Air-Stable and Efficient PbSe Quantum-Dot Solar Cells Based upon ZnSe to PbSe Cation-Exchanged Quantum Dots

Sungwoo Kim; Ashley R. Marshall; Daniel M. Kroupa; Elisa M. Miller; Joseph M. Luther; Sohee Jeong; Matthew C. Beard

doi:10.1021/acsnano.5b02326

Air-Stable and Efficient PbSe Quantum-Dot Solar Cells Based upon ZnSe to PbSe Cation-Exchanged Quantum Dots

Sungwoo Kim, Ashley R. Marshall, Daniel M. Kroupa, Elisa M. Miller, Joseph M. Luther, Sohee Jeong, Matthew C. Beard

Research output: Contribution to journal › Article › peer-review

102 Scopus Citations

Abstract

We developed a single step, cation-exchange reaction that produces air-stable PbSe quantum dots (QDs) from ZnSe QDs and PbX₂ (X = Cl, Br, or I) precursors. The resulting PbSe QDs are terminated with halide anions and contain residual Zn cations. We characterized the PbSe QDs using UV-vis-NIR absorption, photoluminescence quantum yield spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy. Solar cells fabricated from these PbSe QDs obtained an overall best power conversion efficiency of 6.47% at one sun illumination. The solar cell performance without encapsulation remains unchanged for over 50 days in ambient conditions; and after 50 days, the National Renewable Energy Laboratory certification team certified the device at 5.9%. (Graph Presented).

Original language	American English
Pages (from-to)	8157-8164
Number of pages	8
Journal	ACS Nano
Volume	9
Issue number	8
DOIs	https://doi.org/10.1021/acsnano.5b02326 https://doi.org/10.1021/acsnano.5b02326
State	Published - 2015

Bibliographical note

Publisher Copyright:
© 2015 American Chemical Society.

NREL Publication Number

NREL/JA-5900-64134

Keywords

cation exchange
halide passivation
PbSe QDs
quantum dots (QD)
solar cells

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title = "Air-Stable and Efficient PbSe Quantum-Dot Solar Cells Based upon ZnSe to PbSe Cation-Exchanged Quantum Dots",

abstract = "We developed a single step, cation-exchange reaction that produces air-stable PbSe quantum dots (QDs) from ZnSe QDs and PbX2 (X = Cl, Br, or I) precursors. The resulting PbSe QDs are terminated with halide anions and contain residual Zn cations. We characterized the PbSe QDs using UV-vis-NIR absorption, photoluminescence quantum yield spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy. Solar cells fabricated from these PbSe QDs obtained an overall best power conversion efficiency of 6.47% at one sun illumination. The solar cell performance without encapsulation remains unchanged for over 50 days in ambient conditions; and after 50 days, the National Renewable Energy Laboratory certification team certified the device at 5.9%. (Graph Presented).",

keywords = "cation exchange, halide passivation, PbSe QDs, quantum dots (QD), solar cells",

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AU - Kim, Sungwoo

AU - Marshall, Ashley R.

AU - Kroupa, Daniel M.

AU - Miller, Elisa M.

AU - Luther, Joseph M.

AU - Jeong, Sohee

AU - Beard, Matthew C.

PY - 2015

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AB - We developed a single step, cation-exchange reaction that produces air-stable PbSe quantum dots (QDs) from ZnSe QDs and PbX2 (X = Cl, Br, or I) precursors. The resulting PbSe QDs are terminated with halide anions and contain residual Zn cations. We characterized the PbSe QDs using UV-vis-NIR absorption, photoluminescence quantum yield spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy. Solar cells fabricated from these PbSe QDs obtained an overall best power conversion efficiency of 6.47% at one sun illumination. The solar cell performance without encapsulation remains unchanged for over 50 days in ambient conditions; and after 50 days, the National Renewable Energy Laboratory certification team certified the device at 5.9%. (Graph Presented).

KW - cation exchange

KW - halide passivation

KW - PbSe QDs

KW - quantum dots (QD)

KW - solar cells

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Air-Stable and Efficient PbSe Quantum-Dot Solar Cells Based upon ZnSe to PbSe Cation-Exchanged Quantum Dots

Abstract

Bibliographical note

NREL Publication Number

Keywords

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