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Xin Liu, Xianliang Wang, Bin Zhou, Wing-Cheung Law, Alexander N. Cartwright and Mark T. Swihart Size-Controlled Synthesis of Cu2-xE (E = S, Se) Nanocrystals with Strong Tunable Near-Infrared Localized Surface Plasmon Resonance and High Conductivity in Thin Films Advanced Functional Materials 23

Version of Record online: 15 OCT 2012 | DOI: 10.1002/adfm.201202061

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Preparation of self-doped Cu2-xE (E = S, Se) nanocrystals (NCs) with controlled size is demonstrated. Strong near-infrared (NIR) localized surface plasmon resonance absorption demonstrates that the particles are heavily doped. The NIR localized surface plasmon resonance (LSPR) is tuned by simple changes in the synthesis conditions. This approach provides a new pathway to control both the size and the cationic deficiency of Cu2-xSe and Cu2-xS NCs.

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