PAPER–BASED ZnO, ZnO:SnO2 AND SnO2 ULTRAVIOLET SENSORS
Abstract: Three
photoelectrical devices ZnO, ZnO:SnO2 and SnO2 are made on common pencil drawn
circuit over a regular paper as substrate. These three sensors are well capable
of detecting UV light and demonstrate features comparable to those of made with
complex and expensive techniques. The responses of these sensors are different
to the two UV spectra which are used as light sources. Explanation of sensors
responses relates samples energy gap values with the UV wavelengths energies and
intensities of the two applied UV spectra. Also the role of oxygen adsorption
on the variations of samples resistances is discussed. Measurements comparing
properties of the three sensors show better performance for ZnO sensor than the
two other sensors; but with longer rise and fall times.
Penulis: Reem Saadi Khaleel,
Salah Kaduri Haza’a
Kode Jurnal: jpfisikadd150930
