Tunable band gap emission and surface passivation of germanium nanocrystals synthesized in the gas phase

Journal of Physical Chemistry Letters

Volumn 4, Issue 20, 2013, Pages 3392-3396

  Wheeler, Lance M ^a   Levij, Laszlo M ^b   Kortshagen, Uwe R ^a  

^a University of Minnesota   (United States)

^b EINDHOVEN UNIVERSITY OF TECHNOLOGY   (Netherlands)

Author keywords

near infrared; photoluminescence; plasma synthesis; quantum confinement; quantum dot

Indexed keywords

GERMANIUM NANOCRYSTALS; NEAR INFRARED; NEAR-INFRARED EMISSIONS; PLASMA SYNTHESIS; QUANTUM DOT; SPECTRAL LINE WIDTH; SURFACE PASSIVATION; SURFACE TRAP-STATES;

ENERGY GAP; GASES; INFRARED DEVICES; NANOCRYSTALS; PHOTOLUMINESCENCE; QUANTUM CONFINEMENT;

GERMANIUM;

EID: 84885987138     PISSN: None     EISSN: 19487185     Source Type: Journal    
DOI: 10.1021/jz401576b     Document Type: Article

References (31)

1. Nozik, A.; Beard, M.; Luther, J.; Law, M.; Ellingson, R.; Johnson, J. Semiconductor Quantum Dots and Quantum Dot Arrays and Applications of Multiple Exciton Generation to Third-Generation Photovoltaic Solar Cells Chem. Rev. 2010, 110, 6873
2. Pandey, A.; Guyot-Sionnest, P. Hot Electron Extraction from Colloidal Quantum Dots J. Phys. Chem. Lett. 2009, 1, 45-47
3. Prabakar, S.; Shiohara, A.; Hanada, S.; Fujioka, K.; Yamamoto, K.; Tilley, R. D. Size Controlled Synthesis of Germanium Nanocrystals by Hydride Reducing Agents and Their Biological Applications Chem. Mater. 2009, 22, 482-486
4. Holman, Z.; Kortshagen, U. R. Absolute Absorption Cross Sections of Ligand-Free Colloidal Germanium Nanocrystals Appl. Phys. Lett. 2012, 100, 133108-133108
5. Kanemitsu, Y.; Uto, H.; Masumoto, Y.; Maeda, Y. On the Origin of Visible Photoluminescence in Nanometer-Size Ge Crystallites Appl. Phys. Lett. 1992, 61, 2187-2189
6. 2 Matrices Phys. Rev. B 1998, 58, 7921
7. Holman, Z. C.; Kortshagen, U. R. Quantum Confinement in Germanium Nanocrystal Thin Films Phys. Status Solidi RRL 2011, 5, 110-112
8. Lee, D. C.; Pietryga, J. M.; Robel, I.; Werder, D. J.; Schaller, R. D.; Klimov, V. I. Colloidal Synthesis of Infrared-Emitting Germanium Nanocrystals J. Am. Chem. Soc. 2009, 131, 3436-3437
9. Ruddy, D. A.; Johnson, J. C.; Smith, E. R.; Neale, N. R. Size and Bandgap Control in the Solution-Phase Synthesis of Near-Infrared-Emitting Germanium Nanocrystals ACS Nano 2010, 4, 7459-7466
10. 2 Films Containing Ge Nanocrystals Appl. Phys. Lett. 1996, 68, 2511-2513
11. 2 Nanocrystals: The Role of Defects Appl. Phys. Lett. 1997, 71, 380-382
12. Knapp, D.; Brunschwig, B. S.; Lewis, N. S. Chemical, Electronic, and Electrical Properties of Alkylated Ge(111) Surfaces J. Phys. Chem. C 2010, 114, 12300-12307
13. Loscutoff, P. W.; Bent, S. F. Reactivity of the Germanium Surface: Chemical Passivation and Functionalization Annu. Rev. Phys. Chem. 2006, 57, 467-495
