Photoconductive measurements on P-type 6H-SiC

Stephen E. Saddow; Pak Shing Cho; Julius Goldhar; John Palmour; Chi Hsiang Lee

doi:10.1117/12.146557

9 June 1993 Photoconductive measurements on P-type 6H-SiC

Stephen E. Saddow, Pak Shing Cho, Julius Goldhar, John Palmour, Chi Hsiang Lee

Proceedings Volume 1873, Optically Activated Switching III; (1993) https://doi.org/10.1117/12.146557
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

The optoelectronic properties of 6-H silicon carbide (6H-SiC) were investigated using lateral and vertical photoconductive switches. We report the measurement of photovoltaic and photoconductive effects for both geometries and at several wavelengths near the 6H-SiC absorption edge. The carrier lifetime in p-type 6H-SiC is also reported. Although the devices possess dark resistances on the order of 10 (Omega) , the switching efficiency of the vertical switches approached 32 percent, while the resistance of the lateral devices could be reduced by 50 percent with 200 (mu) J of laser radiation at (lambda) equals 337 nm. In addition, we measured photoconductivity in the vertical switches with a device static powers dissipation exceeding 11 Watts. Although the device was glowing from the high level of dc power being dissipated, only the switch mount was damaged. 6H-SiC is indeed a high-temperature optoelectronic material.

Citation Download Citation

Stephen E. Saddow, Pak Shing Cho, Julius Goldhar, John Palmour, and Chi Hsiang Lee "Photoconductive measurements on P-type 6H-SiC", Proc. SPIE 1873, Optically Activated Switching III, (9 June 1993); https://doi.org/10.1117/12.146557

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