利用熱注入合成法(Hot injection method)合成片狀CZTS產物，以Copper(II) acetate hydrate、Zinc acetate、Tin(IV) chloride為前驅物，Thiourea為硫源，並且以Ethylene glycol為反應溶劑進行合成，合成時間一個小時後即可獲得片狀CZTS產物。
再將產物以液相剝離法(Liquid phase exfoliation)進行聚集部分的展開與剝離，選擇以表面張力值47.70mN/m的Ethylene glycol為分散劑，因為具有一定的黏度性質可保護片狀結構避免被破壞，進行剝離過程使用震幅強度較大的探針式超聲波震盪機，結束後以串聯離心法分離片狀結構與尚未成功剝離的部分，並且依序收集不同面積大小的片狀產物。
最後利用Langmuir-Blodgett技術將片狀CZTS產物沉積於不同基板上，沉積過程以最佳參數表面壓為10mN/m的固態相進行成膜。最後分析鑑定沉積之片狀CZTS薄膜的表面型態、元素分布均勻性、單層CZTS厚度、表面親疏水性、化合物鑑定、光學與電學性質。

In this study, we synthesize 2D structure of CZTS compound by hot injection method. Utilizing copper(II) acetate hydrate, zinc acetate and tin(IV) chloride as cation metal precursor, and thiourea is sulfur precursor. 2D structure CZTS will be produced after reaction time reach 1h with argon condition and solvent is ethylene glycol.
Because strong van der Waals force between each layers structure of CZTS surface will cause part of product aggregation or stacking, we need to stretch or exfoliate CZTS layer before fabricate CZTS thin film on substrate. Here, we choose ethylene glycol with 47.70mN/m of surface tension as dispersion solvent while doing liquid phase exfoliation process. Due to similar surface tension between CZTS product and ethylene glycol. The other feature of ethylene glycol is higher viscosity, it can protect layer structure against destruction of ultra-sonication.
After exfoliation process is finish, we can control different centrifugation speed to remove aggregation product and collect different layer size-selection. Finally, deposit 2D CZTS structure on specific surface of substrate by Langmuir-Blodgett technique. The suitable parameter of surface pressure is 10mN/m. After that we analyze CZTS thin film layer property including surface morphology, uniformity, thickness, hydrophilicity, qualitative analysis, optics and electrical property.

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