High efficiency heavy metal free QD‐LEDs for next generation displays
Journal of the Society for Information Display2019Vol. 27(6), pp. 338–346
Citations Over TimeTop 10% of 2019 papers
Christian Ippen, Wenzhuo Guo, Don Zehnder, Daekyoung Kim, Jesse R. Manders, Diego Barrera, Benjamin Newmeyer, Dylan Hamilton, Chun‐Ming Wang, Charlie Hotz, Ruiqing Ma, Jong‐Kwan Bin, ByungGeol Kim, KyuNam Kim, Kyungkook Jang, Jaehyun Park, Taeyang Lee, Wy‐Yong Kim, JounHo Lee
Abstract
Abstract In this paper, we report on our progress on developing heavy metal free (or Cd‐free) QD‐LEDs for all three colors. With improvement in synthesis, we have developed high quantum yield heavy metal free quantum dots (more than 95% for red and green and more than 80% for blue), with peak wavelengths suitable for BT.2020. Building upon these high‐performance quantum dots and through novel device structure design and optimization we have demonstrated high efficiency heavy metal free QD‐LEDs with EQE = 16.9%, 13%, 9% for red, green, and blue, respectively. Specifically, we report a systematic study on the impact of shell thickness to the device efficiency performance.
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