Synthesis and characterization of ZnO nanoflowers by using simple spray pyrolysis technique

• Published in: Solid-state electronics 2022-03, Vol.189, p.108225, Article 108225
• Main Authors: Abdulrahman, Ahmed Fattah, Abd-Alghafour, N.M.
• Format: Article
• Language: English
• Subjects: Low cost; Simple spray pyrolysis; UV detector; ZnO nanoflowers
• ISSN: 0038-1101; 1879-2405
• DOI: 10.1016/j.sse.2021.108225

[Display omitted] •The fabrication of UV-detector based on the ZnO Nanoflowers by using simple spray pyrolysis technique on porous silicon substrates for the first time.•The device demonstrated low dark current and high sensitivity when exposed to UV light.•The detector can be a promising candidate for commercially integrated photo-electronic applications as a low cost UV detector. For perhaps the first time, we documented the manufacturing of a Ultraviolet detector focused on ZnO nanoflowers utilized a simple spray pyrolysis process on porous silicon substrates. The morphological, structural, and optical characteristics of the sample were investigated using FESEM, X-ray system, photoluminescence spectroscopy (PL), and a UV–vis spectroscopy. The device demonstrated 3.07 × 103 sensitivity when exposed to 355 nm UV-light (1.24 mW/cm2) at 3 applied voltages. In contrast, dark current was 2.8 × 10−6 A, and the photodetector's internal gain was 12.75. Moreover, the rise time and full time were determined to be 1.2 sec and 1.8 sec under UV-light (355 nm, 1.24 mW/cm2) at 3 V applied voltages. Every-one of these results indicates that such a high quality Ultraviolet-detector could become a reasonable alternative for industrially interconnected photo-electronic application fields as a low-cost UV detector.