Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第29卷    第8期    总第245期    2019年8月

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文章编号:1004-0609(2019)-08-1693-08
Cr掺杂SnS2纳米花的微观结构与光学性能
赵文华1, 2,魏智强1, 2,梁家浩2,马 龙2,张旭东2,姜金龙2

(1. 兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室,兰州 730050;
2. 兰州理工大学 理学院,兰州 730050
)

摘 要: 以曲拉通为修饰剂,通过水热法合成花状Sn1-xCrxS2纳米晶(x=0、0.01、0.03、0.05和0.07),研究Cr 掺杂浓度对样品的晶体结构、形貌和光学性能的影响。XRD、EDS 和XPS结果表明,所有样品具有结晶良好的六方纤锌矿结构,Cr3+以替代Sn4+的形式掺杂进入到SnS2 晶格中。随着Cr掺杂量的增加,晶格常数发生膨胀。紫外可见吸收光谱(UV-vis)发现掺杂样品的光学带隙发生蓝移现象。傅里叶红外光谱(FT-IR)的吸收峰位并没有随着掺杂浓度的增加而发生变化。掺杂SnS2样品的光致发光(PL)谱图出现紫光、蓝光、黄光和红光4个发光峰。随着掺杂浓度增加,发光强度呈现明显的减小趋势,以纳米花Sn0.95Cr0.05S2样品的最低。色度图CIE表明,Sn1-xCrxS2样品显示黄色荧光发光。

 

关键字: Cr 掺杂;SnS2纳米花;稀磁半导体;微观结构;光学性能

Microstructure and optical properties of Cr doped SnS2 nanoflowers
ZHAO Wen-hua1, 2, WEI Zhi-qiang1, 2, LIANG Jia-hao2, MA Long2, ZHANG Xu-dong2, JIANG jin-long2

1. State Key Laboratory of Advanced Processing and Recycling Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;
2. School of Science, Lanzhou University of Technology, Lanzhou 730050, China

Abstract:With Cr doping concentration, the impact of performance on crystal structure, morphology and optical properties of the nanoflower-like Sn1-xCrxS2 (x=0, 0.01, 0.03, 0.05 and 0.07) synthesized by hydrothermal method with triton as modifier were investigated. The XRD, EDS and XPS results show all the samples possess a well-crystallized hexagonal wurtzite structure, while the doping of Cr3+ in the sample is substituted in the form of Sn4+. The lattice constant expands with the increase of Cr doping. The UV-vis absorption spectra reveal the optical band gaps of doped samples occur blueshift. The absorption peak of Fourier transform infrared spectroscopy (FT-IR) do not change with increasing doping concentration. The photoluminescence (PL) spectra show that the SnS2 samples possess four peaks, which is purple, blue, yellow and red. The luminescence intensity of the Sn0.95Cr0.05S2 nanoflowers is the lowest with a significant decrease trend. CIE results demonstrate that the Sn1-xCrxS2 samples show yellow fluorescence emission.

 

Key words: Cr doped; SnS2 nanoflower; diluted magnetic semiconductor; microstructure; optical property

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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