Ali Amira H, Ahmed Ashour M, Abass Safaa M, Abdel-Khaliek Ahmed A, Shaban Mohamed, Al-Hmoud Mohannad, El Khalik S Abd, Rabia Mohamed
Nanomaterials Science Research Laboratory, Chemistry Department, Faculty of Science, Beni-Suef University Beni-Suef Egypt
Physics Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU) Riyadh 11623 Saudi Arabia.
RSC Adv. 2025 Apr 8;15(14):11085-11097. doi: 10.1039/d4ra08903k. eCollection 2025 Apr 4.
Perovskite materials have emerged as up-and-coming candidates for optoelectronic devices. This study developed a photodetector by depositing a halide double perovskite material, KI-doped CsSnCl (KI:CTC), onto a CuO substrate. Extensive analyses examined the photodetector's optical, structural, and morphological properties. The bilayer structure of KI:CTC exhibited a well-defined cubic crystal structure with a crystal size of 37.73 nm. The photodetector's band gap ( ) was accurately measured to be 1.55 eV. The performance parameters of the KI:CTC/CuO photodetector were rigorously evaluated. At an incident photon wavelength of 390 nm, a remarkable photoresponsivity (PR) of 143.0 mA W, an impressive specific detectivity (D*) of 7.95 × 10 Jones, and a high external quantum efficiency (EQE) of 61.0% were achieved. Additionally, the stability and underlying mechanism of the photodetector were thoroughly discussed. The results suggest that the KI:CTC/CuO photodetector exhibits effective light detection, positioning it as a promising candidate for future optoelectronic applications.
钙钛矿材料已成为光电器件领域崭露头角的候选材料。本研究通过在CuO衬底上沉积卤化物双钙钛矿材料KI掺杂的CsSnCl（KI:CTC）制备了一种光电探测器。大量分析研究了该光电探测器的光学、结构和形态特性。KI:CTC的双层结构呈现出明确的立方晶体结构，晶体尺寸为37.73纳米。该光电探测器的带隙精确测量为1.55电子伏特。对KI:CTC/CuO光电探测器的性能参数进行了严格评估。在入射光子波长为390纳米时，实现了143.0毫安/瓦的显著光响应度（PR）、7.95×10琼斯的令人印象深刻的比探测率（D*）以及61.0%的高外部量子效率（EQE）。此外，还深入讨论了该光电探测器的稳定性和潜在机制。结果表明，KI:CTC/CuO光电探测器表现出有效的光探测能力，使其成为未来光电子应用的有前途的候选材料。
