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Noticeably enhanced photosensing properties of Fe-doped Bi2S3 thin films developed by nebulizer spray pyrolysis technique for photosensor applications
Sensors and Actuators A: Physical ( IF 4.1 ) Pub Date : 2022-07-16 , DOI: 10.1016/j.sna.2022.113759
S. Rajeswari , M. Mohamad Ibrahim , I. Loyola Poul Raj , Jabir Hakami , Mohd Imran , S. AlFaify , Mohd. Shkir

The current study uses the nebulized spray pyrolysis (NSP) approach to study the effect on crystalline, morphological, electrical conductivity, and photo detector properties of Bi2S3 thin films through Fe doping produced on amorphous glass substrates. The orthorhombic structure of Bi2S3 thin films for the pristine and Fe doped Bi2S3 thin films was confirmed by X-ray diffraction studies. The XRD data of the samples were used to calculate crystallite size value and maximum crystallite size value of 38 nm was observed for 2% Fe-doped Bi2S3 film. FESEM image of 2% Fe-doped film shows the distribution of uniform grains. With the increase in concentration of the Fe dopants from 0% to 5%, the energy gap value changes from 2.2 to 2.47 eV. The 2% Fe-doped Bi2S3 film possesses highest responsivity (9.60 × 10-2 AW-1), external quantum efficiency (22.4%), and detectivity (1.34 × 1010 Jones) properties suggests that the sample might be better suited for the application of the photo detectors.



中文翻译:

通过雾化器喷雾热解技术开发的用于光传感器应用的 Fe 掺杂 Bi2S3 薄膜的光敏性能显着增强

目前的研究使用雾化喷雾热解 (NSP) 方法来研究通过在非晶玻璃基板上产生的 Fe 掺杂对 Bi 2 S 3薄膜的结晶、形态、电导率和光电探测器性能的影响。通过X射线衍射研究证实了原始和Fe掺杂Bi 2 S 3薄膜的Bi 2 S 3薄膜的正交结构。样品的 XRD 数据用于计算微晶尺寸值,对于 2% Fe 掺杂的 Bi 2 S 3观察到的最大微晶尺寸值为 38 nm电影。2% Fe 掺杂薄膜的 FESEM 图像显示了均匀晶粒的分布。随着 Fe 掺杂剂浓度从 0% 增加到 5%,能隙值从 2.2 变为 2.47 eV。2% Fe 掺杂的Bi 2 S 3薄膜具有最高的响应率(9.60 × 10 -2 AW -1)、外量子效率(22.4%)和探测率(1.34 × 10 10 Jones)特性表明样品可能更好适用于光电探测器的应用。

更新日期:2022-07-16
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