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Novel type of nanoscale modification of organic semiconductors: self-assembled monolayers at organic surfaces

Categories: Laboratory for Surface Modification (LSM)
Speaker: Vitaly Podzorov, Rutgers Physics
Date & Time: September 10, 2009 - 12:00pm
Location: Chem. 260

It was discovered that self-assembled monolayers (SAM) of silanes could be grown directly at the surface of small-molecule [1] and polymer [2] organic semiconductors, the materials of a great interest for organic electronics. One of the most interesting consequences of SAM formation on these materials is a high-density 2D hole gas induced at the SAM-organic interface [1,2]. This talk will cover our basic observations and other interesting effects related to this phenomenon. It will also include a discussion of surface characterization of pristine and SAM-modified molecular crystals and conjugated polymers, providing insights into the SAM composition and growth mechanism. Novel transport and optical properties of SAM-functionalized organic semiconductors will be briefly discussed [3].

1. M. F. Calhoun et al., "Electronic functionalization of the surface of organic semiconductors with self-assembled monolayers", Nature Mat. 7, 84 (2008).
2. C.-Y. Kao et al, "Doping of conjugated polythiophenes with alkyl silanes", Adv. Funct. Mater. 19, 1 (2009).
3. B. Lee et al., to appear in Adv. Funct. Mater. (2009).

Advancing Nanotechnology - IAMDN New Microscopes


Rutgers new scanning transmission electron microscope and new helium ion microscope help researchers develop nanotechnology used to fight cancer, generate power, and create more powerful electronics. Watch the video to learn more.

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