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Communication

N-Type Colloidal-Quantum-Dot Solids for Photovoltaics

  1. David Zhitomirsky1,
  2. Melissa Furukawa1,
  3. Jiang Tang2,
  4. Philipp Stadler1,
  5. Sjoerd Hoogland1,
  6. Oleksandr Voznyy1,
  7. Huan Liu3,
  8. Edward H. Sargent1,*

Article first published online: 12 SEP 2012

DOI: 10.1002/adma.201202825

Issue

Advanced Materials

Advanced Materials

Volume 24, Issue 46, pages 6181–6185, December 4, 2012

Additional Information

How to Cite

Zhitomirsky, D., Furukawa, M., Tang, J., Stadler, P., Hoogland, S., Voznyy, O., Liu, H. and Sargent, E. H. (2012), N-Type Colloidal-Quantum-Dot Solids for Photovoltaics. Adv. Mater., 24: 6181–6185. doi: 10.1002/adma.201202825

Author Information

  1. 1

    Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada

  2. 2

    Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan, Hubei 430074, China

  3. 3

    Department of Electronic Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan, Hubei 430074, China

*Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada.

Publication History

  1. Issue published online: 29 NOV 2012
  2. Article first published online: 12 SEP 2012
  3. Manuscript Revised: 16 AUG 2012
  4. Manuscript Received: 12 JUL 2012

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Keywords:

  • n-type materials;
  • doping;
  • PbS;
  • colloidal quantum dots;
  • photovoltaics
Thumbnail image of graphical abstract

N-type PbS colloidal-quantum-dot (CQD) films are fabricated using a controlled halide chemical treatment, applied in an inert processing ambient environment. The new materials exhibit a mobility of 0.1 cm2 V−1 s−1. The halogen ions serve both as a passivating agent and n-dope the films via substitution at surface chalcogen sites. The majority electron concentration across the range 1016 to 1018 cm−3 is varied systematically.

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