Technology and Science, The University of Tokushima, 2-1 Minami-Josanjima, Tokushima 770-8506, Tokushima, Japan;

    Graduate School of Advanced Technology and Science, The University of Tokushima, 2-1 Minami-Josanjima, Tokushima 770-8506, Tokushima, Japan;

    School of Chemical Science, The University of Auckland, Private Bag 92019, Auckland, New Zealand;

    School of Chemical Science, The University of Auckland, Private Bag 92019, Auckland, New Zealand;

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  • 正文语种 eng
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  • 关键词

    Oxynitrides; Perovskite; Diffuse reflectance; Particle size; Flux;

    机译：氧氮化物;钙钛矿;漫反射率;粒度;助焊剂;

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