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首页> 外文期刊>IEEE transactions on nanotechnology >Synthesis of CZTSe Nanocrystal Prepared by a Facile Route in Coordinating Solvent From Elemental Sources
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Synthesis of CZTSe Nanocrystal Prepared by a Facile Route in Coordinating Solvent From Elemental Sources

机译：元素源配位溶剂的简易合成法合成CZTSe纳米晶

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This paper reports the preparation of Cu$_{2}$ZnSnSe $_{4}$ (CZTSe) nanocrystals from elemental sources through the application of various coordinating solvents. The CZTSe nanocrystals were synthesized by mixing metals in oleylamine (OLA) and isophorondiamine (IPDA) at a ratio of 1:3 as well as a Se solution in trioctylphosphine (TOP) under N $_{2}$ flow at atmospheric pressure at a reaction temperature of 235 °C. X-ray diffraction and Raman spectroscopy were used to track the reaction mechanisms associated with various solvents. A growth mechanism, distinct from that associated with TOP/OLA, promoted the formation of nanoparticles and improved the reactivity provided by the addition of IPDA solvent through double N-chelation. The reaction mechanism involved in stannite Cu$_{2}$ZnSnSe $_{4}$ phase crystallization from Cu $_{2}$SnSe$_{3}$ and ZnSe is supported by theoretical analysis. The monodispersed CZTSe nanocrystals are polycrystalline and 20–30 nm in size. Optical measurements revealed a direct band gap of 1.42 eV. This study presents a relatively simple, low cost coordinating solvent route for the synthesis of CZTSe nanoparticles, applicable to the fabrication of low-cost thin-film solar cells.
机译：本文报告了制备Cu $ _ {2} $ ZnSnSe $ _ {4} $ （CZTSe）纳米晶体是通过应用各种配位溶剂从元素来源获得的。通过将金属以1：3的比例混合在油胺（OLA）和异佛尔酮二胺（IPDA）中以及硒在三辛基膦（TOP）中的N溶液下合成CZTSe纳米晶体。 “ TeX“> $ _ {2} $ 在大气压下于235°C的反应温度下流动。 X射线衍射和拉曼光谱用于跟踪与各种溶剂相关的反应机理。一种不同于TOP / OLA的生长机理，促进了纳米颗粒的形成，并改善了通过双N螯合添加IPDA溶剂提供的反应性。锡矿中的反应机理Cu <分子式==“ inline”> $ _ {2} $ ZnSnSe <分子式= inline“> $ _ {4} $ 从Cu $ _ {2} $ 的相结晶公式> SnSe $ _ {3} $ 和ZnSe受理论分析支持。单分散的CZTSe纳米晶体是多晶的，尺寸为20–30 nm。光学测量显示直接带隙为1.42 eV。这项研究为CZTSe纳米粒子的合成提出了一种相对简单，低成本的配位溶剂路线，适用于制造低成本的薄膜太阳能电池。

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