溶剂的溶解度对CZTS颗粒性能影响的研究

doi:10.11901/1005.3093.2016.134

材料研究学报

2016, Vol. 30

Issue (11): 861-867 DOI: 10.11901/1005.3093.2016.134

论文

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溶剂的溶解度对CZTS颗粒性能影响的研究

蒋诗旭¹,周超²,张天财²,高延敏¹

1. 江苏科技大学先进焊接技术省级重点实验室镇江 212003
2. 上海船舶工艺研究所上海 200032

Effect of Solubility Parameter of Alcohols Solvents on Performance of Cu₂ZnSnS₄ Particles

Shixu JIANG¹,Chao ZHOU²,Tiancai ZHANG²,Yanmin GAO^1,^*

1. Jiangsu Key Lab of Advanced Welding Technology, Jiangsu University of Science and Technology, Zhenjiang 212003, China
2. Shanghai Shipbuilding Technology Research Institute, Shanghai, 200032, China

引用本文:

蒋诗旭, 周超, 张天财, 高延敏. 溶剂的溶解度对CZTS颗粒性能影响的研究[J]. 材料研究学报, 2016, 30(11): 861-867.
Shixu JIANG, Chao ZHOU, Tiancai ZHANG, Yanmin GAO. Effect of Solubility Parameter of Alcohols Solvents on Performance of Cu₂ZnSnS₄ Particles[J]. Chinese Journal of Materials Research, 2016, 30(11): 861-867.

全文: PDF(2412 KB) HTML

摘要:

通过溶剂热法, 以含有PVP的醇类作溶剂, 以CuCl₂2H₂O、Zn(Ac)₂2H₂O、SnCl₄5H₂O作金属源, 硫脲作硫源, 在一定条件下反应, 通过XRD、Raman、SEM、EDS、TEM、UV-Vis以及电化学分析系统研究醇类溶剂溶解度对CZTS颗粒的物相、结构、形貌以及光电性能的影响。结果表明: 所选溶剂溶解度不同, 对得到的CZTS颗粒的结晶性、形貌、原子比以及光电性能均有相应的影响; 当选择溶解度为32.1的乙二醇作溶剂时, 合成的颗粒结晶性较好, 颗粒形貌为表面嵌有薄片的微球, 颗粒表面缺陷形态为贫铜富锌结构, 光学带隙为1.47 eV, 与太阳能电池所需的最佳带隙接近, 薄膜电阻率为45.86 Ωm。

关键词 ：材料合成与加工工艺, 溶剂热法, 溶解度, 醇类溶剂, CZTS

Abstract：

Cu₂ZnSnS₄(CZTS) particles were synthesized by a facile solvothermal method in polyvinylpyrrolidone (PVP) containing alcohols solvent, with CuCl₂2H₂O, Zn(Ac)₂2H₂O and SnCl₄5H₂O as metal precursor, and thiourea as sulfur source, respectively. The effect of the variation of solubility parameter of alcohols solvents on crystal structure, composition, morphology and absorption spectra of the synthesized CZTS particles were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, transmission electron microscopy (TEM) with energy dispersive X-ray spectroscopy(EDS), UV-Vis spectroscopy and electrochemical analyzer. The results reveal that the solubility parameter of alcohols solvent has a certain influence on the crystallization, morphology, atomic ratios and photoelectric properties of the as-synthesized CZTS particles. The optimum alcohols solvent is ethylene glycol.The crystallization of CZTS particles synthesized under the above condition is pure and complete, and the CZTS particles with flaky facets are uniform and mono-dispersed. The atomic ratio of elements for CZTS particles is close to stoichiometric coefficient and the band gap of the products is about 1.47 eV, which is close to the optimum value for solar photoelectric conversion. The resistivity of CZTS is 45.86 Ωm.

Key words： synthesizing and processing techniques for materials solvothermal method solubility parameter alcohols solvent CZTS

收稿日期: 2016-03-14

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https://www.cjmr.org/CN/10.11901/1005.3093.2016.134 或 https://www.cjmr.org/CN/Y2016/V30/I11/861

图1 不同溶解度的醇类溶剂中合成的CZTS颗粒XRD图

图2 不同溶解度的醇类溶剂中合成的CZTS颗粒Raman图

图3 不同溶解度的醇类溶剂中合成的CZTS颗粒SEM图

图4 不同溶解度的醇类溶剂中合成的CZTS颗粒TEM图

表1 不同溶解度的醇类溶剂中合成的CZTS颗粒原子比

图5 不同溶解度的醇类溶剂中合成的CZTS颗粒原子比变化趋势图

图6 CZTS颗粒的紫外-可见光吸收光谱图

图7 不同溶解度的醇类溶剂中合成的CZTS颗粒制备成薄膜后的I-V曲线

图8 醇类溶剂溶解度与CZTS颗粒电阻率之间的关系

表2 不同溶解度的醇类溶剂中合成的CZTS颗粒电阻率

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