CsPbBr 3 Solar Cells: Controlled Film Growth through Layer-by-Layer Quantum Dot Deposition
Abstract
All inorganic cesium lead bromide (CsPbBr3) perovskite is a more stable alternative to methylammonium lead bromide (MAPbBr3) for designing high open-circuit voltage solar cells and display devices. Poor solubility of CsBr in organic solvents makes typical solution deposition methods difficult to adapt for constructing CsPbBr3 devices. Our layer-by-layer methodology, which makes use of CsPbBr3 quantum dot (QD) deposition followed by annealing, provides a convenient way to cast stable films of desired thickness. The transformation from QDs into bulk during thermal annealing arises from the resumption of nanoparticle growth and not from sintering as generally assumed. Additionally, a large loss of organic material during the annealing process is mainly from 1-octadecene left during the QD synthesis. Utilizing this deposition approach for perovskite photovoltaics is examined using typical planar architecture devices. Devices optimized to both QD spin-casting concentration and overall CsPbBr3 thickness produce champion devices that reach power conversion efficiencies of 5.5% with a Voc value of 1.4 V. Finally, the layered QD deposition demonstrates a controlled perovskite film architecture for developing efficient, high open-circuit photovoltaic devices.
- Authors:
-
- Radiation Laboratory, ‡Department of Chemistry & Biochemistry, and §Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Publication Date:
- Research Org.:
- Univ. of Notre Dame, IN (United States). Radiation Laboratory
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1408150
- Alternate Identifier(s):
- OSTI ID: 1413252
- Grant/Contract Number:
- FC02-04ER15533
- Resource Type:
- Published Article
- Journal Name:
- Chemistry of Materials
- Additional Journal Information:
- Journal Name: Chemistry of Materials Journal Volume: 29 Journal Issue: 22; Journal ID: ISSN 0897-4756
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 14 SOLAR ENERGY
Citation Formats
Hoffman, Jacob B., Zaiats, Gary, Wappes, Isaac, and Kamat, Prashant V. CsPbBr 3 Solar Cells: Controlled Film Growth through Layer-by-Layer Quantum Dot Deposition. United States: N. p., 2017.
Web. doi:10.1021/acs.chemmater.7b03751.
Hoffman, Jacob B., Zaiats, Gary, Wappes, Isaac, & Kamat, Prashant V. CsPbBr 3 Solar Cells: Controlled Film Growth through Layer-by-Layer Quantum Dot Deposition. United States. https://doi.org/10.1021/acs.chemmater.7b03751
Hoffman, Jacob B., Zaiats, Gary, Wappes, Isaac, and Kamat, Prashant V. Thu .
"CsPbBr 3 Solar Cells: Controlled Film Growth through Layer-by-Layer Quantum Dot Deposition". United States. https://doi.org/10.1021/acs.chemmater.7b03751.
@article{osti_1408150,
title = {CsPbBr 3 Solar Cells: Controlled Film Growth through Layer-by-Layer Quantum Dot Deposition},
author = {Hoffman, Jacob B. and Zaiats, Gary and Wappes, Isaac and Kamat, Prashant V.},
abstractNote = {All inorganic cesium lead bromide (CsPbBr3) perovskite is a more stable alternative to methylammonium lead bromide (MAPbBr3) for designing high open-circuit voltage solar cells and display devices. Poor solubility of CsBr in organic solvents makes typical solution deposition methods difficult to adapt for constructing CsPbBr3 devices. Our layer-by-layer methodology, which makes use of CsPbBr3 quantum dot (QD) deposition followed by annealing, provides a convenient way to cast stable films of desired thickness. The transformation from QDs into bulk during thermal annealing arises from the resumption of nanoparticle growth and not from sintering as generally assumed. Additionally, a large loss of organic material during the annealing process is mainly from 1-octadecene left during the QD synthesis. Utilizing this deposition approach for perovskite photovoltaics is examined using typical planar architecture devices. Devices optimized to both QD spin-casting concentration and overall CsPbBr3 thickness produce champion devices that reach power conversion efficiencies of 5.5% with a Voc value of 1.4 V. Finally, the layered QD deposition demonstrates a controlled perovskite film architecture for developing efficient, high open-circuit photovoltaic devices.},
doi = {10.1021/acs.chemmater.7b03751},
journal = {Chemistry of Materials},
number = 22,
volume = 29,
place = {United States},
year = {Thu Nov 09 00:00:00 EST 2017},
month = {Thu Nov 09 00:00:00 EST 2017}
}
https://doi.org/10.1021/acs.chemmater.7b03751
Web of Science
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