A transparent polymer based solar cell was designed and fabricated to utilize the solar energy when exposed to sunlight. The transparent solar cell for window module was composed of a polymeric material PPV (Polypheny...A transparent polymer based solar cell was designed and fabricated to utilize the solar energy when exposed to sunlight. The transparent solar cell for window module was composed of a polymeric material PPV (Polyphenylene vinylene), ITO (Indium Tin Oxide) and electrode (Al, Mg, Ca). The polymeric sheet of this cell is by casting process, and electrode is applied on it by CVD (Chemical Vapor Deposition) process. The solar energy collected by this window can be used to power up small household electrical appliances. Recently, polymeric solar cell is made by a roll-to-roll process without using indium-tin oxide (ITO). A commercially available kapton (Polyimide) foil with an over layer of copper was used as the substrate. Sputtering of titanium metal on to the kapton/copper in a vacuum metalizing process gave the monolithic substrate and back electrode for the devices. The active layer was slot-die coated on to the kapton/Cu/Ti foil followed by slot-die coating of a layer of PET, PC or PEN.展开更多
Recent development of self-healing material has attracted tremendous attention,owing to its biomimetic ability to restore structure and functionality when encountering damages.Here,we develop a threedimensional(3D)pri...Recent development of self-healing material has attracted tremendous attention,owing to its biomimetic ability to restore structure and functionality when encountering damages.Here,we develop a threedimensional(3D)printable self-healing composite conductive polymer by mixing hydrogen-bond-based supramolecular polymer with low-cost carbon black.It has a room-temperature self-healing capability in both conductivity and mechanical property,while its shear-thinning behavior enables fabrication of a self-healable circuit by 3D printing technology.As an application,the circuit shows an excellent temperature-dependent behavior of the resistance,indicating its great potential fo r practical application in the artificial intelligence field.展开更多
Conducting polymer hydrogel can address the challenges of stricken biocompatibility and durability.Nevertheless,conventional conducting polymer hydrogels are often brittle and weak due to the intrinsic quality of the ...Conducting polymer hydrogel can address the challenges of stricken biocompatibility and durability.Nevertheless,conventional conducting polymer hydrogels are often brittle and weak due to the intrinsic quality of the material,which exhibits viscoelasticity.This property may cause a delay in sensor response time due to hysteresis.To overcome these limitations,we have designed a wrinkle morphology three-dimensional(3D)substrate using digital light processing technology and then followed by in situ polymerization to form interpenetrating polymer network hydrogels.This novel design results in a wrinkle morphology conducting polymer hydrogel elastomer with high precision and geometric freedom,as the size of the wrinkles can be controlled by adjusting the treating time.The wrinkle morphology on the conducting polymer hydrogel effectively reduces its viscoelasticity,leading to samples with quick response time,low hysteresis,stable cyclic performance,and remarkable resistance change.Simultaneously,the 3D gradient structure augmented the sensor's sensitivity under minimal stress while exhibiting consistent sensing performance.These properties indicate the potential of the conducting polymer hydrogel as a flexible sensor.展开更多
The paper describes the fabrication of polypyrrole (PPy) microstructures through patterned self-assembled film guided electrodeposition. Thus the patterned self-assembled monolayer is prepared by microcontact printin...The paper describes the fabrication of polypyrrole (PPy) microstructures through patterned self-assembled film guided electrodeposition. Thus the patterned self-assembled monolayer is prepared by microcontact printing (μCP) and used as the template in the electrodeposition of PPy. It has been found that the self-assembled monolayer plays completely different roles on different substrates in directing the deposition of the PPy. Namely, the electrodeposition mainly occurs on the exposed area of the gold substrates patterned with dodecanethiol (DDT) and octadecanelthiol (ODT) and on the indium tin oxide (ITO) substrate patterned with octadecyltrichlorosilane (OTS), while PPy nucleates on the OTS covered area and no deposition is found on the exposed area of a semiconductor substrate (silicon). This is attributed to the co-operative effect between the substrate conductivity and the compatibility of the PPy oligomerwith the covered or exposed area of the substrate surface.展开更多
文摘A transparent polymer based solar cell was designed and fabricated to utilize the solar energy when exposed to sunlight. The transparent solar cell for window module was composed of a polymeric material PPV (Polyphenylene vinylene), ITO (Indium Tin Oxide) and electrode (Al, Mg, Ca). The polymeric sheet of this cell is by casting process, and electrode is applied on it by CVD (Chemical Vapor Deposition) process. The solar energy collected by this window can be used to power up small household electrical appliances. Recently, polymeric solar cell is made by a roll-to-roll process without using indium-tin oxide (ITO). A commercially available kapton (Polyimide) foil with an over layer of copper was used as the substrate. Sputtering of titanium metal on to the kapton/copper in a vacuum metalizing process gave the monolithic substrate and back electrode for the devices. The active layer was slot-die coated on to the kapton/Cu/Ti foil followed by slot-die coating of a layer of PET, PC or PEN.
