Opto-Electronic Engineering, Volume. 51, Issue 7, 240088(2024)
Perovskite quantum dot color conversion Micro-LEDs: progress in stability and patterning
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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Received: Apr. 12, 2024
Accepted: Jul. 8, 2024
Published Online: Nov. 12, 2024
The Author Email: Wu Tingzhu (吴挺竹)