P‐9.1: QD based color converter with DBR Structure and its application on Micro‐LED. (4th October 2019)

• Record Type: Journal Article
• Authors: Weng, Yalian; Yan, Qun; Guo, Tailiang; Yongai, ; Zhang, ; Zhou, Xiongtu
• Is Part Of: Digest of technical papers. Volume 50(2019)Supplement 1
• Page Start: 856
• Page End: 858
• Publication Date: 2019-10-04
• Subjects: simulation -- atomic layer deposition (ALD) -- distributed Bragg reflector (DBR) -- water vapor transmission rates (WVTR) -- light extraction efficiency; Information display systems -- Congresses; 621.3815422
• DOI: 10.1002/sdtp.13670
• Languages: English
• ISSNs: 0097-966X

Abstract

Abstract : An enhancement of light extraction efficiency of quantum dots (QD) in light‐emitting diodes (LEDs) with Bi‐functional TiO2 /Al2 O3 distributed Bragg reflector (DBR) nanolaminate structure grown by atomic layer deposition (ALD) has been demonstrated. The DBRs were simulated and optimized with TFCalc, and they exhibited excellent and tunable optical properties, as well as reliable moisture barrier performance. These DBRs were integrated in the QD‐LED, enabling an obvious increase in red emission and a strong decrease in blue light transmittance, which can achieve color conversion greatly. Furthermore, these DBRs can prolong the lifetime of QDs evidently by isolating the QDs from the moisture vapor. These results highlight the potential application of DBRs in the QLEDs and QD‐LEDs.