We present an electrically driven single quantum dot emitter that is adapted for operation at room temperature. Epitaxially grown CdSe quantum dots were embedded between ZnSSe/MgS barriers optimized with respect to both, high quantum efficiency and efficient current injection at elevated temperatures. Most important, electroluminescence from one single quantum dot is observed even at room temperature with a surprisingly low driving voltage of 2.6 V. This might be a key step for a single photon emitter operating under ambient conditions.
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