Demonstration of the infrared detection of pyroelectric SnO2–Fe2O3 composite ﬁlms
The infrared (IR) detection capability of SnO2–Fe2O3 composite films is demonstrated. The samples were fabricated on glass substrates via spray pyrolysis at deposition temeratures of 240°C, 300°C, and 370°C. Raman spectroscopy confirmed the presence of SnO2 and Fe2O3 phases in the composite films. UV-Vis spectroscopy revealed that a variation of band gap was evident and was attributed to the segregation of the phases during deposition. It also showed that increasing the deposition temperature widens the direct band gap of the composite, approaching that of crystalline SnO2. Lastly, IR detection was demonstrated with the periodic illumination with IR radiation. The voltage response of the composite showed a maximum peak at 46.52 µV, due to the primary pyroelectric effect, and a plateau at 27.95 µV, due to the secondary pyroelectric effect.
By submitting their manuscript to the Samahang Pisika ng Pilipinas (SPP) for consideration, the Authors warrant that their work is original, does not infringe on existing copyrights, and is not under active consideration for publication elsewhere.
Upon acceptance of their manuscript, the Authors further agree to grant SPP the non-exclusive, worldwide, and royalty-free rights to record, edit, copy, reproduce, publish, distribute, and use all or part of the manuscript for any purpose, in any media now existing or developed in the future, either individually or as part of a collection.
All other associated economic and moral rights as granted by the Intellectual Property Code of the Philippines are maintained by the Authors.