Operation mechanisms of prototypical quantum dot light-emitting diodes (Conference Presentation)

Hiroyoshi Naito

doi:10.1117/12.2637341

3 October 2022 Operation mechanisms of prototypical quantum dot light-emitting diodes (Conference Presentation)

Hiroyoshi Naito

Proceedings Volume 12208, Organic and Hybrid Light Emitting Materials and Devices XXVI; 1220806 (2022) https://doi.org/10.1117/12.2637341
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States

Abstract

Efficiency limiting factors of quantum dots light-emitting diodes (QLEDs) are studied by a machine learning approach using features taken from published data. Prototypical structure of Cd-based QLEDs is transparent conductive oxide (TCO)/hole transport layer (HTL)/quantum dots (QDs)/electron transport layer (ETL)/Al, fabricated by printing processes. The most important factor is the hole injection barrier from HTL to QD layer (about 1 eV in CdSe QLEDs). A mechanism of the hole injection in such QLEDs is discussed using device simulation, and the experimental results that support the mechanism are shown. In addition, other efficiency limiting factors - the electron mobility of HTL and carrier balance in QD layer - are experimentally shown.

Conference Presentation

Citation Download Citation

Hiroyoshi Naito "Operation mechanisms of prototypical quantum dot light-emitting diodes (Conference Presentation)", Proc. SPIE 12208, Organic and Hybrid Light Emitting Materials and Devices XXVI, 1220806 (3 October 2022); https://doi.org/10.1117/12.2637341

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