Hybrid passivated colloidal quantum dot solids

Nature Nanotechnology

Volumn 7, Issue 9, 2012, Pages 577-582

  Ip, Alexander H ^a   Thon, Susanna M ^a   Hoogland, Sjoerd ^a   Voznyy, Oleksandr ^a   Zhitomirsky, David ^a   Debnath, Ratan ^a   Levina, Larissa ^a   Rollny, Lisa R ^a   Carey, Graham H ^a   Fischer, Armin ^a   Kemp, Kyle W ^a   Kramer, Illan J ^a   Ning, Zhijun ^a   Labelle, Andrä J ^a   Chou, Kang Wei ^b   Amassian, Aram ^b   Sargent, Edward H ^a  

^a UNIVERSITY OF TORONTO   (Canada)

^b KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY   (Saudi Arabia)

Author keywords

[No Author keywords available]

Indexed keywords

CHELATION; CROSSLINKING; DENSITY FUNCTIONAL THEORY; LIGANDS; NANOCRYSTALS; OPTOELECTRONIC DEVICES; PASSIVATION; SEMICONDUCTOR QUANTUM DOTS; SOLAR CELLS; SOLAR POWER GENERATION;

COLLOIDAL QUANTUM DOTS; COLLOIDAL STABILITY; HOLE RECOMBINATION; PHOTOVOLTAIC DEVICES; QUANTUM SIZE EFFECTS; SOLUTION BASED APPROACHES; SOLUTION-PROCESSING; TRAP STATE DENSITY;

SOLS;

COLLOIDAL QUANTUM DOT; HALIDE; LIGAND; ORGANIC COMPOUND; QUANTUM DOT; UNCLASSIFIED DRUG;

ARTICLE; MOLECULAR HYBRIDIZATION; PRIORITY JOURNAL; SOLID STATE;

EID: 84866058749     PISSN: 17483387     EISSN: 17483395     Source Type: Journal    
DOI: 10.1038/nnano.2012.127     Document Type: Article

References (35)

