CdS nanoscale photodetectors

Adv Mater. 2014 May;26(17):2619-35. doi: 10.1002/adma.201304621. Epub 2014 Mar 14.

Abstract

CdS nanostructures have received much attention in recent years as building blocks for optoelectronic devices due to their unique physical and chemical properties. This progress report provides an overview of recent research about rational design of CdS nanoscale photodetectors. Three kinds of photodetectors according to the metal-semiconductor contact types are discussed in detail: Ohmic contact, Schottky contact, and field enhanced transistor configuration. The focus is on the tuning of optical and electrical properties CdS nanostructures by element doping, composition and bandgap engineering, and heterojunction integration, along with thus modified device performances generated during these tuning processes. Latest concepts of photodetector design such as flexible, self-powered, plasmonic, and piezophototronic photodetectors with novel properties are introduced to demonstrate the future directions of such an exciting research field.

Keywords: CdS; nanoscale; nanostructures; optical sensors; photodetectors.

Publication types

  • Research Support, Non-U.S. Gov't