(1. 蘭州理工大學(xué) 省部共建有色金屬先進(jìn)加工與再利用國家重點(diǎn)實(shí)驗(yàn)室，蘭州 730050；
2. 蘭州理工大學(xué) 理學(xué)院，蘭州 730050)
摘 要: 以曲拉通為修飾劑，通過水熱法合成花狀Sn1-xCrxS2納米晶(x=0、0.01、0.03、0.05和0.07)，研究Cr 摻雜濃度對(duì)樣品的晶體結(jié)構(gòu)、形貌和光學(xué)性能的影響。XRD、EDS 和XPS結(jié)果表明，所有樣品具有結(jié)晶良好的六方纖鋅礦結(jié)構(gòu)，Cr3+以替代Sn4+的形式摻雜進(jìn)入到SnS2 晶格中。隨著Cr摻雜量的增加，晶格常數(shù)發(fā)生膨脹。紫外可見吸收光譜(UV-vis)發(fā)現(xiàn)摻雜樣品的光學(xué)帶隙發(fā)生藍(lán)移現(xiàn)象。傅里葉紅外光譜(FT-IR)的吸收峰位并沒有隨著摻雜濃度的增加而發(fā)生變化。摻雜SnS2樣品的光致發(fā)光(PL)譜圖出現(xiàn)紫光、藍(lán)光、黃光和紅光4個(gè)發(fā)光峰。隨著摻雜濃度增加，發(fā)光強(qiáng)度呈現(xiàn)明顯的減小趨勢，以納米花Sn0.95Cr0.05S2樣品的最低。色度圖CIE表明，Sn1-xCrxS2樣品顯示黃色熒光發(fā)光。
關(guān)鍵字: Cr 摻雜；SnS2納米花；稀磁半導(dǎo)體；微觀結(jié)構(gòu)；光學(xué)性能
（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
