Layered structure MX₂ (M = transition metal, X = S, Se and Te) chalcogenides have rich physic properties and potential applications. While it is still a challenge to prepare the chalcogenides by solvothermal method. In this work, we reported a new solution method to prepare CrSe₂ sub-micro-flakes on different substrates. The surface morphologies, structures and compositions of the precursor CrSe₂(en)_1/2 and CrSe₂ were investigated by SEM, XRD, thermogravimetric, IR and Raman spectra. The CrSe₂ flakes with the sizes of 5–15 µm were obtained on both glass and (110) Si crystalline substrates. The formation mechanism of CrSe₂ sub-micro-flakes is suggested.

层状结构MX ₂（M =过渡金属，X = S，Se和Te）硫属化物具有丰富的物理性质和潜在应用。尽管通过溶剂热法制备硫属元素化物仍然是一个挑战。在这项工作中，我们报告了一种在不同基板上制备CrSe ₂亚微米薄片的新解决方法。通过SEM，XRD，热重，IR和拉曼光谱研究了前驱体CrSe ₂（en）_1/2和CrSe ₂的表面形貌，结构和组成。在玻璃和（110）硅晶体衬底上均获得了尺寸为5-15 µm的CrSe ₂薄片。提出了CrSe ₂亚微米薄片的形成机理。