Optical Constants of Individual Films in Multilayers

F Demichelis; G Kaniadakis; E Mezzetti; A Tagliaferro; E Tresso; P Rava

doi:10.1117/12.938375

13 October 1986 Optical Constants of Individual Films in Multilayers

F Demichelis, G Kaniadakis, E Mezzetti, A Tagliaferro, E Tresso, P Rava

Proceedings Volume 0652, Thin Film Technologies II; (1986) https://doi.org/10.1117/12.938375
Event: 1986 International Symposium/Innsbruck, 1986, Innsbruck, Austria

Abstract

An accurate technique for determining the optical constants of thin absorbing films as components in an amorphous semiconductor multilayer is presented. The case of films of Indium Tin Oxide (ITO) covered with a film of hydrogenated amorphous silicon has been investigated since it is of relevance in the solar cell field. Transmittance T, reflectance R and reverse reflectance R' were measured for the single films ( a-Si:H and ITO) on the substrate (quartz) and for the bilayer a-Si:H/ITO; from these measurements the indices of refraction (n) and extinction coefficients (k) were obtained. Depending on deposition temperature, the optical constants of a single a-Si:H film are remarkably different from those of the same film when it is part of a bilayer structure, especially in the short wavelength region. Also the value of the energy gap in the bilayer case is smaller than in the monolayer case.

Citation Download Citation

F Demichelis, G Kaniadakis, E Mezzetti, A Tagliaferro, E Tresso, and P Rava "Optical Constants of Individual Films in Multilayers", Proc. SPIE 0652, Thin Film Technologies II, (13 October 1986); https://doi.org/10.1117/12.938375

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