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

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 × 10 3 sensitivity when exposed to 355 nm UV-light (1.24 mW/cm 2 ) 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/cm 2 ) 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.