Electrically driven single quantum dot emitter operating at room temperature

We present a green emitting single quantum dot light emitter integrated into a resonant-cavity diode design. Most important, electroluminescence stemming from one individual quantum dot is obtained at room temperature with a surprisingly low operation voltage of 2.6 V. This demonstrates that our single quantum dot device is ideally suited for electrically driven nonclassical light generation under ambient conditions. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3009302]