基金supported by National Program for Thousand Young Talents of Chinathe National Natural Science Foundation of China(Nos.51773041,21544001,21603038)+1 种基金Shanghai Committee of Science and Technology in China(No.18ZR1404900)Fudan University。
文摘Recent development of self-healing material has attracted tremendous attention,owing to its biomimetic ability to restore structure and functionality when encountering damages.Here,we develop a threedimensional(3D)printable self-healing composite conductive polymer by mixing hydrogen-bond-based supramolecular polymer with low-cost carbon black.It has a room-temperature self-healing capability in both conductivity and mechanical property,while its shear-thinning behavior enables fabrication of a self-healable circuit by 3D printing technology.As an application,the circuit shows an excellent temperature-dependent behavior of the resistance,indicating its great potential fo r practical application in the artificial intelligence field.
基金Fundamental Research Funds for the Central UniversitiesBasic and Applied Basic Research Foundation of Guangdong Province,Grant/Award Number:2022A1515111227+1 种基金Natural Science Foundation of Shaanxi Province,Grant/Award Number:2023‐JC‐QN‐0598China Postdoctoral Science Foundation,Grant/Award Number:2023T160529。
文摘Conducting polymer hydrogel can address the challenges of stricken biocompatibility and durability.Nevertheless,conventional conducting polymer hydrogels are often brittle and weak due to the intrinsic quality of the material,which exhibits viscoelasticity.This property may cause a delay in sensor response time due to hysteresis.To overcome these limitations,we have designed a wrinkle morphology three-dimensional(3D)substrate using digital light processing technology and then followed by in situ polymerization to form interpenetrating polymer network hydrogels.This novel design results in a wrinkle morphology conducting polymer hydrogel elastomer with high precision and geometric freedom,as the size of the wrinkles can be controlled by adjusting the treating time.The wrinkle morphology on the conducting polymer hydrogel effectively reduces its viscoelasticity,leading to samples with quick response time,low hysteresis,stable cyclic performance,and remarkable resistance change.Simultaneously,the 3D gradient structure augmented the sensor's sensitivity under minimal stress while exhibiting consistent sensing performance.These properties indicate the potential of the conducting polymer hydrogel as a flexible sensor.
基金This work was supported by the National Natural Science Foundation of China(Grant No.50275142)Ministry of Science and Technology(Grant No.2202AA302609)the Program of Hundreds Talent of Chinese Academy of Sciences.
文摘The paper describes the fabrication of polypyrrole (PPy) microstructures through patterned self-assembled film guided electrodeposition. Thus the patterned self-assembled monolayer is prepared by microcontact printing (μCP) and used as the template in the electrodeposition of PPy. It has been found that the self-assembled monolayer plays completely different roles on different substrates in directing the deposition of the PPy. Namely, the electrodeposition mainly occurs on the exposed area of the gold substrates patterned with dodecanethiol (DDT) and octadecanelthiol (ODT) and on the indium tin oxide (ITO) substrate patterned with octadecyltrichlorosilane (OTS), while PPy nucleates on the OTS covered area and no deposition is found on the exposed area of a semiconductor substrate (silicon). This is attributed to the co-operative effect between the substrate conductivity and the compatibility of the PPy oligomerwith the covered or exposed area of the substrate surface.
