title: Nonvolatile memory thin-film transistors using biodegradable chicken albumen gate insulator and oxide semiconductor channel on eco-friendly paper substrate.
abstract: Nonvolatile memory thin-film transistors (TFTs) fabricated on paper substrates were proposed as one of the eco-friendly electronic devices. The gate stack was composed of chicken albumen gate insulator and In-Ga-Zn-O semiconducting channel layers. All the fabrication processes were performed below 120 °C. To improve the process compatibility of the synthethic paper substrate, an Al2O3 thin film was introduced as adhesion and barrier layers by atomic layer deposition. The dielectric properties of biomaterial albumen gate insulator were also enhanced by the preparation of Al2O3 capping layer. The nonvolatile bistabilities were realized by the switching phenomena of residual polarization within the albumen thin film. The fabricated device exhibited a counterclockwise hysteresis with a memory window of 11.8 V, high on/off ratio of approximately 1.1 × 10(6), and high saturation mobility (μsat) of 11.5 cm(2)/(V s). Furthermore, these device characteristics were not markedly degraded even after the delamination and under the bending situration. When the curvature radius was set as 5.3 cm, the ION/IOFF ratio and μsat were obtained to be 5.9 × 10(6) and 7.9 cm(2)/(V s), respectively.
authors: Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University , Yongin, Gyeonggi-do 446-701, Republic of Korea.
authors: So-Jung
authors: SJ
authors: Kim
authors: Da-Bin
authors: DB
authors: Jeon
authors: Jung-Ho
authors: JH
authors: Park
authors: Min-Ki
authors: MK
authors: Ryu
authors: Jong-Heon
authors: JH
authors: Yang
authors: Chi-Sun
authors: CS
authors: Hwang
authors: Gi-Heon
authors: GH
authors: Kim
authors: Sung-Min
authors: SM
authors: Yoon
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D000818:Animals; D002645:Chickens; D004560:Electricity; D004867:Equipment Design; D018625:Microscopy, Atomic Force; D010047:Ovalbumin / Q000737:chemistry* / Q000378:metabolism; D010209:Paper; D011126:Polypropylenes / Q000737:chemistry; D014173:Transistors, Electronic
chemical_list: D011126:Polypropylenes; D010047:Ovalbumin; D000537:Aluminum Oxide
keywords: chicken albumen dielectric; eco-friendly device; nonvolatile memory; oxide semiconductor; paper substrate