A Short Review on Properties and Applications of Zinc Oxide Based Thin Films and Devices : ZnO as a promising material for applications in electronics, optoelectronics, biomedical and sensors. Issue 2 (1st April 2020)

• Record Type: Journal Article
• Authors: Vyas, Sumit
• Is Part Of: Johnson Matthey technology review. Volume 64:Issue 2(2020:Apr.)
• Page Start: 202
• Page End: 218
• Publication Date: 2020-04-01
• Subjects: Technology -- Periodicals; Chemical engineering -- Periodicals; Metallurgy -- Periodicals; Materials -- Periodicals; Research, Industrial -- Periodicals; Periodicals; 605
• DOI: 10.1595/205651320X15694993568524
• Languages: English
• ISSNs: 2056-5135

Abstract

Zinc oxide has emerged as an attractive material for various applications in electronics, optoelectronics, biomedical and sensing. The large excitonic binding energy of 60 meV at room temperature as compared to 25 meV of gallium nitride, an III-V compound makes ZnO an efficient light emitter in the ultraviolet (UV) spectral region and hence favourable for optoelectronic applications. The high conductivity and transparency of ZnO makes it important for applications like transparent conducting oxides (TCO) and thin-film transistors (TFT). In this paper, the optoelectronic, electronic and other properties that make ZnO attractive for a variety of applications are discussed. Various applications of ZnO thin film and its devices such as light-emitting diodes (LED), UV sensors, biosensors, photodetectors and TFT that have been described by various research groups are presented.