Suvankar Poddar, Pulok Das, Souvik Bhattacharjee and Kalyan Kumar Chattopadhyay
{"title":"通过阴离子位掺杂打破CuBO2 delafote的反转对称性,改进PVDF压电复合材料及其在纳米发电机和光电神经形态计算中的应用","authors":"Suvankar Poddar, Pulok Das, Souvik Bhattacharjee and Kalyan Kumar Chattopadhyay","doi":"10.1039/D5TA02437D","DOIUrl":null,"url":null,"abstract":"<p >Currently, self-charging photodetectors are paving the way for future investigations into energy-autonomous electronics, which are expected to facilitate highly efficient applications in memory storage, compact portable devices, photonic neuromorphic computing and optoelectronic systems. In the present study, we developed multifunctional, flexible PCSB composites for use in self-powered piezoelectric sensors and photonic neuromorphic computing by utilizing the synergistic effect of strongly light-activated CuBO<small><sub>2−<em>x</em></sub></small>S<small><sub><em>x</em></sub></small> and PVDF (PCSB). The optimized piezoelectric nanogenerator (PNG 3), based on PCSB 3, produced a significant electrical output (<em>V</em><small><sub>OC</sub></small> ∼21.8 V and <em>I</em><small><sub>SC</sub></small> ∼0.42 μA) under a 4 kHz frequency and 6.1 MPa pressure. PNG 3 demonstrated a peak output power of 0.96 μW cm<small><sup>−2</sup></small> when subjected to a resistance of 0.1 GΩ. The optimized devices (PNG 3) effectively harvested energy from various physiological movements, enabling sustainable power generation. Furthermore, the PCSB composite was used to fabricate optoelectronic synaptic device for neuromorphic computing. The excellent photosensitive properties of the CuBO<small><sub>2−<em>x</em></sub></small>S<small><sub><em>x</em></sub></small> material enabled the device to operate at an extremely low voltage and achieve low energy consumption per synaptic event. Owing to the efficient separation and transport of photogenerated carriers, facilitated by the conductive CuBO<small><sub>2−<em>x</em></sub></small>S<small><sub><em>x</em></sub></small> material, the photoelectric performance was dramatically enhanced. Additionally, the proposed synaptic devices can effectively simulate the characteristics of biological synaptic activity, including excitatory postsynaptic current (EPSC), paired-pulse facilitation (PPF), short-/long-term plasticity and “learning experience” behavior, under UV-light excitation. Notably, the synaptic device also functioned as an AND/OR gate, enabling in-memory logic operations.</p>","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":" 34","pages":" 28451-28470"},"PeriodicalIF":9.5000,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Inversion symmetry-broken CuBO2 delafossite through anionic site doping for improved piezoelectric composites with PVDF and its application in nanogenerators and optoelectronic neuromorphic computing†\",\"authors\":\"Suvankar Poddar, Pulok Das, Souvik Bhattacharjee and Kalyan Kumar Chattopadhyay\",\"doi\":\"10.1039/D5TA02437D\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Currently, self-charging photodetectors are paving the way for future investigations into energy-autonomous electronics, which are expected to facilitate highly efficient applications in memory storage, compact portable devices, photonic neuromorphic computing and optoelectronic systems. In the present study, we developed multifunctional, flexible PCSB composites for use in self-powered piezoelectric sensors and photonic neuromorphic computing by utilizing the synergistic effect of strongly light-activated CuBO<small><sub>2−<em>x</em></sub></small>S<small><sub><em>x</em></sub></small> and PVDF (PCSB). The optimized piezoelectric nanogenerator (PNG 3), based on PCSB 3, produced a significant electrical output (<em>V</em><small><sub>OC</sub></small> ∼21.8 V and <em>I</em><small><sub>SC</sub></small> ∼0.42 μA) under a 4 kHz frequency and 6.1 MPa pressure. PNG 3 demonstrated a peak output power of 0.96 μW cm<small><sup>−2</sup></small> when subjected to a resistance of 0.1 GΩ. The optimized devices (PNG 3) effectively harvested energy from various physiological movements, enabling sustainable power generation. Furthermore, the PCSB composite was used to fabricate optoelectronic synaptic device for neuromorphic computing. The excellent photosensitive properties of the CuBO<small><sub>2−<em>x</em></sub></small>S<small><sub><em>x</em></sub></small> material enabled the device to operate at an extremely low voltage and achieve low energy consumption per synaptic event. Owing to the efficient separation and transport of photogenerated carriers, facilitated by the conductive CuBO<small><sub>2−<em>x</em></sub></small>S<small><sub><em>x</em></sub></small> material, the photoelectric performance was dramatically enhanced. Additionally, the proposed synaptic devices can effectively simulate the characteristics of biological synaptic activity, including excitatory postsynaptic current (EPSC), paired-pulse facilitation (PPF), short-/long-term plasticity and “learning experience” behavior, under UV-light excitation. Notably, the synaptic device also functioned as an AND/OR gate, enabling in-memory logic operations.</p>\",\"PeriodicalId\":82,\"journal\":{\"name\":\"Journal of Materials Chemistry A\",\"volume\":\" 34\",\"pages\":\" 28451-28470\"},\"PeriodicalIF\":9.5000,\"publicationDate\":\"2025-07-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Chemistry A\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/ta/d5ta02437d\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry A","FirstCategoryId":"88","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/ta/d5ta02437d","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Inversion symmetry-broken CuBO2 delafossite through anionic site doping for improved piezoelectric composites with PVDF and its application in nanogenerators and optoelectronic neuromorphic computing†
Currently, self-charging photodetectors are paving the way for future investigations into energy-autonomous electronics, which are expected to facilitate highly efficient applications in memory storage, compact portable devices, photonic neuromorphic computing and optoelectronic systems. In the present study, we developed multifunctional, flexible PCSB composites for use in self-powered piezoelectric sensors and photonic neuromorphic computing by utilizing the synergistic effect of strongly light-activated CuBO2−xSx and PVDF (PCSB). The optimized piezoelectric nanogenerator (PNG 3), based on PCSB 3, produced a significant electrical output (VOC ∼21.8 V and ISC ∼0.42 μA) under a 4 kHz frequency and 6.1 MPa pressure. PNG 3 demonstrated a peak output power of 0.96 μW cm−2 when subjected to a resistance of 0.1 GΩ. The optimized devices (PNG 3) effectively harvested energy from various physiological movements, enabling sustainable power generation. Furthermore, the PCSB composite was used to fabricate optoelectronic synaptic device for neuromorphic computing. The excellent photosensitive properties of the CuBO2−xSx material enabled the device to operate at an extremely low voltage and achieve low energy consumption per synaptic event. Owing to the efficient separation and transport of photogenerated carriers, facilitated by the conductive CuBO2−xSx material, the photoelectric performance was dramatically enhanced. Additionally, the proposed synaptic devices can effectively simulate the characteristics of biological synaptic activity, including excitatory postsynaptic current (EPSC), paired-pulse facilitation (PPF), short-/long-term plasticity and “learning experience” behavior, under UV-light excitation. Notably, the synaptic device also functioned as an AND/OR gate, enabling in-memory logic operations.
期刊介绍:
The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.