Schottky Solar Cells Based on Colloidal Nancrystal Films

Joseph M. Luther, Matt Law, Matthew C. Beard, Qing Song, Matthew O. Reese, Randy J. Ellingson, Arthur J. Nozik

Research output: Contribution to journalArticlepeer-review

891 Scopus Citations

Abstract

We describe here a simple, all-inorganic metal/NC/metal sandwich photovoltaic (PV) cell that produces an exceptionally large short-circuit photocurrent (>21 mA cm -2) by way of a Schottky junction at the negative electrode. The PV cell consists of a PbSe NC film, deposited via layer-by-layer (LbL) dip coating that yields an EQE of 55-65% in the visible and up to 25% in the infrared region of the solar spectrum, with a spectrally corrected AM1.5G power conversion efficiency of 2.1%. This NC device produces one of the largest short-circuit currents of any nanostructured solar cell, without the need for sintering, superlattice order or separate phases for electron and hole transport.

Original languageAmerican English
Pages (from-to)3488-3492
Number of pages5
JournalNano Letters
Volume8
Issue number10
DOIs
StatePublished - Oct 2008

NREL Publication Number

  • NREL/JA-270-42904

Keywords

  • dip coating
  • efficiency
  • electrons
  • Lawrence Berkeley National Laboratory
  • photocurrents
  • sintering
  • solar cells
  • superlattices
  • transport

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