Anisotropy in structural and optical properties of chemical vapor deposited ZnS

John McCloy; Eric Fest; Ralph Korenstein; W. Howard Poisl

doi:10.1117/12.886138

20 May 2011 Anisotropy in structural and optical properties of chemical vapor deposited ZnS

John McCloy, Eric Fest, Ralph Korenstein, W. Howard Poisl

Proceedings Volume 8016, Window and Dome Technologies and Materials XII; 80160I (2011) https://doi.org/10.1117/12.886138
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

Significant anisotropy in as-deposited CVD ZnS at several length scales has been demonstrated through investigation of structural and optical properties. Compressive strength of cylinders of CVD ZnS oriented in the growth direction is ~50% higher than cylinders taken perpendicular to the growth direction. Lattice parameter measurements of mandrel side (first-to-grow) material is ~0.4% smaller than growth side (last-to-grow) material in a cored sample representing ~500 hours of CVD growth, indicating significant strain along the growth direction. X-ray diffraction also shows evidence of preferred orientations for hexagonality which differ depending on position in the growth history. In crosssection, the cored sample shows several large bands which are correlated with different degrees of infrared absorption and BTDF scattering. However, no universal trend is found that applies to the whole length from the mandrel to the growth side regarding optical properties. The extinction in the visible and infrared is lower for measurements perpendicular to the growth axis than parallel to it, possibly due to scattering from the growth bands.

Citation Download Citation

John McCloy, Eric Fest, Ralph Korenstein, and W. Howard Poisl "Anisotropy in structural and optical properties of chemical vapor deposited ZnS", Proc. SPIE 8016, Window and Dome Technologies and Materials XII, 80160I (20 May 2011); https://doi.org/10.1117/12.886138

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