Chemically Driven Interfacial Coupling in Charge-Transfer Mediated Functional Superstructures

BB Xu and HS Li and HQ Li and AJ Wilson and L Zhang and K Chen and KA Willets and F Ren and JC Grossman and SQ Ren, NANO LETTERS, 16, 2851-2859 (2016).

DOI: 10.1021/acs.nanolett.6b00712

Organic charge-transfer superstructures are enabling new interfacial electronics, such as organic thermoelectrics, spin-charge converters, and solar cells. These carbon-based materials could also play an important role in spin-based electronics due to their exceptionally long spin lifetime. However, to explore these potentials a coherent design strategy to control interfacial charge-transfer interaction is indispensable. Here we report that the control of organic crystallization and interfacial electron coupling are keys to dictate external stimuli responsive behaviors in organic charge-transfer superstructures. The integrated experimental and computational study reveals the importance of chemically driven interfacial coupling in organic charge-transfer superstructures. Such degree of engineering opens up a new route to develop a new generation of functional charge- transfer materials, enabling important advance in all organic interfacial electronics.

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