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The Influence of CBD Parameters on the Energy Gap of ZnS Narcissus-Like Nanostructured Thin Films
Coatings ( IF 3.4 ) Pub Date : 2021-09-17 , DOI: 10.3390/coatings11091131
Mohammed Hussein Khalil , Raghad Y. Mohammed , Mohammed Aziz Ibrahem

Recently, the efficient preparation techniques of zinc sulfide (ZnS) nanostructured films have drawn great attention due to their potential applications in optoelectronics. In this study, the low-cost and high-yield chemical bath deposition (CBD) technique was used to deposit ZnS nanostructured thin films. The effect of various deposition parameters such as time, pH, precursor concentration, and temperature on the morphology and energy bandgap (Eg) of the prepared thin films were investigated. The characterization of the prepared thin films revealed the formation of polycrystalline ZnS with Narcissus-like nanostructures. Moreover, the optical characterization showed inverse proportionality between both the transmission and Eg of the nanostructured thin films and the variation of the deposition parameters. A range of different Eg values between 3.92 eV with 20% transmission and 4.06 eV with 80% transmission was obtained. Tuning the Eg values and transmission of the prepared nanostructured films by manipulating the deposition parameters of such an efficient technique could lead to applications in optoelectronics such as solar cells and detectors.

中文翻译:

CBD参数对ZnS类水仙纳米结构薄膜能隙的影响

近年来,硫化锌(ZnS)纳米结构薄膜的高效制备技术因其在光电领域的潜在应用而备受关注。在这项研究中,低成本和高产量的化学浴沉积 (CBD) 技术用于沉积 ZnS 纳米结构薄膜。研究了各种沉积参数,如时间、pH、前体浓度和温度对制备的薄膜的形态和能带隙 (Eg) 的影响。制备的薄膜的表征揭示了具有类似水仙的纳米结构的多晶 ZnS 的形成。此外,光学表征显示纳米结构薄膜的透射率和 Eg 与沉积参数的变化之间成反比。3 之间的不同 Eg 值范围。获得了具有 20% 透射率的 92 eV 和具有 80% 透射率的 4.06 eV。通过操纵这种有效技术的沉积参数来调整制备的纳米结构薄膜的 Eg 值和透射率,可能会导致光电子学中的应用,如太阳能电池和探测器。
更新日期:2021-09-17
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