Nano Biochip Research Group, Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis (UniMAP), Kangar, Perlis 01000, Malaysia.
Nanoscale Res Lett. 2014 Jan 15;9(1):29. doi: 10.1186/1556-276X-9-29.
Selective area growth of ZnO nanorods is accomplished on microgap electrodes (spacing of 6 μm) by using a facile wet chemical etching process. The growth of ZnO nanorods on a selected area of microgap electrode is carried out by hydrothermal synthesis forming nanorod bridge between two electrodes. This is an attractive, genuine, direct, and highly reproducible technique to grow nanowire/nanorod onto the electrodes on selected area. The ZnO nanorods were grown at 90°C on the pre-patterned electrode system without destroying the electrode surface structure interface and geometry. The ZnO nanorods were tested for their application in ultraviolet (UV) sensors. The photocurrent-to-dark (Iph/Id) ratio was 3.11. At an applied voltage of 5 V, the response and recovery time was 72 and 110 s, respectively, and the response reached 2 A/W. The deposited ZnO nanorods exhibited a UV photoresponse that is promising for future cost-effective and low-power electronic UV-sensing applications.
通过使用简单的湿法化学刻蚀工艺，在微间隙电极（间隔 6μm）上实现了 ZnO 纳米棒的选择区域生长。通过在两个电极之间形成纳米棒桥的水热合成，在微间隙电极的选定区域上进行了 ZnO 纳米棒的生长。这是一种有吸引力的、真实的、直接的和高度可重复的技术，可将纳米线/纳米棒生长到选定区域的电极上。在 90°C 下，在预图案化的电极系统上生长 ZnO 纳米棒，而不会破坏电极表面结构界面和几何形状。对 ZnO 纳米棒进行了应用于紫外（UV）传感器的测试。光电流与暗电流（Iph/Id）的比值为 3.11。在 5V 的外加电压下，响应和恢复时间分别为 72 和 110s，响应达到 2A/W。沉积的 ZnO 纳米棒表现出了紫外光响应，有望在未来实现具有成本效益和低功耗的电子紫外感应应用。
