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首页> 外文期刊>Materials Science and Engineering >Broad band photoluminescence of g-C_3N_4/ZnO/ZnS composite towards white light source
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Broad band photoluminescence of g-C_3N_4/ZnO/ZnS composite towards white light source

机译:G-C_3N_4 / ZnO / ZnS复合材料的宽带光致发光朝向白光源

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摘要

We have found one step synthesized g-C_3N_4/ZnO/ZnS composite to be promising for engineering of white-light sources. The composite was fabricated by simultaneous pyrolytic decomposition of thiourea and zinc acetate with a consequent in situ polymerization of the products at 550-625 °C and characterized by SEM, XRD, EDX and low temperature PL spectroscopy. The composite synthesized at 550 °C demonstrates blue PL with a peak at 2.74 eV while higher temperatures of the synthesis result in a broad spectra with a maximum at 2.22 eV and comprise of the bands of g-C_3N_4 and mixed ZnO/ZnS as they have been resolved by low temperature PL. The proper selection of the synthesis temperature allows an extension of light emitting spectra of g-C_3N_4/ZnO/ZnS composites from blue to white light range. The results obtained show ternary systems containing g-C_3N_4 and wide band-gap semiconductors are suitable for white-light emitting and optoelectronic devices.
机译:我们已经发现了一步合成的G-C_3N_4 / ZnO / Zns综合,以承诺工程为白光源。 通过在550-625℃的产物的原位聚合中同时通过硫脲和乙酸锌的热解性分解来制造复合材料,其特征在于SEM,XRD,EDX和低温PL光谱。 在550℃合成的复合材料在2.74eV下具有峰值的蓝色PL,而合成的较高温度导致宽的光谱,最大值为2.22eV,并且包含G-C_3N_4和混合ZnO / Zns的宽光谱。 由低温PL解决。 合成温度的正确选择允许从蓝色到白光范围的G-C_3N_4 / ZnO / ZnS复合材料的发光光谱的延伸。 获得的结果显示含有G-C_3N_4和宽带间隙半导体的三元系统适用于白光发射和光电器件。

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  • 来源
    《Materials Science and Engineering》 |2021年第5期|115109.1-115109.7|共7页
  • 作者单位

    Belarusian State University of Informatics and Radioelectronics 220013 P.Brovka str. 6 Minsk Belarus;

    Belarusian State University of Informatics and Radioelectronics 220013 P.Brovka str. 6 Minsk Belarus;

    B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus 220072 Nezavisimosti ave. 68-2 Minsk Belarus;

    B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus 220072 Nezavisimosti ave. 68-2 Minsk Belarus;

    Belarusian State University of Informatics and Radioelectronics 220013 P.Brovka str. 6 Minsk Belarus National Research Nuclear University MEPhI 115409 Kashirskoe hwy 31 Moscow Russia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Graphitic carbon nitride; Zinc oxide; Zinc sulfide; Photoluminescence; Scanning electron microscopy; Composite;

    机译:石墨氮化物;氧化锌;硫化锌;光致发光;扫描电子显微镜;合成的;

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