Title Page
Contents
ABSTRACT 9
Ⅰ. Introduction 11
Ⅱ. METHODS 14
1. Fabrication of R2R - printed CNT transistor 14
2. AFM Image acquisitions for CNT network morphology characterization. 15
3. Image - to - image translation Machine learning training 20
4. Ab initio Calculation for ground truth simulation 25
Ⅲ. RESULT AND DISCUSSION 27
1. Characterization of CNT network morphology 27
1.1. Quantitative analysis of CNT network and Correlation between transistor performance 27
2. Machine learning training and validation of model 29
2.1. Investigating competing interactions in CNT network formation 29
2.2. Comparison AFM image before and after Machine learning 34
Ⅳ. CONCLUSIONS 37
Ⅴ. REFERENCES 40
ABSTRACT IN KOREAN 44
Figure 1. CNT AFM images corresponding to varying CNT concentration and associated I-V curves (a) Qualitative differences in CNT network... 16
Figure 2. AFM image processing diagram for R2R printed CNT-TFTs and images at each step. (a) AFM topography data images passed low-passed filtering... 19
Figure 3. Difference between 'Substrate + CNT' images and 'Substrate' images (a) The 'substrate + CNTs' images vary with concentration and... 22
Figure 4. Cycle GAN diagram for image-to-image translation machine learning training. The forwarding training of Cycle GAN model (gθ)...[이미지참조] 24
Figure 5. TFT performance characteristics as a function of junction density. (a) - (b) As the concentration increases, there's a rise in... 28
Figure 6. Ab initio Study of CNT Network Morphology with WSub-CNT / WCNT-CNT Interactions. As Sub-CNT interactions decrease, enhanced aggregation of...[이미지참조] 30
Figure 7. Changes in CNT network morphology based on Surface energy. (a) - (b) Various treatments (APTES, Plasma and Untreated) on the Si... 32
Figure 8. The various CNT network morphology (APTES, Plasma and untreated) AFM images by repeated printing. The morphology of CNT deposition varies... 33
Figure 9. An assortment of initial ground truth images and their post- machine learning iterations. (a) Through adjustments in the length,... 35
Figure 10. Comparing the extraction of CNT junctions from images before and after image-to-image translation using image processing.... 36