Ohmic contact for high-performance organic electronic devices

Liping Ma; Yang Yang

doi:10.1117/12.505108

17 November 2003 Ohmic contact for high-performance organic electronic devices

Liping Ma, Yang Yang

Proceedings Volume 5217, Organic Field Effect Transistors II; (2003) https://doi.org/10.1117/12.505108
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

A high-performance organic diode is demonstrated by using C₆₀ sandwiched between a cathode and an anode using metals with different diffusivity and donor ability. In this manuscript,copper (Cu)and aluminum (Al)are selected as the cathode and anode, respectively. C₆₀ is used as the organic electron-acceptor for its high stability and high carrier mobility. The as-prepared diode shows poor performance.However,after heat treatment, the Cu/C₆₀ interface becomes an Ohmic contact through Cu diffusion and charge-transfer processes,allowing highly efficient electron injection from the Cu electrode. On the other hand, a rectified C₆₀/Al contact is formed, prohibiting efficient electron injection from the Al electrode into C₆₀. Hence,a high-performance organic diode is formed through a heat treatment process, not by the selection of metals with different work functions. Due to the high mobility of C₆₀, the device shows megahertz frequency response, and it can also handle rather high current density (363 A/cm² at 2.4V). This opens the way for the formation of high-performance organic electronic devices.

Citation Download Citation

Liping Ma and Yang Yang "Ohmic contact for high-performance organic electronic devices", Proc. SPIE 5217, Organic Field Effect Transistors II, (17 November 2003); https://doi.org/10.1117/12.505108

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