PbSe Quantum Dot Passivated Via Mixed Halide Perovskite Nanocrystals for Solar Cells With Over 9% Efficiency Article Swipe
Long Hu
,
Zhilong Zhang
,
Robert Patterson
,
Sunil B. Shivarudraiah
,
Zhicong Zhou
,
Michael Ng
,
Shujuan Huang
,
Jonathan E. Halpert
·
YOU?
·
· 2018
· Open Access
·
· DOI: https://doi.org/10.1002/solr.201800234
YOU?
·
· 2018
· Open Access
·
· DOI: https://doi.org/10.1002/solr.201800234
PbSe quantum dots (QDs) have stronger electronic coupling resulting from a large Bohr exciton radius, suggesting PbSe QDs may be able to achieve superior charge separation and transport in optoelectronic devices compared with PbS QDs. However, PbS QDs solar cell have achieved a certified 12.01% power conversion efficiency (PCE), whereas PbSe QD photovoltaics lag behind at 8.2% PCE. One reason for this difference is that there has been significantly less work done on surface passivation of PbSe QDs. Here, the surface passivation of chlorinated PbSe QDs is optimized via a halide ion exchange treatment using mixed halide CsPb(Br/I) 3 perovskite nanocrystals. Champion devices made from treated QDs achieved a PCE of 9.2%, V oc of 0.56 V, J sc of 25.7 mA cm −2 , and fill factor of 64%. Average PCEs for optimized cells are 8.9%. Detailed physical characterizations including capacitance‐voltage ( C ‐ V ), V oc , and J sc as a function of light intensity, transient photovoltage, and photocurrent measurements are all carried out to investigate the mechanism of the improvement in the PCE and to understand the role of the mixed halide perovskites in providing superior surface passivation for PbSe solar cells. At this time, 9.2% is the highest PCE yet reported for PbSe QDs solar cells.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1002/solr.201800234
- OA Status
- green
- Cited By
- 34
- References
- 57
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W2899517842
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W2899517842Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1002/solr.201800234Digital Object Identifier
- Title
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PbSe Quantum Dot Passivated Via Mixed Halide Perovskite Nanocrystals for Solar Cells With Over 9% EfficiencyWork title
- Type
-
articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2018Year of publication
- Publication date
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2018-11-06Full publication date if available
- Authors
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Long Hu, Zhilong Zhang, Robert Patterson, Sunil B. Shivarudraiah, Zhicong Zhou, Michael Ng, Shujuan Huang, Jonathan E. HalpertList of authors in order
- Landing page
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https://doi.org/10.1002/solr.201800234Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
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greenOpen access status per OpenAlex
- OA URL
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https://hdl.handle.net/1959.4/unsworks_58924Direct OA link when available
- Concepts
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Passivation, Quantum dot, Materials science, Perovskite (structure), Optoelectronics, Photocurrent, Photovoltaics, Nanocrystal, Energy conversion efficiency, Solar cell, Halide, Nanotechnology, Chemistry, Photovoltaic system, Inorganic chemistry, Layer (electronics), Crystallography, Biology, EcologyTop concepts (fields/topics) attached by OpenAlex
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34Total citation count in OpenAlex
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2025: 2, 2024: 2, 2023: 5, 2022: 6, 2021: 7Per-year citation counts (last 5 years)
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10Other works algorithmically related by OpenAlex
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