Recovering cavity effects in corrugated organic light emitting diodes

Liping Zhu

doi:10.1117/12.2595195

2 August 2021 Recovering cavity effects in corrugated organic light emitting diodes

Liping Zhu

Proceedings Volume 11808, Organic and Hybrid Light Emitting Materials and Devices XXV; 1180805 (2021) https://doi.org/10.1117/12.2595195
Event: SPIE Organic Photonics + Electronics, 2021, San Diego, California, United States

Abstract

Cavity effects play an important role in determining the out-coupling efficiency of an OLED. By fabricating OLEDs on corrugated substrates, the waveguide and SPP modes can be extracted by diffraction. However, corrugation does not always lead to an enhancement in out-coupling efficiency due to the reduction of the electrode reflectance and hence the cavity effects. Based on the results of our rigorous couple-wave analysis (RCWA) simulation, we found that the cavity effects can be partially recovered using a low index Teflon layer inserted between the ITO anode and the substrate due to the enhancement of the reflectance of the corrugated electrodes. To verify the simulation results, we fabricated corrugated OLEDs having a low-index Teflon interlayer with an EQE of 36%, which is 29% higher than an optimized planar OLED. By experimentally measuring the OLED air mode dispersion, we confirm the cavity emission of a corrugated OLED is enhanced by the low index layer.

Conference Presentation

Citation Download Citation

Liping Zhu "Recovering cavity effects in corrugated organic light emitting diodes", Proc. SPIE 11808, Organic and Hybrid Light Emitting Materials and Devices XXV, 1180805 (2 August 2021); https://doi.org/10.1117/12.2595195

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