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Single QD Nanowire LEDs

Single QD Nanowire LEDs. Devang Parekh 3/7/07 EE235. Overview. Background Fabrication Results Conclusions. Background. LEDs Single Photon Sources Photon-Electron Turnstiles Quantum Optics. Kim et. al. Nano Lett. (2004). T=420 o C. DEZn. TMI. PH 3. AsH 3. H 2 S. Fabrication.

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Single QD Nanowire LEDs

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  1. Single QD Nanowire LEDs Devang Parekh 3/7/07 EE235

  2. Overview • Background • Fabrication • Results • Conclusions

  3. Background • LEDs • Single Photon Sources • Photon-Electron Turnstiles • Quantum Optics Kim et. al. Nano Lett. (2004)

  4. T=420oC DEZn TMI PH3 AsH3 H2S Fabrication

  5. NW PN Junction

  6. EL PN Junction

  7. TEM QD Nanowire

  8. EL QD Nanowire • 1.4-2.2V Bias • 10K • InAsP (~1.31eV) • InP (>1.42eV)

  9. PL QD Nanowire

  10. Conclusion • Photoluminescence is shown • Electroluminescence is shown • Barriers needed to narrow linewidth • Good candidate for single photon source in infrared

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