Fabrication of multi-layered polymer LEDs by resonant infrared pulsed-laser deposition

S. L. Johnson; H. K. Park; R. F. Haglund Jr.

doi:10.1117/12.734620

14 November 2007 Fabrication of multi-layered polymer LEDs by resonant infrared pulsed-laser deposition

S. L. Johnson, H. K. Park, R. F. Haglund Jr.

Proceedings Volume 6655, Organic Light Emitting Materials and Devices XI; 66550M (2007) https://doi.org/10.1117/12.734620
Event: Photonic Devices + Applications, 2007, San Diego, California, United States

Abstract

Multi-layered polymer light-emitting diodes (PLEDs) have been fabricated in a vacuum environment by resonant infrared pulsed-laser deposition of the polymer layers. The light emitter used was poly[2-methoxy-5-(2- ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV), and in some cases a layer of the hole-transport polymer poly(3,4 etylenedioxythiophene:polystyrenesulfonate) (PEDOT:PSS) was also laser deposited, resulting in a device structure of ITO/PEDOT:PSS/MEH-PPV/Al. Fourier transform infrared (FTIR) spectroscopy confirmed that neither of the laser-deposited polymers was significantly altered by the deposition process. Laser-fabricated devices displayed electroluminescent spectra similar to those of conventional spin-coated devices, but the differences in electrical characteristics and device efficiency were substantial. These discrepancies can probably be attributed to surface roughness of the deposited polymer layers. With the appropriate refinement of the deposition protocols, however, we believe that this process can be improved to a level that is suitable for routine fabrication of organic electronic components.

Citation Download Citation

S. L. Johnson, H. K. Park, and R. F. Haglund Jr. "Fabrication of multi-layered polymer LEDs by resonant infrared pulsed-laser deposition", Proc. SPIE 6655, Organic Light Emitting Materials and Devices XI, 66550M (14 November 2007); https://doi.org/10.1117/12.734620

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