Assessment of carrier-multiplication efficiency in bulk PbSe and PbS

Nature Physics

Volumn 5, Issue 11, 2009, Pages 811-814

  Pijpers, J J H ^a   Ulbricht, R ^a   Tielrooij, K J ^a   Osherov, A ^b   Golan, Y ^b   Delerue, C ^c   Allan, G ^c   Bonn, M ^a  

^a FOM INSTITUTE AMOLF   (Netherlands)

^b BEN GURION UNIVERSITY OF THE NEGEV   (Israel)

^c INSTITUT D ELECTRONIQUE   (France)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRON ENERGY LEVELS; IV-VI SEMICONDUCTORS; LEAD COMPOUNDS; NANOCRYSTALLINE MATERIALS; NANOCRYSTALS; PHOTONS; QUANTUM EFFICIENCY; SELENIUM COMPOUNDS; SEMICONDUCTOR QUANTUM DOTS; SOLAR CELLS;

CARRIER MULTIPLICATION; CARRIER MULTIPLICATION EFFICIENCY; DENSITY OF STATE; DISCRETE ENERGY LEVELS; ELECTRON HOLE PAIRS; MULTIPLE CHARGE; SOLAR CELL EFFICIENCIES; TIGHT-BINDING CALCULATIONS;

SULFUR COMPOUNDS;

EID: 70449525556     PISSN: 17452473     EISSN: 17452481     Source Type: Journal    
DOI: 10.1038/nphys1393     Document Type: Article

References (30)

1. Nozik, A. J. Quantum dot solar cells. Physica E 14, 115-120 (2002).
2. Schaller, R. D. & Klimov, V. I. High efficiency carrier multiplication in PbSe nanocrystals: Implications for solar energy conversion. Phys. Rev. Lett. 92, 186601 (2004).
3. Klimov, V. I. Spectral and dynamical properties of multiexcitons in semiconductor nanocrystals. Annu. Rev. Phys. Chem. 58, 635-673 (2007).
4. Trumm, S. et al. Ultrafast spectroscopy of impact ionization and avalanche multiplication in GaAs. Appl. Phys. Lett. 88, 132113 (2006).
5. Ellingson, R. J. et al. Highly efficient multiple exciton generation in colloidal PbSe and PbS quantum dots. Nano Lett. 5, 865-871 (2005).
6. Schaller, R. D., Agranovich, V. M. & Klimov, V. I. High-efficiency carrier multiplication through direct photogeneration of multi-excitons via virtual single-exciton states. Nature Phys. 1, 189-194 (2005).
7. Schaller, R. D., Sykora, M., Pietryga, J. M. & Klimov, V. I. Seven excitons at a cost of one: Redefining the limits for conversion efficiency of photons into charge carriers. Nano Lett. 6, 424-429 (2006).
8. Trinh, M. T. et al. In spite of recent doubts carrier multiplication does occur in PbSe nanocrystals. Nano Lett. 8, 1713-1718 (2008).
9. Ji, M. et al. Efficient multiple exciton generation observed in colloidal PbSe quantum dots with temporally and spectrally resolved intraband excitation. Nano Lett. 9, 1217-1222 (2009).
10. Murphy, J. E. et al. PbTe colloidal nanocrystals: Synthesis, characterization, and multiple exciton generation. J. Am. Chem. Soc. 128, 3241-3247 (2006).
11. Schaller, R. D., Petruska, M. A. & Klimov, V. I. Effect of electronic structure on carrier multiplication efficiency: Comparative study of PbSe and CdSe nanocrystals. Appl. Phys. Lett. 87, 253102 (2005).
12. Beard, M. C. et al. Multiple exciton generation in colloidal silicon nanocrystals. Nano Lett. 7, 2506-2512 (2007).
13. Pijpers, J. J. H. et al. Carrier multiplication and its reduction by photodoping in colloidal InAs quantum dots. J. Phys. Chem. C 111, 4146-4152 (2007).
14. Schaller, R. D., Pietryga, J. M. & Klimov, V. I. Carrier multiplication in InAs nanocrystal quantum dots with an onset defined by the energy conservation limit. Nano Lett. 7, 3469-3476 (2007).
15. Nair, G. & Bawendi, M. G. Carrier multiplication yields of CdSe and CdTe nanocrystals by transient photoluminescence spectroscopy. Phys. Rev. B 76, 081304 (2007).
16. Pijpers, J. J. H. et al. Carrier multiplication and its reduction by photodoping in colloidal InAs quantum dots. J. Phys. Chem. C 112, 4783-4784 (2008).
17. Ben-Lulu, M. et al. On the absence of detectable carrier multiplication in a transient absorption study of InAs/CdSe/ZnSe core/shell1/shell2 quantum dots. Nano Lett. 8, 1207-1211 (2008).
18. Nair, G., Geyer, S. M., Chang, L.-Y. & Bawendi, M. G. Carrier multiplication yields in PbS and PbSe nanocrystals measured by transient photoluminescence. Phys. Rev. B 78, 125325 (2008).
19. McGuire, J. A. et al. New aspects of carrier multiplication in semiconductor nanocrystals. Acc. Chem. Res. 41, 1810-1819 (2008).
20. Allan, G. & Delerue, C. Role of impact ionization in multiple exciton generation in PbSe nanocrystals. Phys. Rev. B 73, 205423 (2006).
21. Smith, A. & Dutton, D. Behavior of lead sulfide photocells in the ultraviolet. J. Opt. Soc. Am. 48, 1007-1009 (1958).
22. Klimov, V. I. & McBranch, D. W. Femtosecond 1P-to-1S electron relaxation in strongly confined semiconductor nanocrystals. Phys. Rev. Lett. 80, 4028-4031 (1998).
23. Guyot-Sionnest, P., Shim, M., Matranga, C. & Hines, M. Intraband relaxation in CdSe quantum dots. Phys. Rev. B 60, R2181-R2184 (1999).
24. Pandey, A. & Guyot-Sionnest, P. Slow electron cooling in colloidal quantum dots. Science 322, 929-932 (2008).
25. Jeon, T.-I. & Grischkowsky, D. Nature of conduction in doped silicon. Phys. Rev. Lett. 78, 1106-1109 (1997).
26. Beard, M. C., Turner, G. M. & Schmuttenmaer, C. A. Terahertz spectroscopy. J. Phys. Chem. B 106, 7146-7159 (2002).
27. Hendry, E., Koeberg, M., Pijpers, J. & Bonn, M. Reduction of carrier mobility in semiconductors caused by charge-charge interactions. Phys. Rev. B 75, 233202 (2007).
28. Franceschetti, A., An, J. M. & Zunger, A. Impact ionization can explain carrier multiplication in PbSe quantum dots. Nano Lett. 6, 2191-2195 (2006).
29. Rabani, E. & Baer, R. Distribution of multiexciton generation rates in CdSe and InAs nanocrystals. Nano Lett. 8, 4488-4492 (2008).
30. Barton, C. F. Electron effective mass in PbS single crystals by infrared reflectivity measurements. J. Appl. Phys. 42, 445-450 (1971).