Electrohydrodynamic Inkjet Printing of Three-Dimensional Perovskite Nanocrystal Arrays for Full-Color Micro-LED Displays,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Electrohydrodynamic Inkjet Printing of Three-Dimensional Perovskite Nanocrystal Arrays for Full-Color Micro-LED Displays
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2024-05-05 , DOI: 10.1021/acsami.4c02594
Yihang Chen _{1,

2} , Xiao Yang _{1,

2,

3} , Xiaotong Fan _{1,

2} , Ao Kang _{1,

2} , Xuemin Kong _{1,

2} , Guolong Chen _{1,

2} , Chenming Zhong _{1,

2} , Yijun Lu _{1,

2,

4} , Yi Fan _{2,

5} , Xu Hou _{2,

4,

5} , Tingzhu Wu _{1,

2,

4} , Zhong Chen _{1,

2,

3,

4} , Shuli Wang _{1,

2} , Yue Lin _{1,

2,

4}

Affiliation

Perovskite nanocrystal (PeNC) arrays are showing a promising future in the next generation of micro-light-emitting-diode (micro-LED) displays due to the narrow emission linewidth and adjustable peak wavelength. Electrohydrodynamic (EHD) inkjet printing, with merits of high resolution, uniformity, versatility, and cost-effectiveness, is among the competent candidates for constructing PeNC arrays. However, the fabrication of red light-emitting CsPbBr_xI_(3–x) nanocrystal arrays for micro-LED displays still faces challenges, such as low brightness and poor stability. This work proposes a design for a red PeNC colloidal ink that is specialized for the EHD inkjet printing of three-dimensional PeNC arrays with enhanced luminescence and stability as well as being adaptable to both rigid and flexible substrates. Made of a mixture of PeNCs, polymer polystyrene (PS), and a nonpolar xylene solvent, the PeNC colloidal ink enables precise control of array sizes and shapes, which facilitates on-demand micropillar construction. Additionally, the inclusion of PS significantly increases the brightness and environmental stability. By adopting this ink, the EHD printer successfully fabricated full-color 3D PeNC arrays with a spatial resolution over 2500 ppi. It shows the potential of the EHD inkjet printing strategy for high-resolution and robust PeNC color conversion layers for micro-LED displays.

中文翻译：

用于全彩 Micro-LED 显示器的三维钙钛矿纳米晶体阵列的电流体动力喷墨打印

由于窄发射线宽和可调峰值波长，钙钛矿纳米晶体（PeNC）阵列在下一代微发光二极管（micro-LED）显示器中展现出广阔的前景。电流体动力（EHD）喷墨打印具有高分辨率、均匀性、多功能性和成本效益的优点，是构建PeNC阵列的有力候选者之一。然而，用于Micro LED显示器的红光CsPbBr _x I _{(3– x )}纳米晶体阵列的制造仍然面临着亮度低和稳定性差等挑战。这项工作提出了一种红色 PeNC 胶体墨水的设计，专门用于三维 PeNC 阵列的 EHD 喷墨打印，具有增强的发光性和稳定性，并且适用于刚性和柔性基材。 PeNC 胶体墨水由 PeNC、聚合物聚苯乙烯 (PS) 和非极性二甲苯溶剂的混合物制成，能够精确控制阵列尺寸和形状，从而有利于按需构建微柱。此外，PS 的加入显着提高了亮度和环境稳定性。通过采用这种墨水，EHD打印机成功制造了空间分辨率超过2500 ppi的全彩3D PeNC阵列。它展示了 EHD 喷墨打印策略在 Micro-LED 显示器高分辨率和稳健的 PeNC 颜色转换层方面的潜力。

更新日期：2024-05-05

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南