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首页> 外文期刊>Journal of power sources >Low-temperature synthesis of tin dioxide hollow nanospheres and their potential applications in dye-sensitized solar cells and photoelectrochemical type self-powered ultraviolet photodetectors
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Low-temperature synthesis of tin dioxide hollow nanospheres and their potential applications in dye-sensitized solar cells and photoelectrochemical type self-powered ultraviolet photodetectors

机译：二氧化锡空心纳米球的低温合成及其在染料敏化太阳能电池和光电化学型自供电紫外光电探测器中的潜在应用

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摘要

Tin dioxide hollow nanospheres (SnO_2 HNSs) are synthesized via a fast, template/surfactant-free and low-temperature (100 ℃) solution route. These spheres consist of packed SnO_2 nanocrystals, implying good intercrystal-Iine connections and effective light absorption. In view of these advantageous features inherited from the prepared SnO_2 HNSs, TiO_2 coated SnO_2 HNSs (SnO_2 HNS-TiO_2) core-shell structures are used as photoanodes for dye-sensitized solar cells (DSSCs). A high power conversion efficiency (PCE) of 6.54% is achieved from SnO_2 HNS-TiO_2 DSSC, which increases by 53.8%, 21.5% and 330% as compared with those of the DSSCs based on commercial SnO_2 nanoparticle-TiO_2, TiO_2 nanoparticle (P25) and SnO_2 HNS, respectively. The unsensitized SnO_2 HNS-TiO_2 structure also serves as photoanode of the photo-electrochemical type ultraviolet (UV) photodetectors. The PCE of the SnO_2 HNS-TiO_2 based photodetectors reaches 21.5% at 330 nm, which is more than 2.75 times as large as that of nanocrystalline TiO_2 film based UV photodetectors. Moreover, the self-powered UV photodetectors also exhibit a high responsivity of 0.837 A/W, a high on/off ratio of 4021, a rise time of 0.03 s and a decay time of 0.01 s for short-circuit current density signal under UV irradiation.
机译：通过快速，无模板/无表面活性剂和低温（100℃）的溶液路线合成了二氧化锡空心纳米球（SnO_2 HNSs）。这些球体由堆积的SnO_2纳米晶体组成，这意味着良好的晶间-Iine连接和有效的光吸收。考虑到从制备的SnO_2 HNS继承的这些有利特征，将TiO_2包覆的SnO_2 HNS（SnO_2 HNS-TiO_2）核壳结构用作染料敏化太阳能电池（DSSC）的光阳极。 SnO_2 HNS-TiO_2 DSSC的功率转换效率（PCE）为6.54％，与基于商用SnO_2纳米颗粒-TiO_2，TiO_2纳米粒子的DSSC相比，分别提高了53.8％，21.5％和330％。 ）和SnO_2 HNS。未敏化的SnO_2 HNS-TiO_2结构还可以用作光电化学型紫外（UV）光探测器的光阳极。 SnO_2 HNS-TiO_2基光电探测器的PCE在330 nm处达到21.5％，是纳米TiO_2薄膜紫外光电探测器的2.75倍以上。此外，对于紫外线下的短路电流密度信号，自供电式紫外线光电探测器还表现出高响应度0.837 A / W，高开/关比4021，上升时间0.03 s和衰减时间0.01 s。辐射。

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  • 来源
    《Journal of power sources》 |2014年第25期|886-894|共9页
  • 作者

    Lulu Chen; Xiaodong Li; Youqing Wang; Caitian Gao; Hang Zhang; Bo Zhao; Feng Teng; Jinyuan Zhou; Zhenxing Zhang; Xiaojun Pan; Erqing Xie;

  • 作者单位

    School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, Gansu, PR China;

    New Materials R&D Center, Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, Sichuan, PR China;

    School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, Gansu, PR China;

    School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, Gansu, PR China;

    Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, Hunan University, Changsha 410000, Hunan, PR China;

    School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, Gansu, PR China;

    School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, Gansu, PR China;

    School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, Gansu, PR China;

    School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, Gansu, PR China;

    School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, Gansu, PR China;

    School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, Gansu, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Tin dioxide hollow nanospheres; Dye-sensitized solar cells; Photoelectrochemical; Self-powered ultraviolet photodetectors; Core-shell structure;

    机译：二氧化锡空心纳米球;染料敏化太阳能电池;光电化学;自供电式紫外线光电探测器;核壳结构;

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