NDLI: Characterization of ZnO thin films obtained by ultrasonic spray pyrolysis for application in UV photoconductive detectors

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Characterization of ZnO thin films obtained by ultrasonic spray pyrolysis for application in UV photoconductive detectors

Content Provider	Scilit
Author	Osorno, Mario Alberto Acosta Alcántara-Iniesta, Salvador Alvarado, Jose Joaquin Young, Chadwin Mejia, Israel García, Maribel Ramos-Serrano, Juan Ramón Juarez-Diaz, Gabriel
Copyright Year	2019
Description	Journal: Materials Research Express This paper presents the structural, optical and electrical characterization of ZnO thin films obtained by ultrasonic spray pyrolysis (USP). Based on these characterizations, the deposition conditions that provide films with higher crystallinity and greater absorption were determined. The resistivity of the films was reduced by annealing in nitrogen environment and was measured with a 4-point probe. The annealed films were characterized by AFM, SEM and XPS. Two photoconductive detectors were fabricated, with high and low resistivity films, and the responsivity was obtained for both. The two detectors showed a high UV response, but the photodetector developed from the annealed film demonstrated a maximum responsivity of 3000 A/W at 369 nm with a 2 V bias voltage. This result is higher than results obtained with low-cost techniques such as sol-gel, pneumatic spray pyrolysis, and even some results reported by sputtering.
Related Links	https://iopscience.iop.org/article/10.1088/2053-1591/ab4fc3/pdf
ISSN	20531591
e-ISSN	20531591
DOI	10.1088/2053-1591/ab4fc3
Journal	Materials Research Express
Issue Number	11
Volume Number	6
Language	English
Publisher	IOP Publishing
Publisher Date	2019-09-01
Access Restriction	Open
Subject Keyword	Journal: Materials Research Express Condensed Matter Physics Spray Pyrolysis
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Metals and Alloys Biomaterials Electronic, Optical and Magnetic Materials Polymers and Plastics

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