Mechanism of plasmon enhancement of PV efficiency for metallic nano-modified surface of semiconductor photo-cell

W. Jacak; J. Krasnyj; J. Jacak

doi:10.1117/12.860771

10 September 2010 Mechanism of plasmon enhancement of PV efficiency for metallic nano-modified surface of semiconductor photo-cell

W. Jacak, J. Krasnyj, J. Jacak

Author Affiliations +

Proceedings Volume 7757, Plasmonics: Metallic Nanostructures and Their Optical Properties VIII; 775734 (2010) https://doi.org/10.1117/12.860771
Event: SPIE NanoScience + Engineering, 2010, San Diego, California, United States

Abstract

Metallic nanospheres (Au, Ag, Cu) deposited on PV-active semiconductor surface can act as light converters, collecting energy of incident photons in plasmon oscillations. This energy can be next transferred to semiconductor substrate via a near-field channel, in a more efficient manner in comparison to the direct photo-effect. We explain this enhancement by inclusion of all indirect inter-band transitions in semiconductor layer due to near-field coupling with plasmon radiation in nanoscale of the metallic components, where the momentum is not conserved as the system is not translationally invariant. The model of nano-sphere plasmon is formulated (RPA, analytical version, adjusted to description of large metallic clusters, with radius of 10-100 nm) including surface and volume modes. Damping of plasmons is analyzed including Lorentz friction, and irradiation losses in far- and near-field regimes. Resulting resonance shifts are verified experimentally for Au and Ag (10-80 nm) colloidal water solutions with respect to particle size. Probability of interband transition (within the Fermi golden rule) caused by coupling to plasmons in near-field regime turns out to be 4-order larger than for coupling of electrons to planar-wave photons. Inclusion of proximity effects (for type of deposition of nano-components and their shape) allows for explanation of photo-current growth experimentally measured. We describe also a non-dissipative collective mode of surface plasmons in a chain of near-field-coupled metallic nanospheres, for particular size/separation parameters and wave-lengths.

Citation Download Citation

W. Jacak, J. Krasnyj, and J. Jacak "Mechanism of plasmon enhancement of PV efficiency for metallic nano-modified surface of semiconductor photo-cell", Proc. SPIE 7757, Plasmonics: Metallic Nanostructures and Their Optical Properties VIII, 775734 (10 September 2010); https://doi.org/10.1117/12.860771

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
15 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Plasmons

Semiconductors

Surface plasmons

Electrons

Optical spheres

Near field

Photons

Show All Keywords

Keywords/Phrases

Search In:

Publication Years