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An effective method for obtaining large amounts of metal nanoparticles (NPs) encapsulated by carbon layers through upcycling from floating-catalyst aerosol chemical vapor-deposited carbon nanotubes is demonstrated. NPs with diameters of less than 20 μm are selectively extracted from the synthesized carbon assortments through sonication, centrifugation, and filtration. The particles show an aggregation behavior owing to the π–π interaction between the graphitic carbon shells surrounding the iron carbides. By controlling the degree of the aggregation and arrangement, the light scattering by the gap-surface plasmon effect in perovskite solar cells is maximized. Application of the NPs to the devices increased the power conversion efficiency from 19.71% to 21.15%. The short-circuit current density (JSC) trend over the particle aggregation time accounts for the plasmonic effect. The devices show high stability analogue to the control devices, confirming that no metal-ion migration took place thanks to the encapsulation. (Figure presented.).
|Journal||EcoMat: functional materials for green energy and environment|
|Early online date||2023|
|Publication status||Published - Jun 2023|
|MoE publication type||A1 Journal article-refereed|
- carbon encapsulation
- carbon nanoparticles
- carbon nanotubes
- iron nanoparticles
- perovskite solar cells
- plasmonic effect
FingerprintDive into the research topics of 'Upcycled synthesis and extraction of carbon-encapsulated iron carbide nanoparticles for gap Plasmon applications in perovskite solar cells'. Together they form a unique fingerprint.
- 1 Finished
01/09/2019 → 30/09/2021
Project: Academy of Finland: Other research funding