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Zhu J, Hu S, Chen B, Wei S, Zhang Y, Wu X, Zou X, Lu X, Sun Q, Zhang DW, Ji L. Realization of tunable-performance in atomic layer deposited Hf-doped In2O3 thin film transistor via oxygen vacancy modulation. J Chem Phys 2024; 160:044706. [PMID: 38270240 DOI: 10.1063/5.0188101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 01/05/2024] [Indexed: 01/26/2024] Open
Abstract
Due to the limitation of inherent ultra-high electron concentration, the electrical properties of In2O3 resemble those of conductors rather than semiconductors prior to special treatment. In this study, the effect of various annealing treatments on the microstructure, optical properties, and oxygen vacancies of the films and transistors is systematically investigated. Our finding reveals a progressive crystallization trend in the films with increasing annealing temperature. In addition, a higher annealing temperature is also associated with the reduction in the concentration of oxygen vacancies, as well as an elevation in both optical transmittance and optical bandgap. Furthermore, with the implementation of annealing process, the devices gradually transform from no pronounced gate control to exhibit with excellent gate control and electrical performances. The atomic layer deposited Hf-doped In2O3 thin film transistor annealed at 250 °C exhibits optimal electrical properties, with a field-effect mobility of 18.65 cm2 V-1 s-1, a subthreshold swing of 0.18 V/dec, and an Ion/Ioff ratio of 2.76 × 106. The results indicate that the impact of varying annealing temperatures can be attributed to the modulation of oxygen vacancies within the films. This work serves as a complementary study for the existing post-treatment of oxide films and provides a reliable reference for utilization of the annealing process in practical applications.
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Affiliation(s)
- Jiyuan Zhu
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Shen Hu
- School of Microelectronics, Fudan University, Shanghai 200433, China
- Jiashan Fudan Institute, Jiashan 314100, China
| | - Bojia Chen
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Shice Wei
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Yu Zhang
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Xuefeng Wu
- Shanghai Integrated Circuit Manufacturing Innovation Center Co., Ltd., Shanghai 201203, China
| | - Xingli Zou
- State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferrometallurgy, and School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
| | - Xionggang Lu
- State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferrometallurgy, and School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
| | - Qingqing Sun
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - David W Zhang
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Li Ji
- School of Microelectronics, Fudan University, Shanghai 200433, China
- Jiashan Fudan Institute, Jiashan 314100, China
- Hubei Yangtz Memory Laboratories, Wuhan 430205, China
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Shen S, Yi J, Sun Z, Guo Z, He T, Ma L, Li H, Fu J, Lee C, Wang ZL. Human Machine Interface with Wearable Electronics Using Biodegradable Triboelectric Films for Calligraphy Practice and Correction. NANO-MICRO LETTERS 2022; 14:225. [PMID: 36378352 PMCID: PMC9666580 DOI: 10.1007/s40820-022-00965-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/05/2022] [Indexed: 05/26/2023]
Abstract
Letter handwriting, especially stroke correction, is of great importance for recording languages and expressing and exchanging ideas for individual behavior and the public. In this study, a biodegradable and conductive carboxymethyl chitosan-silk fibroin (CSF) film is prepared to design wearable triboelectric nanogenerator (denoted as CSF-TENG), which outputs of Voc ≈ 165 V, Isc ≈ 1.4 μA, and Qsc ≈ 72 mW cm-2. Further, in vitro biodegradation of CSF film is performed through trypsin and lysozyme. The results show that trypsin and lysozyme have stable and favorable biodegradation properties, removing 63.1% of CSF film after degrading for 11 days. Further, the CSF-TENG-based human-machine interface (HMI) is designed to promptly track writing steps and access the accuracy of letters, resulting in a straightforward communication media of human and machine. The CSF-TENG-based HMI can automatically recognize and correct three representative letters (F, H, and K), which is benefited by HMI system for data processing and analysis. The CSF-TENG-based HMI can make decisions for the next stroke, highlighting the stroke in advance by replacing it with red, which can be a candidate for calligraphy practice and correction. Finally, various demonstrations are done in real-time to achieve virtual and real-world controls including writing, vehicle movements, and healthcare.
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Affiliation(s)
- Shen Shen
- Jiangsu Engineering Technology Research Center for Functional Textiles, Jiangnan University, No.1800 Lihu Avenue, Wuxi, P. R. China
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117576, Singapore
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P.R. China
- China National Textile and Apparel Council Key Laboratory of Natural Dyes, Soochow University, Suzhou, 215123, People's Republic of China
| | - Jia Yi
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P.R. China
| | - Zhongda Sun
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117576, Singapore
| | - Zihao Guo
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117576, Singapore
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P.R. China
| | - Tianyiyi He
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117576, Singapore
| | - Liyun Ma
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P.R. China
| | - Huimin Li
- Jiangsu Engineering Technology Research Center for Functional Textiles, Jiangnan University, No.1800 Lihu Avenue, Wuxi, P. R. China
- China National Textile and Apparel Council Key Laboratory of Natural Dyes, Soochow University, Suzhou, 215123, People's Republic of China
| | - Jiajia Fu
- Jiangsu Engineering Technology Research Center for Functional Textiles, Jiangnan University, No.1800 Lihu Avenue, Wuxi, P. R. China.
- China National Textile and Apparel Council Key Laboratory of Natural Dyes, Soochow University, Suzhou, 215123, People's Republic of China.
| | - Chengkuo Lee
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117576, Singapore.
| | - Zhong Lin Wang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P.R. China.
- School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA.
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