A facile, cost effective, patterned ZnO microwires synthesis for large-scale fabrication of piezoelectric-generator | |
| Author | Khan, Salman Ahmed |
| Subject(s) | Fabrications Cost effectiveness Piezoelectricity |
| Note | The degree of Doctor of Engineering in Mechatronics, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The patterned synthesis of n-type Zinc Oxide (ZnO) microwires (μWs) is vital for energy harvesting applications otherwise very less or no energy is obtained. The patterned synthesis of n-type ZnO μWs has been extensively studied via lithographic routes like electron beam, nanosphere and nanoimprint. The cost effectiveness, reliability with high-throughput cannot be obtained with lithographic routes. First Lithography is a slow process because selected region is scanned pixel by pixel that’s why exposures consume multiple hours to finish so cannot be recommended for industrial application. Second lithography equipment expensive in term of capital investment and maintenance point of view. The aim of this paper is to demonstrate a simple, fast and cost effective synthesis of patterned μWs on anodic aluminum oxide (AAO) template for the large-scale fabrication of high output PGs. The grown μWs have been characterized using XRD, SEM, TEM and EDX. The TEM micrographs has confirmed the n-type ZnO μWs were single crystalline and along c-axis. The study of XRD revealed that the ZnO μWs had wurtzite structure with well-defined growth along c-axis. The SEM micrographs confirmed the uniformity of the ZnO μWs with same diameter and height. The SEM micrograph of AAO membrane were taken after the second step anodization in oxalic acid at 0° C for 24 hrs and confirmed the diameter of pores were about 55-65 nm. The electrical values of the PG, open-circuit voltage output is about 4-6 mV and short-circuit current output is nearly 0.5 - 1 μA. |
| Year | 2015 |
| School | School of Engineering and Technology (SET) |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Microelectronics (ME) |
| Chairperson(s) | Afzulpurkar, Nitin V. |
| Examination Committee(s) | Bohez, Erik L. J.;Mongkol Ekpanyapong;Chumnarn Punyasai; |