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Yao S, Ma Y, Xu K, Liu X. 3D Porous Graphene Architecture Integrated with Cu 2O for Enhanced Electrochemical Sensing Performance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39140422 DOI: 10.1021/acs.langmuir.4c01966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Construction and functionalization of a 3D graphene architecture are crucial to harness and extend the unique features of graphene and thus essential for its numerous conventional and novel applications. Herein, a 3D honeycomb-patterned porous graphene architecture is constructed through a facile and low-cost self-assembly process and then integrated with Cu2O nanoparticles via a simple electrodeposition procedure. The 3D porous graphene structure is prepared by the breath figure method using a graphene oxide (GO)-based complex in which GO is modified by a surfactant as the casting material. Benefiting from the intercalation of the surfactant between the GO nanosheets and the fabrication of a 3D porous structure, the aggregation inhibition of GO nanosheets and increases in accessible surface area are realized at both nano- and microscales, resulting in good electrochemical performance. Moreover, the deposition of Cu2O nanoparticles can further improve the electrochemical sensing performance of the porous reduced graphene oxide (rGO) structure. Extremely low detection limit (30.72 nM) with a linear range of 0 μM to 30 μM, excellent anti-interference, repeatability, reproducibility, stability, and high accuracy for actual sample testing are shown when the 3D porous Cu2O/rGO film is applied as an electrochemical sensor for DA detection. This work provides not only a superior electrochemical biosensor but also a simple, yet effective and general strategy for the construction and functionalization of a 3D graphene structure.
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Affiliation(s)
- Shun Yao
- School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Yingyi Ma
- School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Kaizheng Xu
- School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Xiaoting Liu
- School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China
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Zou C, Zhao Z, Xu M, Wang X, Liu Q, Chen K, He L, Gao F, Li S. GaN/Gr (2D)/Si (3D) Combined High-Performance Hot Electron Transistors. ACS NANO 2023; 17:8262-8270. [PMID: 37125852 DOI: 10.1021/acsnano.2c12435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
To overcome the problem of minority carrier storage time in bipolar transistors, a hot electron transistor (HET) has been proposed. This device has the advantage of high working speed and some complex logic functions can be completed by using one component. Here, we demonstrate a mixed-dimensional HET composed of GaN/AlN microwires, graphene (Gr), and Si. The electrons between GaN/AlN are injected into graphene by an F-N tunneling mechanism to achieve high speed hot electrons, then cross graphene by ballistic transport, and are collected in a nearly lossless manner through a low-barrier Si. Therefore, the device shows a record DC gain of 16.2, a collection efficiency close to the limit of 99.9% based on the graphene hot electron transistor (GHET), an emitter current density of about 68.7 A/cm2, and a high on/off current ratio reaching ∼107. Meanwhile, the current saturation range is wide, beyond those of most GHETs. It has potential applications as a power amplifier.
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Affiliation(s)
- Can Zou
- Guangdong Engineering Research Center of Optoelectronic Functional Materials and Devices, School of Semiconductor Science and Technology, South China Normal University, Guangzhou 510631, People's Republic of China
| | - Zixuan Zhao
- Guangdong Engineering Research Center of Optoelectronic Functional Materials and Devices, School of Semiconductor Science and Technology, South China Normal University, Guangzhou 510631, People's Republic of China
| | - Mingjun Xu
- Guangdong Engineering Research Center of Optoelectronic Functional Materials and Devices, School of Semiconductor Science and Technology, South China Normal University, Guangzhou 510631, People's Republic of China
| | - Xingfu Wang
- Guangdong Engineering Research Center of Optoelectronic Functional Materials and Devices, School of Semiconductor Science and Technology, South China Normal University, Guangzhou 510631, People's Republic of China
| | - Qing Liu
- Guangdong Engineering Research Center of Optoelectronic Functional Materials and Devices, School of Semiconductor Science and Technology, South China Normal University, Guangzhou 510631, People's Republic of China
| | - Kai Chen
- Guangdong Engineering Research Center of Optoelectronic Functional Materials and Devices, School of Semiconductor Science and Technology, South China Normal University, Guangzhou 510631, People's Republic of China
| | - Longfei He
- Institute of Semiconductors, Guangdong Academy of Sciences, Guangzhou 510650, People's Republic of China
| | - Fangliang Gao
- Guangdong Engineering Research Center of Optoelectronic Functional Materials and Devices, School of Semiconductor Science and Technology, South China Normal University, Guangzhou 510631, People's Republic of China
| | - Shuti Li
- Guangdong Engineering Research Center of Optoelectronic Functional Materials and Devices, School of Semiconductor Science and Technology, South China Normal University, Guangzhou 510631, People's Republic of China
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Liang BW, Li MF, Lin HY, Li KS, Chen JH, Shieh JM, Wu CT, Simbulan KB, Su CY, Kuan CH, Lan YW. Dual-mode frequency multiplier in graphene-base hot electron transistor. NANOSCALE 2023; 15:2586-2594. [PMID: 36691938 DOI: 10.1039/d2nr06285b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Since quantum computers have been gradually introduced in countries around the world, the development of the many related quantum components that can operate independently of temperature has become more important for enabling mature products with low power dissipation and high efficiency. As an alternative to studying cryo-CMOSs (complementary metal-oxide-semiconductors) to achieve this goal, quantum tunneling devices based on 2D materials can be examined instead. In this work, a vertical graphene-based quantum tunneling transistor has been used as a frequency modulator. The transistor can operate via different quantum tunneling mechanisms and generates, by applying the appropriate bias, voltage-resistance curves characteristic of variable nonlinear resistance for both base and emitter voltages. We experimentally demonstrate frequency modulation from input signals over the range of 100 kHz to 10 MHz, enabling a tunable frequency doubler or tripler in just a single transistor. This frequency multiplication with a tunneling mechanism makes the graphene-based tunneling device a promising option for frequency electronics in the emerging field of quantum technologies.
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Affiliation(s)
- Bor-Wei Liang
- Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Min-Fang Li
- Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Hung-Yu Lin
- Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Kai-Shin Li
- Taiwan Semiconductor Research Institute, National Applied Research Laboratories, Hsinchu 30078, Taiwan
| | - Jyun-Hong Chen
- Taiwan Semiconductor Research Institute, National Applied Research Laboratories, Hsinchu 30078, Taiwan
| | - Jia-Min Shieh
- Taiwan Semiconductor Research Institute, National Applied Research Laboratories, Hsinchu 30078, Taiwan
| | - Chien-Ting Wu
- Taiwan Semiconductor Research Institute, National Applied Research Laboratories, Hsinchu 30078, Taiwan
| | - Kristan Bryan Simbulan
- Department of Mathematics and Physics, University of Santo Tomas, Manila 1008, Philippines
| | - Ching-Yuan Su
- Graduate Institute of Energy Engineering, National Central University, No. 300, Jhongda Rd., Jhongli, Taoyuan, 320317, Taiwan
| | - Chieh-Hsiung Kuan
- Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Yann-Wen Lan
- Department of Physics, National Taiwan Normal University, Taipei 11677, Taiwan
- Advanced Materials and Green Energy Research Center, National Taiwan Normal University, Taipei 11677, Taiwan.
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