Acid vapor-induced enhanced electrical current rectification in phenothiazine-based electronic devices
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F25%3A00639802" target="_blank" >RIV/61388963:_____/25:00639802 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1039/D5SC03848K" target="_blank" >https://doi.org/10.1039/D5SC03848K</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d5sc03848k" target="_blank" >10.1039/d5sc03848k</a>
Alternative languages
Result language
angličtina
Original language name
Acid vapor-induced enhanced electrical current rectification in phenothiazine-based electronic devices
Original language description
Engineering transformable electronic features in two-terminal molecular junctions is of significant interest for advancing molecular-scale electronics. We demonstrate external stimuli (acid vapor)-responsive enhanced electrical current rectification (so called diode) in phenothiazine-based (R1) vertically stacked molecular junctions (MJs) with a configuration of p+-Si/R158 nm/ITO. The fabricated junctions exhibit nearly 530% enhancement in the electrical current rectification ratio (RR) in response to acid-vapor exposure for 60 seconds. The electronic functions of the devices can be partially set back using triethylamine (a weak base) vapor. Exposure to acid vapor forms cation radicals, (R1(center dot)+)H+, that bring the lowest unoccupied molecular orbital (LUMO) closer to the Fermi level (EF) of the ITO electrode in forward bias. In contrast, alignment of the highest occupied molecular orbital (HOMO) is not favorable under reverse bias conditions, which causes the emergence of the rectification ratio in the acid-exposed MJs. Electrical impedance spectra reveal a high charge transfer resistance (Rct) of about 6 M Omega in pristine MJs, behaving like a resistor. However, the acid vapor facilitates an enhanced current flow at the forward bias compared to that at the reverse bias, mimicking diode functionality. The molecular junctions scrutinized for alternating current (AC) to direct current (DC) conversion using a function generator exhibit optimal diode performance at 500 Hz. Our findings demonstrate a method for high-yield device fabrication (similar to 86% working devices) that can be utilized for acid- and base-vapor-facilitated transformable electronic functions mimicking traditional electronics.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical Science
ISSN
2041-6520
e-ISSN
2041-6539
Volume of the periodical
16
Issue of the periodical within the volume
39
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
18190-18200
UT code for WoS article
001568159200001
EID of the result in the Scopus database
2-s2.0-105018075904