Abstract
Porous tin dioxide (SnO2) have been successfully synthesized by using in-situ thermal calcination precursors at different calcination conditions, including different calcination temperature, different calcination times, and zone heating. The as-synthesized SnO2 samples were characterized by XRD, FESEM, TEM, UV–vis DRS and fluorescence spectrometry. Flexible photodetectors were then fabricated on PET (polyethylene terephthalate) substrate. The porous SnO2-based flexible ultraviolet photodetectors have high flexible, lightweight, low-cost and high stability. Especially, the flexible device exhibits linear photocurrent behaviors and good sensitivity to ultraviolet light at wavelengths of 254 nm and 365 nm. Our result should be useful for creating high efficiency optoelectronic devices.
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