Development and characterization of novel optoelectronic devices based on composite nanomaterials
Authors
Shao, Dali
ORCID
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Other Contributors
Sawyer, Shayla Maya Louise
Shur, Michael
Bhat, Ishwara B.
Lian, Jie
Shur, Michael
Bhat, Ishwara B.
Lian, Jie
Issue Date
2013-12
Keywords
Electrical engineering
Degree
PhD
Terms of Use
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
Full Citation
Abstract
As for the SPR effects, three different material systems were investigated for potential LED and solar cell applications: PVA-ZnO/MWCNTs/PVA-ZnO, SiO2-Au core-shell/PVA-ZnO, and pure Au nanoparticles embedded organic polymer solar cells. The PVA-ZnO/MWCNTs/PVA-ZnO composite structures showed greatly enhanced band edge emission (>300%) that originates from SPR between ZnO and MWCNTs. As for the SiO2-Au core-shell structures, the SPR peaks can be tuned in a wide range (554 nm - 631 nm) by adjusting the size and the shape of Au nanoparticles attached to the SiO2 surface. The core-shell structures provide an effective approach for simultaneously suppressing defect level emission and enhancing near band edge emissions of the ZnO nanoparticles by defect-induced surface plasmon resonance. The superior SPR tunability of the core-shell structure, together with the low cost and flexibility of the approach, makes it a nanomaterial of high potential for future optoelectronics. Finally, SPR effect of pure Au NPs for inverted solar cell application was demonstrated. After embedded with a thin layer of Au NPs, a maximum efficiency improvement of 14.29% was achieved.
Description
December 2013
School of Engineering
School of Engineering
Department
Dept. of Electrical, Computer, and Systems Engineering
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
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