Can Thi Thu Thuy, Nguyen Tuan Canh, Choi Woon-Seop
Department of Display Engineering, Hoseo University, Asan, Chungnam, 31499, Korea.
Sci Rep. 2019 Jun 24;9(1):9180. doi: 10.1038/s41598-019-45504-5.
Electrohydrodynamic (EHD) jet printing has a variety of benefits compared to conventional inkjet techniques, such as high resolution and the ability to work with high-viscosity pastes. In this work, Ag nanoparticles with 4000 cPs were chosen because they are printable on various substrates for electronic devices. The effects of additive on the high-viscosity Ag paste formulation were investigated, and pattern lines narrower than 100 μm were achieved by EHD-jet printing with an average sheet resistance of 0.027 Ω □. Furthermore, solution-processed oxide TFTs were fabricated with EHD jet-printed Ag electrodes for the first time. The electrical properties obtained were a current ratio of 1.5 × 10, a mobility of approximately 1 cm V s, a threshold voltage of 21.5 V, and a subthreshold slope of 3.05 V dec.
与传统喷墨技术相比，电液动力（EHD）喷射印刷具有多种优势，例如高分辨率以及能够处理高粘度浆料。在这项工作中，选择了粘度为4000厘泊的银纳米颗粒，因为它们可印刷在各种用于电子设备的基板上。研究了添加剂对高粘度银浆料配方的影响，通过EHD喷射印刷获得了宽度小于100μm的图案线条，平均方块电阻为0.027Ω□。此外，首次使用EHD喷射印刷的银电极制造了溶液处理的氧化物薄膜晶体管。所获得的电学性能为电流比1.5×10、迁移率约为1 cm² V⁻¹ s⁻¹、阈值电压为21.5 V以及亚阈值斜率为3.05 V dec⁻¹。
