Tu-CHS-06 - Self-Powered Gas Sensing in Interface Engineered 2D layered Heterostructures

Event

EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich

Band

Poster

Chapter

Chemical Sensors

Author(s)

D. Mondal, V. Kamble - Indian Institute of Science Education and Research Thiruvananthapuram,Thiruvananthapuram (India)

Pages

429 - 430

DOI

10.5162/eurosensors2026/Tu-CHS-06

ISBN

978-3-910600-12-6

Price

free

Abstract

The development of self-powered gas sensors is critical for enabling low-power, autonomous sensing systems, yet achieving high sensing performance without external bias remains a significant challenge. Self-powered gas sensing, enabled by built-in electric fields at carefully engineered heterointerfaces, offers a compelling pathway beyond this limitation. In this work, we present a comparative investigation of self-powered gas sensors based on both Transition metal dichalcogenide (TMD)-oxide and TMDTMD interfaces. The three distinct 2D interface devices studied here are, MoSe 2 -MoO 2 , MoS 2 -MoO 2 and ReS 2 -MoS 2 , employed via single-step CVD method. Across all three systems, reproducible zero-bias sensing responses and enhanced performance under photo-activation are observed, pointing to interface-driven charge separation as the governing mechanism. These findings collectively establish a generalized design framework in which interface engineering underpins self-powered sensing behaviour, rather than material choice alone.