The effect of grid shape on the properties of transparent conductive films(TCFs) is theoretically analyzed and experimentally verified. The light transmittance by three types of grid shapes: triangle, square and hexag...The effect of grid shape on the properties of transparent conductive films(TCFs) is theoretically analyzed and experimentally verified. The light transmittance by three types of grid shapes: triangle, square and hexagon have been theoretically calculated and simulated. It was found that hexagonal grid unit has the highest light transmittance limit under the practical lattice parameters and its decrease in light transmittance caused by the increase of line width in printing process is the least. The grid of three different shapes with same theoretical transmittance is fabricated through flexographic printing. The result shows that the actual light transmittance of the printed TCFs is lower than its theoretical value because of the inevitable width increase of printed grid lines, with slight difference between the three shapes. However, it is greatly different in terms of conductivity, leading to variation in the quality factor Q(defined as the ratio of light transmittance to total resistance) which represents the performance of TCFs. The Q of hexagonal grid(6.04) is the highest, which is 21% higher than that of the square grid.展开更多
聚对苯二甲酸乙二醇酯(PET)具有优良的物理化学性能,其耐弯折性好、应用成本低廉,是柔性电子产品的重要目标基材之一,但其同时存在表面能低、粗糙度小、表面难以金属化且金属层与基材的附着力不佳的问题。提出了一种可靠且低成本的PET...聚对苯二甲酸乙二醇酯(PET)具有优良的物理化学性能,其耐弯折性好、应用成本低廉,是柔性电子产品的重要目标基材之一,但其同时存在表面能低、粗糙度小、表面难以金属化且金属层与基材的附着力不佳的问题。提出了一种可靠且低成本的PET基射频识别(Radio Frequency Identification,RFID)标签天线的卷对卷柔版印刷制备工艺。该技术以PET作为RFID标签天线的基材,以柔版印刷作为印刷技术,通过紫外固化技术对印制天线图案进行固化干燥,并采用化学沉积法制备RFID标签天线的金属层,具有工业化生产前景。通过扫描电子显微镜、X射线衍射与附着力测试证明了基材表面的金属层具有致密、结晶度高、附着力良好的优点,所得天线的电阻率低(2.98μΩ·cm)且机械性能良好(4000次弯曲)。展开更多
基金supported by the Beijing Municipal Commission of Education Foundation for School Innovation Ability Promotion Plan(Grant No.TJSHG201310015016)the Key Project of Beijing Institute of Graphic Communication(Grant No.Ea201501)the Creative Groups of Materials and Technology of Printed Electronics(Grant No.23190113100)
文摘The effect of grid shape on the properties of transparent conductive films(TCFs) is theoretically analyzed and experimentally verified. The light transmittance by three types of grid shapes: triangle, square and hexagon have been theoretically calculated and simulated. It was found that hexagonal grid unit has the highest light transmittance limit under the practical lattice parameters and its decrease in light transmittance caused by the increase of line width in printing process is the least. The grid of three different shapes with same theoretical transmittance is fabricated through flexographic printing. The result shows that the actual light transmittance of the printed TCFs is lower than its theoretical value because of the inevitable width increase of printed grid lines, with slight difference between the three shapes. However, it is greatly different in terms of conductivity, leading to variation in the quality factor Q(defined as the ratio of light transmittance to total resistance) which represents the performance of TCFs. The Q of hexagonal grid(6.04) is the highest, which is 21% higher than that of the square grid.
文摘聚对苯二甲酸乙二醇酯(PET)具有优良的物理化学性能,其耐弯折性好、应用成本低廉,是柔性电子产品的重要目标基材之一,但其同时存在表面能低、粗糙度小、表面难以金属化且金属层与基材的附着力不佳的问题。提出了一种可靠且低成本的PET基射频识别(Radio Frequency Identification,RFID)标签天线的卷对卷柔版印刷制备工艺。该技术以PET作为RFID标签天线的基材,以柔版印刷作为印刷技术,通过紫外固化技术对印制天线图案进行固化干燥,并采用化学沉积法制备RFID标签天线的金属层,具有工业化生产前景。通过扫描电子显微镜、X射线衍射与附着力测试证明了基材表面的金属层具有致密、结晶度高、附着力良好的优点,所得天线的电阻率低(2.98μΩ·cm)且机械性能良好(4000次弯曲)。
