81‐3: Distinguished Paper: Developing High Efficiency Heavy Metal Free QD‐LEDs for Next Generation Displays
SID Symposium Digest of Technical Papers2019Vol. 50(1), pp. 1168–1171
Citations Over Time
Christian Ippen, Wenzhuo Guo, Don Zehnder, Daekyoung Kim, Jesse R. Manders, Diego Barrera, Benjamin Newmeyer, Dylan Hamilton, Chunming Wang, Charlie Hotz, Ruiqing Ma, Jong‐Kwan Bin, ByungGeol Kim, KyuNam Kim, Kyungkook Jang, Jaehyun Park, Taeyang Lee, Wy‐Yong Kim, JounHo Lee
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 QDs (>95% for Red and Green; >80% for Blue) with peak wavelengths suitable for BT.2020. Building upon these high performance QDs 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, Blue, respectively.
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