Advanced Side-Impermeability Characteristics of Fluorinated Organic-Inorganic Nanohybrid Materials for Thin Film Encapsulation

• Published in: Macromolecular research Vol. 29; no. 4; pp. 313 - 320
• Main Authors: Kwon, Hyeok-jin, Hong, Jisu, Le, Hong Nhung, Jung, Cheolmin, Park, Chan Eon, Moon, Hong Chul, Kim, Juyoung, Kim, Se Hyun
• Format: Journal Article
• Language: English
• Published: Seoul The Polymer Society of Korea 01.04.2021; Springer Nature B.V; 한국고분자학회
• Subjects: Aluminum oxide; Atomic layer epitaxy; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Commercialization; Complex Fluids and Microfluidics; Encapsulation; Fluorination; Hydrophobicity; Nanochemistry; Nanotechnology; Optoelectronic devices; Permeability; Physical Chemistry; Polymer Sciences; Soft and Granular Matter; Sol-gel processes; Substrates; Thin films; 고분자공학; side permeation; plasma-enhanced atomic layer deposition (PEALD); fluorinated; thin film encapsulation (TFE); organic-inorganic nanohybrid materials; sol-gel
• ISSN: 1598-5032; 2092-7673
• DOI: 10.1007/s13233-021-9035-2

In this study, we introduce a sol-gel based fluorinated nanohybrid materials named FAGPTi to fabricate organic-inorganic hybrid thin film encapsulation (TFE) with plasma-enhanced atomic layer deposition (PEALD)-based Al 2 O 3 for optoelectronics. A systematic analysis of the FAGPTi film on various substrates reveals that the FAGPTi films fully covered all parts of the substrate, showing low roughness, high hydrophobicity, and good flexibility. These results demonstrate that FAGPTi is able to protect water corrosive Al 2 O 3 from the outer invasion of moisture or water. Therefore, the TFE with alternatively stacked Al 2 O 3 and FAGPTi shows excellent barrier film performance as low as 6.33 × 10 −5 g m −2 day −1 s at accelerated conditions (60 °C and 90% RH) and high visible transmittance above 95% in four pairs. In particular, the FAGPTi films displayed advanced side impermeability, with values comparable to those of the oxide layer. Thus, we expect our systematic work with FAGPTi layers to provide insights into barrier films to advance their integration in flexible optoelectronic devices and thereby accelerate their commercialization.