Morphology and optical properties of discontinuous gold films on semiconductor surfaces

Tetyana R. Barlas; Nikolas L. Dmitruk; Volodymyr R. Romaniuk

doi:10.1117/12.486675

11 December 2002 Morphology and optical properties of discontinuous gold films on semiconductor surface

Tetyana R. Barlas, Nikolas L. Dmitruk, Volodymyr R. Romaniuk

Proceedings Volume 4938, Selected Papers from the International Conference on Spectroscopy of Molecules and Crystals; (2002) https://doi.org/10.1117/12.486675
Event: XV International School on Spectroscopy of Molecules and Crystals, 2001, Chernivsti, Ukraine

Abstract

This paper is devoted to investigations of discontinuous metal films on semicondcutor surface by transmission electron microscopy (TEM) and atomic force microscopy (AFM). Technology of local electrochemical deposition of noble metal nanoparticles on semiconductor substrate is elaborated. It allows to obtain as well isolated Au particles with the 2-50 nm diameter as some chain structures perhaps of fractal type. According to the TEM and AFM data the gold clusters have the form of a truncated spheres surrounded by uncovered microrelief areas of semiconductor. Comparison of these two methods allows to study the morphology of metal coating, and the shape of metal islands, and their sizes. The microrelief of substrate surface, inevitable at used technology of the gold preparation, has been identified. In order to study the effect of both gold island and surface roughness on the optical properties of structures, we performed the reflectance spectra of polarized light measurements at several angles of incidence. Optical reflectance spectra are interpreted by the modified Maxwell-Garnett theory taking into account the pair multipole interaction between the nanoparticles or by the symmetrical Bruggeman's approximation.

Citation Download Citation

Tetyana R. Barlas, Nikolas L. Dmitruk, and Volodymyr R. Romaniuk "Morphology and optical properties of discontinuous gold films on semiconductor surface", Proc. SPIE 4938, Selected Papers from the International Conference on Spectroscopy of Molecules and Crystals, (11 December 2002); https://doi.org/10.1117/12.486675

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