Method for fabricating a high efficiency bio-photovoltaic cells by using plasmonic silver nanoparticles and natural extracted graminoids

摘要

Disclosed is a technique for fabricating a bio-photovoltaic cell which includes coupling graminoids extracted from natural grasses to a semiconductor electron acceptor, on which plasmonic silver nanoparticles are aligned, by using an organic ligand material. More particularly, disclosed is a technique for fabricating a new renewable energy generation device useable for fabrication of high efficiency bio-photovoltaic cells by improving a photo-electron generation rate of graminoids through a surface plasmon effect of silver nanoparticles and increasing an effective photo-electron amount transferred to the electron acceptor due to optimized bonding between a photo sensitizer and an electron acceptor.

主权项

1. A method for fabricating a high efficiency bio-photovoltaic cell using plasmonic metal nanoparticles and naturally extracted graminoids, comprising:
a first process of extracting one of graminoids or chlorophylls from natural grasses; then, a second process of preparing metal nanoparticles selected from silver, gold, platinum or palladium, and a sheet type titanium dioxide electron acceptor, wherein the metal nanoparticles provide a surface plasmon effect; then, a third process of laminating the sheet type titanium dioxide electron acceptor, the silver nanoparticles and a naturally extracted photo sensitizer on a transparent electrode to prepare a photo-electrode; and then, a fourth process of preparing a platinum coated counter-electrode having platinum and injecting an electrolyte between the photo-electrode and the counter-electrode to complete a photovoltaic cell, wherein the inserted metal nanoparticles are coupled to a bio-photo sensitizer through an organic ligand material while exhibiting surface plasmon effect.