Abstract
Effect of Injected Charges in Polydimethylsiloxane Films on Triboelectric Power Generation
Highlights
IntroductionTriboelectric devices, which can generate electric power by contact and/or friction between different objects,(1–6) are attracting attention as a power source for wearable devices and small sensors[7] because of their simple structure and compact size.[8,9] the output power of triboelectric devices is lower than that of other power generation devices.[10] Researchers are eager to improve the output power by optimizing the combination of materials, increasing the effective surface area, and modifying the surface.[11,12,13] For example, a previously reported triboelectric device composed of stacked layers of polyethylene terephthalate (PET) and polyimide was simple and inexpensive, it showed a low output voltage of 3.3 V (maximum power density of 0.367 μW/cm2).(11) A device composed of a combination of a pyramid-patterned polydimethylsiloxane (PDMS) film and a transparent conductive oxide/PET film was reported to improve output power
Triboelectric devices, which can generate electric power by contact and/or friction between different objects,(1–6) are attracting attention as a power source for wearable devices and small sensors[7] because of their simple structure and compact size.[8,9] the output power of triboelectric devices is lower than that of other power generation devices.[10]. Researchers are eager to improve the output power by optimizing the combination of materials, increasing the effective surface area, and modifying the surface.[11,12,13] For example, a previously reported triboelectric device composed of stacked layers of polyethylene terephthalate (PET) and polyimide was simple and inexpensive, it showed a low output voltage of 3.3 V.(11) A device composed of a combination of a pyramid-patterned polydimethylsiloxane (PDMS) film and a transparent conductive oxide/PET film was reported to improve output power. It achieved an output voltage of 18 V, a current of 0.7 μA, and a power density of 2.34 μW/cm2.(12) Another device composed of a patterned PDMS film and an Al plate in the shape of an arch provided a high output voltage of 230 V, a high output current of 0.13 mA, and a power density of 3.56 mW/cm2.(13) these patterned polymer and arch devices provided high output power, they are expected to have a high processing cost
The output voltage of a triboelectric generator composed of a PDMS film and an Al plate was increased by forming a fixed charge on the PDMS
Summary
Triboelectric devices, which can generate electric power by contact and/or friction between different objects,(1–6) are attracting attention as a power source for wearable devices and small sensors[7] because of their simple structure and compact size.[8,9] the output power of triboelectric devices is lower than that of other power generation devices.[10] Researchers are eager to improve the output power by optimizing the combination of materials, increasing the effective surface area, and modifying the surface.[11,12,13] For example, a previously reported triboelectric device composed of stacked layers of polyethylene terephthalate (PET) and polyimide was simple and inexpensive, it showed a low output voltage of 3.3 V (maximum power density of 0.367 μW/cm2).(11) A device composed of a combination of a pyramid-patterned polydimethylsiloxane (PDMS) film and a transparent conductive oxide/PET film was reported to improve output power. We used a polymer film with a fixed charge formed beforehand and obtained the relationship between the power generation characteristics and the parameters involved in the formation of the fixed charge in the film
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