1. Kramer, I. J. & Sargent, E. H. Colloidal quantum dot photovoltaics: a path forward. ACS Nano 5, 8506-8514 (2011).
2. Pattantyus-Abraham, A. G. et al. Depleted-heterojunction colloidal quantum dot solar cells. ACS Nano 4, 3374-3380 (2010).
3. Wang, X. et al. Tandem colloidal quantum dot solar cells employing a graded recombination layer. Nature Photon. 5, 480-484 (2011).
4. Semonin, O. E. et al. Peak external photocurrent quantum efficiency exceeding 100% via MEG in a quantum dot solar cell. Science 334, 1530-1533 (2011).
5. Kramer, I. J., Levina, L., Debnath, R., Zhitomirsky, D. & Sargent, E. H. Solar cells using quantum funnels. Nano Lett. 11, 3701-3706 (2011).
6. Schaller, R. & Klimov, V. High efficiency carrier multiplication in PbSe nanocrystals: implications for solar energy conversion. Phys. Rev. Lett. 92, 186601 (2004).
7. Gur, I., Fromer, N. A., Geier, M. L. & Alivisatos, A. P. Air-stable all-inorganic nanocrystal solar cells processed from solution. Science 310, 462-465 (2005). (Pubitemid 41507953)
8. Luther, J. M. et al. Structural, optical, and electrical properties of self-assembled films of PbSe nanocrystals treated with 1,2-ethanedithiol. ACS Nano 2, 271-280 (2008). (Pubitemid 351585942)
9. Law, M. et al. Structural, optical, and electrical properties of PbSe nanocrystal solids treated thermally or with simple amines. J. Am. Chem. Soc. 130, 5974-5985 (2008). (Pubitemid 351620844)
10. Koleilat, G. I. et al. Efficient, stable infrared photovoltaics based on solution-cast colloidal quantum dots. ACS Nano 2, 833-840 (2008).
11. Beard, M. C. et al. Variations in the quantum efficiency of multiple exciton generation for a series of chemically treated PbSe nanocrystal films. Nano Lett. 9, 836-845 (2009).
12. Tang, J. et al. Colloidal-quantum-dot photovoltaics using atomic-ligand passivation. Nature Mater. 10, 765-771 (2011).
13. Yu, M. et al. First principles study of CdSe quantum dots: stability, surface unsaturations, and experimental validation. Appl. Phys. Lett. 88, 231910 (2006).
14. Voznyy, O. Mobile surface traps in CdSe nanocrystals with carboxylic acid ligands. J. Phys. Chem. C 115, 15927-15932 (2011).
15. Owen, J. S., Park, J., Trudeau, P-E. & Alivisatos, A. P. Reaction chemistry and ligand exchange at cadmium-selenide nanocrystal surfaces. J. Am. Chem. Soc. 130, 12279-12281 (2008).
16. Mocatta, D. et al. Heavily doped semiconductor nanocrystal quantum dots. Science 332, 77-81 (2011).
17. Fu, H. et al. Impact of the growth conditions of colloidal PbS nanocrystals on photovoltaic device performance. Chem. Mater. 23, 1805-1810 (2011).
18. Nag, A. et al. Metal-free inorganic ligands for colloidal nanocrystals: S22, HS2, Se22, HSe2, Te22, HTe2, TeS3 2, OH2, and NH2 2 as surface ligands. J. Am. Chem. Soc. 133, 10612-10620 (2011).
19. Tang, J. et al. Quantum dot photovoltaics in the extreme quantum confinement regime: the surface-chemical origins of exceptional air- and light-stability. ACS Nano 4, 869-878 (2010).
20. Galland, C. et al. Two types of luminescence blinking revealed by spectroelectrochemistry of single quantum dots. Nature 479, 203-207 (2011).
21. Liu, Y. et al. Dependence of carrier mobility on nanocrystal size and ligand length in PbSe nanocrystal solids. Nano Lett. 10, 1960-1969 (2010).
22. Nagpal, P. & Klimov, V. I. Role of mid-gap states in charge transport and photoconductivity in semiconductor nanocrystal films. Nature Commun. 2, 486 (2011).
23. Shuttle, C. G. et al. Experimental determination of the rate law for charge carrier decay in a polythiophene: fullerene solar cell. Appl. Phys. Lett. 92, 093311 (2008).
24. O'Regan, B. C., Scully, S., Mayer, A. C., Palomares, E. & Durrant, J. The effect of Al2O3 barrier layers in TiO2/dye/CuSCN photovoltaic cells explored by recombination and DOS characterization using transient photovoltage measurements. J. Phys. Chem. B 109, 4616-4623 (2005).
25. Liu, H. et al. Electron acceptor materials engineering in colloidal quantum dot solar cells. Adv. Mater. 23, 3832-3837 (2011).
26. Moreels, I. et al. Size-dependent optical properties of colloidal PbS quantum dots. ACS Nano 3, 3023-3030 (2009).
27. Ito, S. et al. Control of dark current in photoelectrochemical (TiO2/I2-I3 2) and dye-sensitized solar cells. Chem. Commun. 4351-4353 (2005). (Pubitemid 41345359)
28. Huang, N. et al. Synergistic effects of ZnO compact layer and TiCl4 posttreatment for dye-sensitized solar cells. J. Power Sources 204, 257-264 (2012).
29. Yong, K-T., Sahoo, Y., Swihart, M. T. & Prasad, P. N. Shape control of CdS nanocrystals in one-pot synthesis. J. Phys. Chem. C 111, 2447-2458 (2007). (Pubitemid 46774477)
30. Heitsch, A. T., Patel, R. N., Goodfellow, B. W., Smilgies, D-M. & Korgel, B. A. GISAXS characterization of order in hexagonal monolayers of FePt nanocrystals. J. Phys. Chem. C 114, 14427-14432 (2010).
31. Jiang, Z., Lin, X-M., Sprung, M., Narayanan, S. & Wang, J. Capturing the crystalline phase of two-dimensional nanocrystal superlattices in action. Nano Lett. 10, 799-803 (2010).
32. Hanrath, T., Choi, J. J. & Smilgies, D-M. Structure/processing relationships of highly ordered lead salt nanocrystal superlattices. ACS Nano 3, 2975-2988 (2009).
33. Naka, S., Okada, H., Onnagawa, H. & Tsutsui, T. High electron mobility in bathophenanthroline. Appl. Phys. Lett. 76, 197-199 (2000).
34. Kalyuzhny, G. & Murray, R. W. Ligand effects on optical properties of CdSe nanocrystals. J. Phys. Chem. B 109, 7012-7021 (2005). (Pubitemid 40609833)
35. Hines, M. A. & Scholes, G. D. Colloidal PbS nanocrystals with size-tunable nearinfrared emission: observation of post-synthesis self-narrowing of the particle size distribution. Adv. Mater. 15, 1844-1849 (2003).