Publicação: Application of Taguchi arrays using DOE for optimizing processing and understanding sputtered coated ZnO TFTs
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This study applies the Taguchi orthogonal array (OA) to improve and optimize the performance of ZnO thin-film transistors (TFT). Radiofrequency (RF) sputtering method was used to deposit the active layer of TFTs. The annealing temperature, environmental conditions, sputter rate, and thin-film thickness were the parameters whose impact on output parameters like mobility was analyzed in the process optimization using design of experiment (DOE). The ZnO TFTs show state-of-the-art performance features, including high saturation mobility (0.83c), high Ion/Ioffratio (104). The optimal configuration was found to be high annealing temperature 450 °C under N2atmosphere, low sputter rate. This paper presents a method that can empower the fast optimization of metal oxide TFTs for future developments in the manufacturing process. If a full factorial design had been implemented, 64 tests would have been necessary, however in this work, we have reduced the number of tests to 9 only using Taguchi method.
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Metal oxide, Mobility, Optimization, Taguchi Orthogonal Array (OA), ZnO TFTs
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Inglês
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Materials Today: Proceedings, v. 46, p. 5757-5760.
