Photocurrent Properties of Plasmonic Nanoantennas Embedded with PbSe Colloidal Quantum Dots

Iftach Ilsar School of Chemistry, Tel Aviv University, Tel-Aviv, Israel Dan Lavee School of Chemistry, Tel Aviv University, Tel-Aviv, Israel Philipp Sulzer Department of Physics, University of Konstanz, Konstanz, Germany Marina Karpov School of Chemistry, Tel Aviv University, Tel-Aviv, Israel Diana Yanover Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, Israel Arthur Shapiro Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, Israel Efrat Lifshitz Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, Israel Yoram Selzer School of Chemistry, Tel Aviv University, Tel-Aviv, Israel

The enormous enhancement of optical fields within the gaps of nanoantennas can be exploited for improved harvesting and detection of light. When semiconductor colloidal quantum dots (CQD) are embedded within such antennas, unique optoelectronic devices are realized with high sensitivity and fast response time which profit from the optical tunability of both the CQDs and the antennas.
Such electro-optical devices reveal intricate interactions between their current and optical properties.
We study these interactions in nanoantennas embedded with PbSe CQDs. The devices response to light as a function of bias and wavelength appears to be non-trivial and unique.

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