14. Hanrath, T.; Korgel, B. A. Chemical Surface Passivation of Ge Nanowires J. Am. Chem. Soc. 2004, 126, 15466-15472
15. Holman, Z.; Kortshagen, U. R. Solution-Processed Germanium Nanocrystal Thin Films as Materials for Low-Cost Optical and Electronic Devices Langmuir 2009, 25, 11883-11889
16. Collins, G.; Holmes, J. D. Chemical Functionalisation of Silicon and Germanium Nanowires J. Mater. Chem. 2011, 21, 11052-11069
17. Cullen, G. W.; Amick, J. A.; Gerlich, D. The Stabilization of Germanium Surfaces by Ethylation I. Chemical Treatment J. Electrochem. Soc. 1962, 109, 124-127
18. Wang, D.; Dai, H. Germanium Nanowires: From Synthesis, Surface Chemistry, and Assembly to Devices Appl. Phys. A: Mater. Sci. Process. 2006, 85, 217-225
19. Taylor, B. R.; Kauzlarich, S. M.; Lee, H. W. H.; Delgado, G. R. Solution Synthesis of Germanium Nanocrystals Demonstrating Quantum Confinement Chem. Mater. 1998, 10, 22-24
20. Chiu, H. W.; Kauzlarich, S. M. Investigation of Reaction Conditions for Optimal Germanium Nanoparticle Production by a Simple Reduction Route Chem. Mater. 2006, 18, 1023-1028
21. Gresback, R.; Holman, Z.; Kortshagen, U. R. Nonthermal Plasma synthesis of Size-Controlled, Monodisperse, Freestanding Germanium Nanocrystals Appl. Phys. Lett. 2007, 91, 093119/1-093119/3
22. Holman, Z. C.; Kortshagen, U. R. Nanocrystal Inks without Ligands: Stable Colloids of Bare Germanium Nanocrystals Nano Lett. 2011, 11, 2133-2136
23. Fuchs, R.; Moore, L. O.; Miles, D.; Gilman, H. Some Symmetrical Tetraalkyl- and Tetraaralkyl-germanes J. Org. Chem. 1956, 21, 1113-1117
24. Boukherroub, R.; Morin, S.; Bensebaa, F.; Wayner, D. New Synthetic Routes to Alkyl Monolayers on the Si(111) Surface Langmuir 1999, 15, 3831-3835
25. Fellah, S.; Teyssot, A.; Ozanam, F.; Chazalviel, J.-N.; Vigneron, J.; Etcheberry, A. Kinetics of Electrochemical Derivatization of the Silicon Surface by Grignards Langmuir 2002, 18, 5851-5860
26. Hill, N. A.; Pokrant, S.; Hill, A. J. Optical Properties of Si-Ge Semiconductor Nano-Onions J. Phys. Chem. B 1999, 103, 3156-3161
27. Heath, J. R.; Shiang, J. J.; Alivisatos, A. Germanium Quantum Dots: Optical Properties and Synthesis J. Chem. Phys. 1994, 101, 1607
28. Kortshagen, U. Nonthermal Plasma Synthesis of Semiconductor Nanocrystals J. Phys. D: Appl. Phys. 2009, 42, 113001
29. Jurbergs, D.; Rogojina, E.; Mangolini, L.; Kortshagen, U. R. Silicon Nanocrystals with Ensemble Quantum Yields Exceeding 60% Appl. Phys. Lett. 2006, 88, 233116-233116
30. Anthony, R. J.; Rowe, D. J.; Stein, M.; Yang, J.; Kortshagen, U. R. Routes to Achieving High Quantum Yield Luminescence from Gas-Phase-Produced Silicon Nanocrystals Adv. Funct. Mater. 2011, 21, 4042-4046
31. Holman, Z.; Kortshagen, U. R. A Flexible Method for Depositing Dense Nanocrystal Thin Films: Impaction of Germanium Nanocrystals Nanotechnology 2010, 21, 335302