Opto-Electronic Engineering, Volume. 51, Issue 7, 240088(2024)

Perovskite quantum dot color conversion Micro-LEDs: progress in stability and patterning

Zijun Yan1,†... Zhong Liu1,†, Xiao Yang1, Shouqiang Lai1, Fengyu Yan2, Zongmin Lin1,3, Yue Lin1,5, Yijun Lv1,5, Haochung Kuo4, Zhong Chen1,5, and Tingzhu Wu15,* |Show fewer author(s)
Author Affiliations
  • 1School of Electronic Science and Engineering, Xiamen University, Xiamen, Fujian 361000, China
  • 2Fujian HeYi IOT Technology Co., Zhangzhou, Fujian 363000, China
  • 3Quanzhou Sanan Semiconductor Technology Co., Quanzhou, Fujian 362000, China
  • 4Department of Photonics and Graduate Institute of Electro-Optical Engineering, Yang Ming Chiao Tung University, Hsinchu, Taiwan 30010, China
  • 5Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen, Fujian 361000, China
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    Micro light-emitting diode (Micro-LED) display is considered the "next-generation" ultimate display technology due to its excellent display performance and optoelectronic properties. In order to meet the requirements of near-eye display applications, further miniaturization and integration of Micro-LED are necessary. With the continuous innovation of micro/nanopatterning technology, the fluorescent color conversion layer method has significant advantages such as low manufacturing cost. Compared to the three-color chip method, it is more suitable for virtual/augmented reality display applications that demand higher color gamut and resolution. Perovskite quantum dots (PQDs) are the most promising fluorescent color conversion materials. However, the inherent lattice instability of PQDs and degradation caused by external environmental factors pose significant challenges. Furthermore, it is crucial to develop micro-scale fluorescent array patterns that match the Micro-LED chip array. Therefore, this paper first discusses the factors that affect the structural instability of perovskite quantum dots. Then, it summarizes the applications of strategies such as ligand exchange, ion doping, surface coating, and chemical cross-linking in enhancing the stability of perovskite quantum dots. Finally, the latest research progress for fabricating high-resolution perovskite quantum dot fluorescent arrays using photolithography and inkjet printing techniques is summarized.

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    Zijun Yan, Zhong Liu, Xiao Yang, Shouqiang Lai, Fengyu Yan, Zongmin Lin, Yue Lin, Yijun Lv, Haochung Kuo, Zhong Chen, Tingzhu Wu. Perovskite quantum dot color conversion Micro-LEDs: progress in stability and patterning[J]. Opto-Electronic Engineering, 2024, 51(7): 240088

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    Paper Information

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    Received: Apr. 12, 2024

    Accepted: Jul. 8, 2024

    Published Online: Nov. 12, 2024

    The Author Email: Wu Tingzhu (吴挺竹)

    DOI:10.12086/oee.2024.240088

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