Synthesis and characterization of Al- and In-doped CdSe nanocrystals

Andrew W. Wills, Moon Sung Kang, Katherine M. Wentz, Sophia E. Hayes, Ayaskanta Sahu, Wayne L. Gladfelter, David J. Norris

Research output: Contribution to journalArticle

Abstract

Al- and In-doped CdSe nanocrystals were synthesized using a three-part core-shell synthesis. CdSe core nanocrystals were first prepared, then allowed to react with dopant precursors in the presence of weakly binding ligands, and finally overcoated with an additional shell of CdSe. The addition of Al dopants quickened shell overgrowth and led to more monodisperse nanocrystals while the addition of In dopants produced more polydisperse particles, as seen by absorption spectroscopy. Elemental analysis combined with chemical etching revealed the dopants were inside the particles and solid state 27Al nuclear magnetic resonance (NMR) spectra indicated that the Al impurities were well dispersed. When the Al-doped nanocrystals were processed into thin-film transistors, enhanced n-type transport was observed with a rise in the Fermi level compared to undoped particles.

Original languageEnglish (US)
Pages (from-to)6335-6342
Number of pages8
JournalJournal of Materials Chemistry
Volume22
Issue number13
DOIs
StatePublished - Apr 7 2012

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Synthesis and characterization of Al- and In-doped CdSe nanocrystals'. Together they form a unique fingerprint.

  • Cite this

    Wills, A. W., Kang, M. S., Wentz, K. M., Hayes, S. E., Sahu, A., Gladfelter, W. L., & Norris, D. J. (2012). Synthesis and characterization of Al- and In-doped CdSe nanocrystals. Journal of Materials Chemistry, 22(13), 6335-6342. https://doi.org/10.1039/c2jm00068g