An integrated approach to realizing high-performance liquid-junction quantum dot sensitized solar cells

Hunter McDaniel, Nobuhiro Fuke, Nikolay S. Makarov, Jeffrey M. Pietryga, Victor I Klimov

Research output: Contribution to journalArticle

167 Citations (Scopus)

Abstract

Solution-processed semiconductor quantum dot solar cells offer a path towards both reduced fabrication cost and higher efficiency enabled by novel processes such as hot-electron extraction and carrier multiplication. Here we use a new class of low-cost, low-toxicity CuInSe x S 2-x quantum dots to demonstrate sensitized solar cells with certified efficiencies exceeding 5%. Among other material and device design improvements studied, use of a methanol-based polysulfide electrolyte results in a particularly dramatic enhancement in photocurrent and reduced series resistance. Despite the high vapour pressure of methanol, the solar cells are stable for months under ambient conditions, which is much longer than any previously reported quantum dot sensitized solar cell. This study demonstrates the large potential of CuInSe x S 2-x quantum dots as active materials for the realization of low-cost, robust and efficient photovoltaics as well as a platform for investigating various advanced concepts derived from the unique physics of the nanoscale size regime.

Original languageEnglish
Article number2887
JournalNature Communications
Volume4
DOIs
Publication statusPublished - Dec 10 2013

Fingerprint

Quantum Dots
Semiconductor quantum dots
Solar cells
solar cells
quantum dots
Liquids
liquids
Costs and Cost Analysis
Methanol
methyl alcohol
Equipment Design
polysulfides
Vapor Pressure
Costs
Semiconductors
Hot electrons
Physics
Vapor pressure
Photocurrents
hot electrons

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Chemistry(all)
  • Physics and Astronomy(all)

Cite this

An integrated approach to realizing high-performance liquid-junction quantum dot sensitized solar cells. / McDaniel, Hunter; Fuke, Nobuhiro; Makarov, Nikolay S.; Pietryga, Jeffrey M.; Klimov, Victor I.

In: Nature Communications, Vol. 4, 2887, 10.12.2013.

Research output: Contribution to journalArticle

McDaniel, Hunter ; Fuke, Nobuhiro ; Makarov, Nikolay S. ; Pietryga, Jeffrey M. ; Klimov, Victor I. / An integrated approach to realizing high-performance liquid-junction quantum dot sensitized solar cells. In: Nature Communications. 2013 ; Vol. 4.
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