@article{3c20c692b35a436e9b260b8c78e7a8f1,
title = "P-type modulation doped InGaN/GaN dot-in-a-wire white-light-emitting diodes monolithically grown on Si(111)",
abstract = "Full-color, catalyst-free InGaN/GaN dot-in-a-wire light-emitting diodes (LEDs) were monolithically grown on Si(111) by molecular beam epitaxy, with the emission characteristics controlled by the dot properties in a single epitaxial growth step. With the use of p-type modulation doping in the dot-in-a-wire heterostructures, we have demonstrated the most efficient phosphor-free white LEDs ever reported, which exhibit an internal quantum efficiency of ∼56.8%, nearly unaltered CIE chromaticity coordinates with increasing injection current, and virtually zero efficiency droop at current densities up to ∼640 A/cm2. The remarkable performance is attributed to the superior three-dimensional carrier confinement provided by the electronically coupled dot-in-a-wire heterostructures, the nearly defect- and strain-free GaN nanowires, and the significantly enhanced hole transport due to the p-type modulation doping.",
keywords = "InGaN, Nanowire, light-emitting diodes, molecular beam epitaxy, p-doping, quantum dot",
author = "Nguyen, {H. P.T.} and S. Zhang and K. Cui and X. Han and S. Fathololoumi and M. Couillard and Botton, {G. A.} and Z. Mi",
note = "Funding Information: Funding This work was supported in part by the Deutsche Forschungsgemeinschaft (grant SFB841 to Samuel Huber, Nicola Gagliani, Ansgar W. Lohse, grant DFG TRR241 A03 to Andrey A. Kruglov and grant SFB1328 to Samuel Huber, Nicola Gagliani, and Andreas H. Guse), the European Research Council (starting grant 337251 to Samuel Huber), Ernst Jung-Stiftung Hamburg (to Samuel Huber), Stiftung Experimentelle Biomedizin (to Samuel Huber), and the Howard Hughes Medical Institute (to Richard A. Flavell). Samuel Huber has an endowed Heisenberg-Professorship awarded by the Deutsche Forschungsgemeinschaft . All data necessary to understand and assess the conclusions of the article are available in the body of the article and in the Supplementary Materials . Il22- (VG1150) and Il22bp- (VG437) deficient mice are available from Regeneron under a material transfer agreement with the University Medical Center Hamburg-Eppendorf. Agonistic and Antagonistic lymphotoxin beta receptor antibodies were kindly provided by Biogen.inc under a material transfer agreement with the University Medical Center Hamburg-Eppendorf. ",
year = "2011",
month = may,
day = "11",
doi = "10.1021/nl104536x",
language = "English (US)",
volume = "11",
pages = "1919--1924",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "5",
}