A New Route to Synthesize MnSe Thin Films by Chemical Bath Deposition Method

Manganese selenide (MnSe) crystalline thin film was produced with chemical bath deposition on substrates (commercial glass). Transmittance, absorption, optical band gap and refractive index were investigated by UV/VIS spectrum. The hexagonal form was observed in the structural properties in XRD. The structural and optical properties of the MnSe thin films were analyzed at different pHs. SEM and EDX analysis were used for the surface analysis in the films. The films had the best crystalline at pH: 9. At pHs of 11 and 10 the MnSeO4 structure was observed. The films with the lowest film thickness were found in baths prepared with pH: 11. The highest refractive index was observed in films produced with a pH of 10 at a film density of 1.96. The grain size of MnSe thin films has a higher value at pH: 9.本研究采用化学浴沉积法在商用玻璃衬底上制备了硒化锰（MnSe）结晶薄膜。通过紫外-可见（UV/VIS）光谱表征了该薄膜的透射率、吸收率、光学带隙与折射率。X射线衍射（XRD）结构分析结果显示，薄膜微观结构为六方相。针对不同pH值条件下制备的硒化锰薄膜，分析了其结构与光学特性。采用扫描电子显微镜（SEM）与能量色散X射线光谱（EDX）对薄膜表面进行了表征分析。当pH为9时，薄膜的结晶质量最优。当pH为10和11时，薄膜中出现了MnSeO4相结构。pH为11的化学浴制备的薄膜厚度最小。在薄膜密度为1.96的试样中，pH为10制备的薄膜展现出最高的折射率。pH为9时制备的硒化锰薄膜晶粒尺寸更大。