共查询到16条相似文献,搜索用时 63 毫秒
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基于化学水浴沉积法以硫脲为硫源,醋酸镉为镉源,氨水作为缓冲剂,制备太阳能电池用半导体薄膜硫化镉(CdS),研究不同的退火温度和是否涂敷CdCl2溶液对CdS薄膜的影响。采用X线衍射仪、电子扫描电镜和紫外/可见光分光光度计研究了不同退火工艺对硫化镉薄膜的结构、形貌及光学特性的影响。实验表明,悬涂CdCl2溶液退火处理可明显改善CdS薄膜的结晶及其光学性质,最佳退火温度为400℃,退火时间为60min。 相似文献
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采用真空热蒸发(VTE)的方法制备了CdS多晶薄膜,研究了不同衬底温度对其微观结构与光电性能的影响。结果显示,不同衬底温度下制备的CdS薄膜均属于六方相多晶结构且具有(002)择优取向;随着衬底温度的升高,(002)特征衍射峰强度增加,半高宽变小,相应薄膜结晶度增大;由CdS薄膜的透射光谱可知,在500~1 000nm波段平均透过率均超过80%,光学带隙随着衬底温度的升高而增大(2.44~2.56eV),表明真空热蒸发方法制备的CdS薄膜可以作为CIGS薄膜太阳电池的缓冲层。将真空热蒸发法制备CdS薄膜与磁控溅射法制备CIGS薄膜太阳电池相结合,在同一真空室内得到了CIGS薄膜太阳电池器件,为CIGS薄膜太阳电池的工业化推广提供了新途径。 相似文献
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用磁控溅射的方法在透明导电氧化物衬底上制备了CdS薄膜,制备时的衬底温度为30~200℃.X射线衍射测试结果表明在这一条件下制备的CdS薄膜是六角纤锌矿的多晶结构.扫描电子显微镜结果显示薄膜具有较好的晶体质量,这一结论也和拉曼光谱、紫外-可见吸收光谱、光致发光光谱的结果一致.拉曼光谱显示CdS薄膜内部的压应力随着制备温度的提高而增大. 相似文献
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Antibacterial capabilities of nanocrystalline cadmium sulfide (CdS) thin films have been developed against Gram-positive and Gram-negative bacteria in dark and sunlight at 60 °C. For this purpose, a strain of Gram-positive Staphylococcus aureus, and two strains of Gram-negative bacteria (Pseudomonas aeruginosa, and Escherichia coli) were used. The nanocrystalline CdS thin films have been prepared using a chemical bath deposition (CBD) method at different thicknesses (50, 80 and 100 nm). The different deposition parameters including the speed of rotation of substrate, temperature of chemical bath, pH of solution and time of the deposition were optimized. The Polyvinylpyrrollidone (PVP) was successfully used as capping agent in order to stop the agglomeration in the CdS thin films. It was found that, CdS thin films have remarkable antibacterial activity in dark and sunlight and it could be applied as antimicrobial agent in medical field. In order to confirm the crystalline structure of CdS thin films, the polycrystalline nature of the deposited CdS thin films with hexagonal structure was obtained. Furthermore, the structural parameters including lattice parameters, cell volume, the space group, average grain size, dislocation density and the strain have been calculated. The topography and surface roughness of the CdS thin films have been studied before and after the bacteriostatic effect using Scanning Electron Microscopy (SEM). Furthermore, the compositions of nanocrystalline CdS thin films have been evaluated using Energy Dispersive X-ray emission (EDX) and a Transmission Electron Microscope (TEM). Based on the optical measurements in the range of 300–2500 nm, the band gap energy of the prepared CdS thin films was found to be 2.4 eV. 相似文献
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采用化学水浴法和磁控溅射法分别在AZO、FTO、ITO透明导电玻璃衬底上制备了CdS薄膜,利用扫描电镜、XRD以及透射光谱等测试手段,研究了两种制备方法对不同衬底生长CdS薄膜形貌、结构和光学性能的影响.研究结果表明,不同方法制备的CdS薄膜表面形貌均依赖于衬底的类型,水浴法制备的CdS薄膜晶粒度较大,表面相对粗糙.不同方法制备的CdS薄膜均为立方相和六角相的混相结构,溅射法制备的多晶薄膜衍射峰清晰、尖锐,结晶性较好.水浴法制备的CdS薄膜透过率整体低于溅射法,但在短波处优势明显. 相似文献