Mr. Edgars Suna Profile

Edgars Suna

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 24 May 2022 Poster + Paper

Optical properties of carbazole with pyridinium ion for light-emitting electrochemical cells

A. Maurucaite, K. Leduskrasts, E. Suna, A. Vembris

Proceedings Volume 12149, 121490A (2022) https://doi.org/10.1117/12.2621829

KEYWORDS: Thin films, Luminescence, Ions, Polymers, Polymethylmethacrylate, Quantum efficiency, Molecules, Electrodes, Organic light emitting diodes, Optical properties

Read Abstract +

Light-emitting electrochemical cells (LEEC) are relatively easy-to-fabricate thin-film lighting devices. Therefore, LEECs have been already successfully used in high-end smart lighting applications such as light-emitting clothes and emissive textiles, rollable and stretchable wallpaper-like lamps, and biocompatible light sources for in vivo or epidermal medical devices. However, most of the LEECs utilize ionic metal complexes as emitters that consist of the rear element Iridium. Ionic small molecules (SM) as light emitters could be a better solution to the low-cost device. In the work, we have investigated purely organic ionic compound that could exhibit aggregate induced emission. The compounds consist of the carbazole group and pyridinium ion as a cation. Perchlorate was used as an anion. Emission spectra, fluorescence kinetics and photoluminescence quantum yield (PLQY) were measured in polymer doped thin films. Polymethyl methacrylate (PMMA) was used as an additive. Photoluminescence quantum yield is 73% in powder and 45% in the pure thin film. It is further decreasing on the increase of PMMA mass ratio in the system which is the proof of aggregation-induced emission effect. The sample with the emitter:PMMA at mass ratio 9:1 exhibited the same emission properties as neat films but in addition was also optically clear those this system was used in LEEC. The LEEC cells with the simple structure ITO/PEDOT:PSS/Emitter:PMMA(9:1)/Al were prepared. The maximum brightness was 27 cd/m2 with the turn-on voltage of 8.7 V and CIE coordinates x=0.21 and y=0.29.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years