The role of OLED emissive layer polarization in sub-turn-on charge accumulation

Pakhomenko, Evgeny; Holmes, Russell J.

doi:10.1117/12.2633591

Organic and Hybrid Light Emitting Materials and Devices XXVI 2022

DOI: 10.1117/12.2633591

|View full text |Cite

The role of OLED emissive layer polarization in sub-turn-on charge accumulation

Evgeny Pakhomenko

Russell J. Holmes²

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2023

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Understanding and engineering spontaneous orientation polarization in organic light-emitting devices

Pakhomenko

Holmes

2023

Chemical Physics Reviews

View full text Add to dashboard Cite

Organic light-emitting devices (OLEDs) are a ubiquitous technology for displays with growing application in a variety of other spaces. The future success of this technology depends on further improvements in device efficiency and stability. One pathway for improvement relies on engineering molecular orientation in the organic thin films comprising an OLED. This review is focused on the subsequent spontaneous alignment of molecular electric dipole moments, known as spontaneous orientation polarization (SOP), a phenomenon observed for many common OLED materials. The magnitude of polarization fields associated with SOP rival what is experienced in an OLED under high injection and can significantly impact electronic and excitonic behavior. Here, we first review current work describing the mechanism for the formation of SOP, reflecting an interplay between several factors, such as molecular shape, intermolecular interactions, and processing conditions. We also consider several strategies to tune the polarization sign and magnitude, with emphasis on connecting observations to quantitative models of SOP formation. Building on this discussion of SOP in organic thin films, we review how polarization in OLED active layers impacts key aspects of device performance, including charge injection, luminescence efficiency, and stability. Finally, this review concludes with an outlook on areas of future development needed to realize broad control over SOP for a variety of applications, highlighting gaps in our current understanding of this phenomenon.

show abstract

Understanding and engineering spontaneous orientation polarization in organic light-emitting devices

Pakhomenko

Holmes

2023

Chemical Physics Reviews

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

The role of OLED emissive layer polarization in sub-turn-on charge accumulation

Cited by 1 publication

References 28 publications

Understanding and engineering spontaneous orientation polarization in organic light-emitting devices

Understanding and engineering spontaneous orientation polarization in organic light-emitting devices

Contact Info

Product

Resources

About