Space-and-time current spectroscopy of wide-gap semiconductors

Igor Sokolov; Mikhail Bryushinin

doi:10.1117/12.737268

16 October 2007 Space-and-time current spectroscopy of wide-gap semiconductors

Igor Sokolov, Mikhail Bryushinin

Proceedings Volume 6740, Optical Materials in Defence Systems Technology IV; 67400B (2007) https://doi.org/10.1117/12.737268
Event: Optics/Photonics in Security and Defence, 2007, Florence, Italy

Abstract

We report the excitation of the non-steady-state photoelectromotive force (photo-EMF) in high-resistance wide-gap materials: layered boron nitride (BN), GaN nanoparticles in porous glasses, polypyrrole nanostructures in chrysotile asbestos matrix. The non-steady-state photo-EMF appears in semiconductor material illuminated by an oscillating interference pattern. Non-uniform illumination gives rise to the photoconductivity and space charge gratings which periodically shift with respect to each other resulting in an alternating photocurrent. Since the conductivity and space charge take part in current generation a number of photoelectric parameters can be measured: Maxwell relaxation time, lifetime, diffusion length and mobility of carriers, concentration of impurity centers.

Citation Download Citation

Igor Sokolov and Mikhail Bryushinin "Space-and-time current spectroscopy of wide-gap semiconductors", Proc. SPIE 6740, Optical Materials in Defence Systems Technology IV, 67400B (16 October 2007); https://doi.org/10.1117/12.737268

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