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Programmed Molecular Assembly of Abrupt Crystalline Organic/Organic Heterointerfaces Yielding Metal-Organic Framework Diodes with Large On-Off Ratios.

ABSTRACT: Structurally well-defined, crystalline organic/organic heterojunctions between C₆₀- and anthracene-based semiconductors are realized via layer-by-layer deposition of metal-organic framework, MOF, thin films. As demonstrated by X-ray diffraction, perfect epitaxy is achieved by adjusting the lattice constants of the two different MOFs. Deposition of top electrodes allows to fabricate p-n as well as n-p devices. Measurements of the electrical properties reveal the presence of high-performance diodes, with a current on/off ratio of up to 6 orders of magnitude and an ideality factor close to unity. The crystalline nature of the abrupt organic/organic heterojunction provides the basis for a rational, simulation-based optimization and tailoring of such organic semiconductor interfaces.

SUBMITTER: Chandresh A

PROVIDER: S-EPMC8024988 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Programmed Molecular Assembly of Abrupt Crystalline Organic/Organic Heterointerfaces Yielding Metal-Organic Framework Diodes with Large On-Off Ratios.

Chandresh Abhinav A Liu Xiaojing X Wöll Christof C Heinke Lars L

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20210121 7

Structurally well-defined, crystalline organic/organic heterojunctions between C<sub>60</sub>- and anthracene-based semiconductors are realized via layer-by-layer deposition of metal-organic framework, MOF, thin films. As demonstrated by X-ray diffraction, perfect epitaxy is achieved by adjusting the lattice constants of the two different MOFs. Deposition of top electrodes allows to fabricate p-n as well as n-p devices. Measurements of the electrical properties reveal the presence of high-perfor ...[more]

PMID: 33854871

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