Interface between C60 and Ag on nanostructured plasmonic Ag gratings: A sers study

Akram A. Khosroabadi; Dallas L. Matz; Palash Gangopadhyay; Jeanne E. Pemberton; Robert A. Norwood

doi:10.1117/12.2024333

Interface between C₆₀ and Ag on nanostructured plasmonic Ag gratings: A sers study

Akram A. Khosroabadi, Dallas L. Matz, Palash Gangopadhyay, Jeanne E. Pemberton, Robert A. Norwood

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Nanostructured electrodes and interfaces can enhance light absorption in organic solar cells due to efficient light harvesting. Ultrathin films of an active layer (C₆₀) deposited on nanostructured grating electrodes show more absorption as a result of increased light trapping. Plasmonic nanostructured electrodes with various geometries and dimensions have been fabricated on printed polyacrylonitrile (PAN) and subsequently characterized. Surface enhanced Raman scattering (SERS) measurements show significant signal enhancement (over two orders of magnitude) on nanostructured samples when compared to planar Ag substrates due to local electromagnetic field enhancement. Furthermore, conversion of PAN to graphitic carbon is evidenced in SERS spectra. The surface area was determined using underpotential deposition (UPD) of thallium and agrees with the geometric surface area calculated from SEM images. The FDTD simulated electric field distribution inside the samples confirms the experimental results. A 60 fold increase in the electric field results in three to four orders of magnitude enhancement in the SERS signal depending on the dimensions of the pillars and gratings. Further study of the interaction between a top organic layer (C₆₀) and the Ag electrode will help us to understand the nanoscale charge transfer rate critical to optimization and design of efficient organic solar cells.

Original language	English (US)
Title of host publication	Plasmonics
Subtitle of host publication	Metallic Nanostructures and Their Optical Properties XI
Publisher	SPIE
ISBN (Print)	9780819496591
DOIs	https://doi.org/10.1117/12.2024333
State	Published - 2013
Event	Plasmonics: Metallic Nanostructures and Their Optical Properties XI - San Diego, CA, United States Duration: Aug 25 2013 → Aug 29 2013

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	8809

Other

Other	Plasmonics: Metallic Nanostructures and Their Optical Properties XI
Country/Territory	United States
City	San Diego, CA
Period	8/25/13 → 8/29/13

Keywords

Ag nanostructures
SERS
metal/organic interface

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2024333

Cite this

Khosroabadi, A. A., Matz, D. L., Gangopadhyay, P., Pemberton, J. E., & Norwood, R. A. (2013). Interface between C₆₀ and Ag on nanostructured plasmonic Ag gratings: A sers study. In Plasmonics: Metallic Nanostructures and Their Optical Properties XI Article 88091L (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8809). SPIE. https://doi.org/10.1117/12.2024333

Interface between C₆₀ and Ag on nanostructured plasmonic Ag gratings: A sers study. / Khosroabadi, Akram A.; Matz, Dallas L.; Gangopadhyay, Palash et al.
Plasmonics: Metallic Nanostructures and Their Optical Properties XI. SPIE, 2013. 88091L (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8809).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Khosroabadi, AA, Matz, DL, Gangopadhyay, P, Pemberton, JE & Norwood, RA 2013, Interface between C₆₀ and Ag on nanostructured plasmonic Ag gratings: A sers study. in Plasmonics: Metallic Nanostructures and Their Optical Properties XI., 88091L, Proceedings of SPIE - The International Society for Optical Engineering, vol. 8809, SPIE, Plasmonics: Metallic Nanostructures and Their Optical Properties XI, San Diego, CA, United States, 8/25/13. https://doi.org/10.1117/12.2024333

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