Tunable Nanoscale Metal‒Molecule‒Semiconductor Junctions via Light-Controlled Molecular Orientation.

ABSTRACT: Molecular electronics offers significant potential for the development of miniaturized and tunable electronic devices, with silicon (Si) remaining a cornerstone of modern semiconductor technology. This study presents a method for constructing tunable molecular circuits on Si electrodes using UV-controlled hydrosilylation reaction, enabling precise control over molecular orientation and bonding. When hydrogen-terminated Si surfaces are exposed to UV light in a solution of 9-decyne-1-ol, hydroxyl (OH) groups form covalent Si─O─C bonds, while in the absence of UV light, alkyne groups instead react to form Si─C bonds. This tunability allows precise positioning of oxygen atoms near the Si surface, thereby enhancing charge transfer in metal-molecule-semiconductor junctions and at electrified sem

SUBMITTER: Dief EM 

PROVIDER: S-EPMC12288777 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature