Layered materials, like transition metal dichalcogenides, exhibit broad spectra with outstanding properties with huge application potential, whereas another group of related materials, layered transition metal trichalcogenides, remains unexplored. Here, we show the broad application potential of this interesting structural type of layered tantalum trisulfide prepared in a form of nanofibers. This material shows tailorable attractive electronic properties dependent on the tensile strain applied to it. Structure of this so-called orthorhombic phase of TaS3 grown in a form of long nanofibers has been solved and refined. Taking advantage of these capabilities, we demonstrate a highly specific impedimetric NO gas sensor based on TaS3 nanofibers as well as construction of photodetectors with excellent responsivity and field-effect transistors. Various flexible substrates were used for the construction of a NO gas sensor. Such a device exhibits a low limit of detection of 0.48 ppb, well under the allowed value set by environmental agencies for NOx (50 ppb). Moreover, this NO gas sensor also showed excellent selectivity in the presence of common interferences formed during fuel combustion. TaS3 nanofibers produced in large scale exhibited excellent broad application potential for various types of devices covering nanoelectronic, optoelectronic, and gas-sensing applications.
Bibliographical noteFunding Information:
Z.S., Š.H., D.S., and J.L. thank the Specific University Research (MSMT No 20-SVV/2017) and Czech Science Foundation (GACR No. 17-11456S) for financial support. This work was created with the financial support of the Neuron Foundation for science support. P.L. acknowledges support from the Ministry of Education, Youth and Sports of the Czech Republic (Project LO1305). R.M. thanks to the project CEDAMNF, reg. no. CZ.02.1.01/0.0/0.0/15_003/0000358, co-funded by the ERDF. Authors acknowledge support from Ministry of Education, Singapore via Tier 1 (99/13) grant. This work was supported by the project Advanced Functional Nanorobots (Reg. No. CZ.02.1.01/0.0/0.0/15_003/0000444 financed by the EFRR).
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Physics and Astronomy(all)