A highly selective and self-powered gas sensor via organic surface functionalization of p-Si/n-ZnO diodes

Adv Mater. 2014 Dec 17;26(47):8017-22. doi: 10.1002/adma.201403073. Epub 2014 Oct 29.

Abstract

Selectivity and low power consumption are major challenges in the development of sophisticated gas sensor devices. A sensor system is presented that unifies selective sensor-gas interactions and energy-harvesting properties, using defined organic-inorganic hybrid materials. Simulations of chemical-binding interactions and the consequent electronic surface modulation give more insight into the complex sensing mechanism of selective gas detection.

Keywords: density functional theory (DFT); hybrid materials; selective sensing; self-assembled monolayers; self-powered.