High-Performance Ultrathin Molecular Rectifying Diodes Based on Organic/Inorganic Interface Engineering
Tipo
Artigo
Data de publicação
2022
Periódico
Advanced Functional Materials
Citações (Scopus)
13
Autores
Batista C.V.S.
Merces L.
Costa C.A.R.
de Camargo D.H.S.
Bufon C.C.B.
Merces L.
Costa C.A.R.
de Camargo D.H.S.
Bufon C.C.B.
Orientador
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Título de Volume
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Resumo
© 2021 Wiley-VCH GmbHThe bottom-up engineering of organic/inorganic hybrids is a crucial step toward advanced nanomaterial technologies. Understanding the energy level alignment at hybrid interfaces provides a valuable comprehension of the systems′ electronic properties – which are decisive for well-designed device applications. Here, active interfaces of ultrathin (≈10 nm) molecular rectifying diodes that are capable of achieving a 4-order-magnitude rectification ratio along with 10 MHz cutoff frequency, both in a single nanodevice, are engineered. Atomic force microscopy and Kelvin-Probe analysis are employed to investigate the surface potential of the hybrid devices′ organic/inorganic interfaces, which comprise a metal (M) electrode in contact with a few-nanometer-thick copper phthalocyanine (CuPc) film. Thereby a nanometer-resolved quantification of the CuPc film work functions as well as the M/CuPc diode's space-charge densities are delivered. By recognizing that the molecular rectifying diode is a functional building block for nanoscale electronics, the findings address crucial advances to the design of high-performance molecular rectifiers based on organic/inorganic interface engineering.
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Assuntos Scopus
Hybrid , Interface engineering , Kelvin probe , Nanomembrane origami , Nanomembranes , Organic-inorganic interface , Performance , Rectification ratio , Thin-films , Ultra-thin