Systematic optimization of quantum junction colloidal quantum dot solar cells

Huan Liu, David Zhitomirsky, Sjoerd Hoogland, Jiang Tang, Illan J. Kramer, Zhijun Ning, Edward H. Sargent

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

The recently reported quantum junction architecture represents a promising approach to building a rectifying photovoltaic device that employs colloidal quantum dot layers on each side of the p-n junction. Here, we report an optimized quantum junction solar cell that leverages an improved aluminum zinc oxide electrode for a stable contact to the n-side of the quantum junction and silver doping of the p-layer that greatly enhances the photocurrent by expanding the depletion region in the n-side of the device. These improvements result in greater stability and a power conversion efficiency of 6.1 under AM1.5 simulated solar illumination. © 2012 American Institute of Physics.
Original languageEnglish (US)
Pages (from-to)151112
JournalApplied Physics Letters
Volume101
Issue number15
DOIs
StatePublished - Oct 11 2012
Externally publishedYes

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