Plasmonic Effects on Bulk Heterojunction Polymer Solar Cells: A Transient Photovoltage and Differential Charging Study
Transient photovoltage and differential charging experiments have been carried out to investigate the plasmonic effects in organic photovoltaic devices (OPVs). We observed that the carrier lifetimes became longer after the Au nanoparticles were blended into the OPVs. Additionally, the
charge carrier densities also became higher in the bulk of the device. The carrier lifetime, however, usually follows an inverse power relationship with the increasing charge density in OPVs fabricated base on the concept of bulk heterojunctions. Therefore, we conclude that one of the limitations
for the plasmonic approaches could be the strong bimolecular recombination.
Keywords: NANOPARTICLE; PHOTOVOLTAIC; PLASMONIC; POLYMER; TRANSIENT
Document Type: Short Communication
Publication date: August 1, 2017
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