Hybrid nanocrystals-organic-semiconductor light sensor

T. Aqua*, R. Naaman, A. Aharoni, U. Banin, Y. Paltiel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

We present a light sensing device based on nearly spherical, defect free colloidal nanocrystals (NCs) of InAs acting as a light activated gate for a GaAsAlGaAs field effect semiconductor transistor. We use self-assembled organic monolayer as linkers that attach the InAs NCs to the surface of the semiconductor device, instead of the gate that exists in common transistors. When the NCs absorb light, at a frequency corresponding to their resonance, a change in the current through the transistor takes place while no current flows through the NCs themselves.

Original languageAmerican English
Article number223112
JournalApplied Physics Letters
Volume92
Issue number22
DOIs
StatePublished - 2008

Bibliographical note

Funding Information:
The authors thank Gilad Gotesman for performing the SEM images and Eyal Capua for preparing the semiconductor devices. This work was partially supported by the Israeli Ministry of Science and by the Grand Center at the Weizmann Institute.

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