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Zhu C, Liu H, Wang W, Xiang L, Jiang J, Shuai Q, Yang X, Zhang T, Zheng B, Wang H, Li D, Pan A. Optical synaptic devices with ultra-low power consumption for neuromorphic computing. LIGHT, SCIENCE & APPLICATIONS 2022; 11:337. [PMID: 36443284 PMCID: PMC9705294 DOI: 10.1038/s41377-022-01031-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 10/31/2022] [Accepted: 11/01/2022] [Indexed: 05/31/2023]
Abstract
Brain-inspired neuromorphic computing, featured by parallel computing, is considered as one of the most energy-efficient and time-saving architectures for massive data computing. However, photonic synapse, one of the key components, is still suffering high power consumption, potentially limiting its applications in artificial neural system. In this study, we present a BP/CdS heterostructure-based artificial photonic synapse with ultra-low power consumption. The device shows remarkable negative light response with maximum responsivity up to 4.1 × 108 A W-1 at VD = 0.5 V and light power intensity of 0.16 μW cm-2 (1.78 × 108 A W-1 on average), which further enables artificial synaptic applications with average power consumption as low as 4.78 fJ for each training process, representing the lowest among the reported results. Finally, a fully-connected optoelectronic neural network (FONN) is simulated with maximum image recognition accuracy up to 94.1%. This study provides new concept towards the designing of energy-efficient artificial photonic synapse and shows great potential in high-performance neuromorphic vision systems.
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Affiliation(s)
- Chenguang Zhu
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, 410082, Changsha, China
- Hunan Institute of Optoelectronic Integration, Hunan University, 410082, Changsha, China
| | - Huawei Liu
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, 410082, Changsha, China
- Hunan Institute of Optoelectronic Integration, Hunan University, 410082, Changsha, China
| | - Wenqiang Wang
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, 410082, Changsha, China
- Hunan Institute of Optoelectronic Integration, Hunan University, 410082, Changsha, China
| | - Li Xiang
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, 410082, Changsha, China.
- Hunan Institute of Optoelectronic Integration, Hunan University, 410082, Changsha, China.
| | - Jie Jiang
- School of Physics and Electronics, Central South University, 410083, Changsha, China
| | - Qin Shuai
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, 410082, Changsha, China
- Hunan Institute of Optoelectronic Integration, Hunan University, 410082, Changsha, China
| | - Xin Yang
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, 410082, Changsha, China
- Hunan Institute of Optoelectronic Integration, Hunan University, 410082, Changsha, China
| | - Tian Zhang
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, 410082, Changsha, China
- Hunan Institute of Optoelectronic Integration, Hunan University, 410082, Changsha, China
| | - Biyuan Zheng
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, 410082, Changsha, China
- Hunan Institute of Optoelectronic Integration, Hunan University, 410082, Changsha, China
| | - Hui Wang
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, 410082, Changsha, China
- Hunan Institute of Optoelectronic Integration, Hunan University, 410082, Changsha, China
| | - Dong Li
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, 410082, Changsha, China.
- Hunan Institute of Optoelectronic Integration, Hunan University, 410082, Changsha, China.
| | - Anlian Pan
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, 410082, Changsha, China.
- Hunan Institute of Optoelectronic Integration, Hunan University, 410082, Changsha, China.
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Liu H, Zhu X, Sun X, Zhu C, Huang W, Zhang X, Zheng B, Zou Z, Luo Z, Wang X, Li D, Pan A. Self-Powered Broad-band Photodetectors Based on Vertically Stacked WSe 2/Bi 2Te 3 p-n Heterojunctions. ACS NANO 2019; 13:13573-13580. [PMID: 31697469 DOI: 10.1021/acsnano.9b07563] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Semiconducting p-n heterojunctions, serving as the basic unit of modern electronic devices, such as photodetectors, solar-energy conversion devices, and light-emitting diodes (LEDs), have been extensively investigated in recent years. In this work, high performance self-powered broad-band photodetectors were fabricated based on vertically stacked p-n heterojunctions though combining p-type WSe2 with n-type Bi2Te3 via van der Waals (vdW) epitaxial growth. Devices based on the p-n heterojunction show obvious current rectification behaviors in the dark and superior photovoltaic characteristics under light irradiation. A maximum short circuit current of 18 nA and open circuit voltage of 0.25 V can be achieved with the illumination light of 633 nm (power density: 26.4 mW/cm2), which are among the highest values compared with the ever reported 2D vdW heterojunctions synthesized by chemical vapor deposition (CVD) method. Benefiting from the broad-band absorption of the heterostructures, the detection range can be expanded from the visible to near-infrared (375-1550 nm). Moreover, ascribing to the efficient carriers separation process at the junction interfaces, the devices can be further employed as self-powered photodetectors, where a fast response time (∼210 μs) and high responsivity (20.5 A/W at 633 nm and 27 mA/W at 1550 nm) are obtained under zero bias voltage. The WSe2/Bi2Te3 p-n heterojunction-based self-powered photodetectors with high photoresponsivity, fast photoresponse time, and broad spectral response will find potential applications in high speed and self-sufficient broad-band devices.
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Affiliation(s)
- Huawei Liu
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Xiaoli Zhu
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Xingxia Sun
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
| | - Chenguang Zhu
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
| | - Wei Huang
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Xuehong Zhang
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Biyuan Zheng
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Zixing Zou
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Ziyu Luo
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
| | - Xiao Wang
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Dong Li
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
| | - Anlian Pan
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
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