添加Cu增强旋涂CdS薄膜的光电流
Photocurrent enhancement of spin coated CdS thin films by adding Cu
摘要：
采用旋涂法在不同的旋涂速度下制备了不同时间的Cu掺杂CdS薄膜。薄膜随后在空气中在不同温度下退火不同时间段以使薄膜形式的CdS相结晶。利用X射线衍射仪、紫外-可见光谱仪和太阳模拟器对薄膜进行了表征.根据XRD图谱，微量Cu的加入没有改变CdS的结构。然而，光学带隙随着Cu的百分比逐渐减小，如预期的。结果表明，在KI/I2电解液中测得的光电流、填充因子和效率随着Cu的加入量的增加而逐渐增大。在不改变CdS结构的情况下，可以提高其光伏性能。高效CdS薄膜在太阳能电池工业中具有潜在的应用前景。
英文摘要：
Cu added CdS films were synthesized using spin coating technique at different spin speeds for different time durations. Films were subsequently annealed at different temperatures for different time periods in air to crystallize the phase of CdS in thin film form. Films were characterized using XRD, UV- visible spectrometer and solar simulator. According to XRD patterns, addition of trace amount of Cu did not change the structure of CdS. However, the optical band gap gradually decreases with percentage of Cu as expected. As a result, the photocurrent, fill factor and efficiency measured in KI/I2 electrolyte gradually increase with the amount of Cu. Photovoltaic properties could be improved without altering the structure of CdS. Efficiency enhanced CdS films find potential applications in solar cell industry.
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