Solution-Phase Synthesis of SnSe Nanocrystals for Use in Solar Cells

Matthew A. Franzman, Cody W. Schlenker, Mark E. Thompson, Richard L. Brutchey

Research output: Contribution to journalArticlepeer-review

265 Scopus citations

Abstract

Nanocrystals of phase-pure tin(II) selenide (SnSe) were synthesized via a solution-phase route employing stoichiometric amounts of di-tert-butyl dlselenlde as a novel and facile selenium source. The direct band gap of the resulting nanocrystals (E8 = 1.71 eV) is significantly blue-shifted relative to the bulk value (E8 = 1.30 eV), a likely consequence of quantum confinement resulting from the relatively small average diameter of the nanocrystals (μD < 20 nm). Preliminary solar cell devices incorporating SnSe nanocrystals into a poly[2-methoxy5-(3',7'-d1methyloctyloxy)-1,4- phenylenev1nylene] matrix demonstrate a significant enhancement In quantum efficiency and short-circuit current density, suggesting that this earth-abundant material could be a valuable component In future photovoltaic devices. Copyright © 2010 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)4060-4061
Number of pages2
JournalJournal of the American Chemical Society
Volume132
Issue number12
DOIs
StatePublished - Mar 31 2010
Externally publishedYes

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