Physically flexible, rapid-response gas sensor based on colloidal quantum dot solids

Huan Liu, Min Li, Oleksandr Voznyy, Long Hu, Qiuyun Fu*, Dongxiang Zhou, Zhe Xia, Edward H. Sargent, Jiang Tang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

253 Citations (Scopus)

Abstract

A gas sensor based on PbS colloidal quantum dots (CQDs) is constructed on a paper substrate, yielding flexible, rapid-response NO2 gas sensors, fabricated from the solution phase. The devices are highly sensitive and fully recoverable at room temperature, which is attributed to the excellent access of gas molecules to the CQD surface, realized by surface ligand removal, combined with the desirable binding energy of NO2 with the PbS CQDs.

Original languageEnglish
Pages (from-to)2718-2724
Number of pages7
JournalAdvanced Materials
Volume26
Issue number17
DOIs
Publication statusPublished - 7 May 2014
Externally publishedYes

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