Field-dependent mobility evaluation from steady-state space-charge-limited I-V curves

Dario Natali; Marco Sampietro

doi:10.1117/12.457479

27 February 2002 Field-dependent mobility evaluation from steady-state space-charge-limited I-V curves

Dario Natali, Marco Sampietro

Proceedings Volume 4464, Organic Light-Emitting Materials and Devices V; (2002) https://doi.org/10.1117/12.457479
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

In the framework of trap-free steady-state space-charge-limited single-carrier currents, exact equations are derived for the evaluation of arbitrary field-dependent mobility. A differential method, which simply needs first and second derivatives of measured current-voltage (I-V) curves, is put forward. No a priori assumptions are required, other than those which are typical for space-charge-limited currents. An extension to the mixed case of exponentially distributed traps and field-dependent mobility is briefly outlined. The extraction of mobility from measurements can be a valuable tool for the theoretician: theoretical predictions on mobility field-dependence can be easily compared to the real field-dependence, thus permitting an improvement of the model and stimulating the development of transport theory. This method can be of particular relevance for organic semiconductors, whose field-dependent mobility has recently attracted so much theoretical and experimental work.

Citation Download Citation

Dario Natali and Marco Sampietro "Field-dependent mobility evaluation from steady-state space-charge-limited I-V curves", Proc. SPIE 4464, Organic Light-Emitting Materials and Devices V, (27 February 2002); https://doi.org/10.1117/12.457479

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