Effect of solvent environment on colloidal-quantum-dot solar-cell manufacturability and performance

Ahmad R. Kirmani; Graham H. Carey; Maged Abdelsamie; Buyi Yan; Dongkyu Cha; Lisa R. Rollny; Xiaoyu Cui; Edward H. Sargent; Aram Amassian

doi:10.1002/adma.201400577

Effect of solvent environment on colloidal-quantum-dot solar-cell manufacturability and performance

Ahmad R. Kirmani, Graham H. Carey, Maged Abdelsamie, Buyi Yan, Dongkyu Cha, Lisa R. Rollny, Xiaoyu Cui, Edward H. Sargent, Aram Amassian^*

^*Corresponding author for this work

Chemistry

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

82 Scopus citations

Abstract

The absorbing layer in state-of-the-art colloidal quantum-dot solar cells is fabricated using a tedious layer-by-layer process repeated ten times. It is now shown that methanol, a common exchange solvent, is the main culprit, as extended exposure leaches off the surface halide passivant, creating carrier trap states. Use of a high-dipole-moment aprotic solvent eliminates this problem and is shown to produce state-of-the-art devices in far fewer steps.

Original language	English (US)
Pages (from-to)	4717-4723
Number of pages	7
Journal	Advanced Materials
Volume	26
Issue number	27
DOIs	https://doi.org/10.1002/adma.201400577
State	Published - Jul 16 2014

Keywords

colloidal quantum dots
ligand exchange
roll-to-roll processing
thin films

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1002/adma.201400577

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title = "Effect of solvent environment on colloidal-quantum-dot solar-cell manufacturability and performance",

abstract = "The absorbing layer in state-of-the-art colloidal quantum-dot solar cells is fabricated using a tedious layer-by-layer process repeated ten times. It is now shown that methanol, a common exchange solvent, is the main culprit, as extended exposure leaches off the surface halide passivant, creating carrier trap states. Use of a high-dipole-moment aprotic solvent eliminates this problem and is shown to produce state-of-the-art devices in far fewer steps.",

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T1 - Effect of solvent environment on colloidal-quantum-dot solar-cell manufacturability and performance

AU - Kirmani, Ahmad R.

AU - Carey, Graham H.

AU - Abdelsamie, Maged

AU - Yan, Buyi

AU - Cha, Dongkyu

AU - Rollny, Lisa R.

AU - Cui, Xiaoyu

AU - Sargent, Edward H.

AU - Amassian, Aram

PY - 2014/7/16

Y1 - 2014/7/16

N2 - The absorbing layer in state-of-the-art colloidal quantum-dot solar cells is fabricated using a tedious layer-by-layer process repeated ten times. It is now shown that methanol, a common exchange solvent, is the main culprit, as extended exposure leaches off the surface halide passivant, creating carrier trap states. Use of a high-dipole-moment aprotic solvent eliminates this problem and is shown to produce state-of-the-art devices in far fewer steps.

AB - The absorbing layer in state-of-the-art colloidal quantum-dot solar cells is fabricated using a tedious layer-by-layer process repeated ten times. It is now shown that methanol, a common exchange solvent, is the main culprit, as extended exposure leaches off the surface halide passivant, creating carrier trap states. Use of a high-dipole-moment aprotic solvent eliminates this problem and is shown to produce state-of-the-art devices in far fewer steps.

KW - colloidal quantum dots

KW - ligand exchange

KW - roll-to-roll processing

KW - thin films

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JO - Advanced Materials

JF - Advanced Materials

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ER -

Effect of solvent environment on colloidal-quantum-dot solar-cell manufacturability and performance

Abstract

Keywords

ASJC Scopus subject areas

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