2023-03-13 アルゴンヌ国立研究所(ANL)
＜関連情報＞
- https://www.anl.gov/article/scientists-use-novel-technique-to-create-new-energyefficient-microelectronic-device
- https://onlinelibrary.wiley.com/doi/10.1002/adma.202308871
巨大なキャリア変調とユニークな位相制御のためのレドックス・ゲーティング Redox Gating for Colossal Carrier Modulation and Unique Phase Control
Le Zhang, Changjiang Liu, Hui Cao, Andrew J. Erwin, Dillon D. Fong, Anand Bhattacharya, Luping Yu, Liliana Stan, Chongwen Zou, Matthew V. Tirrell, Hua Zhou, Wei Chen
Advanced Materials Published: 06 January 2024
DOI:https://doi.org/10.1002/adma.202308871
Abstract
Redox gating, a novel approach distinct from conventional electrolyte gating, combines reversible redox functionalities with common ionic electrolyte moieties to engineer charge transport, enabling power-efficient electronic phase control. This study achieves a colossal sheet carrier density modulation beyond 1016 cm−2, sustainable over thousands of cycles, all within the sub-volt regime for functional oxide thin films. The key advantage of this method lies in the controlled injection of a large quantity of carriers from the electrolyte into the channel material without the deleterious effects associated with traditional electrolyte gating processes such as the production of ionic defects or intercalated species. The redox gating approach offers a simple and practical means of decoupling electrical and structural phase transitions, enabling the isostructural metal-insulator transition and improved device endurance. The versatility of redox gating extends across multiple materials, irrespective of their crystallinity, crystallographic orientation, or carrier type (n- or p-type). This inclusivity encompasses functional heterostructures and low-dimensional quantum materials composed of sustainable elements, highlighting the broad applicability and potential of the technique in electronic devices.
