Identifying and Eliminating Emissive Sub-bandgap States in Thin Films of PbS Nanocrystals
Chemical oxidation of under-charged Pb atoms reduces the density of trap states by a factor of 40 in films of colloidal PbS quantum dots for devices. These emissive sub-bandgap states are a byproduct of several standard ligand-exchange procedures. X-ray photoelectron spectroscopy measurements and de...
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| Format: | Article |
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Wiley-Blackwell
2017
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| Online Access: | http://hdl.handle.net/1721.1/111826 https://orcid.org/0000-0002-2288-3735 https://orcid.org/0000-0002-6419-4129 https://orcid.org/0000-0002-1694-4722 https://orcid.org/0000-0002-1957-2979 https://orcid.org/0000-0003-0808-6518 https://orcid.org/0000-0003-1281-2359 https://orcid.org/0000-0003-2220-4365 |
| _version_ | 1826214704757866496 |
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| author | Hwang, Gyuweon Kim, Donghun Cordero Hernandez, Jose M. Wilson, Mark William Brennan Chuang, Chia-Hao Marcus Grossman, Jeffrey C. Bawendi, Moungi G |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Hwang, Gyuweon Kim, Donghun Cordero Hernandez, Jose M. Wilson, Mark William Brennan Chuang, Chia-Hao Marcus Grossman, Jeffrey C. Bawendi, Moungi G |
| author_sort | Hwang, Gyuweon |
| collection | MIT |
| description | Chemical oxidation of under-charged Pb atoms reduces the density of trap states by a factor of 40 in films of colloidal PbS quantum dots for devices. These emissive sub-bandgap states are a byproduct of several standard ligand-exchange procedures. X-ray photoelectron spectroscopy measurements and density function theory simulations demonstrate that they are associated with under-charged Pb. |
| first_indexed | 2024-09-23T16:10:09Z |
| format | Article |
| id | mit-1721.1/111826 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T16:10:09Z |
| publishDate | 2017 |
| publisher | Wiley-Blackwell |
| record_format | dspace |
| spelling | mit-1721.1/1118262022-09-29T18:42:01Z Identifying and Eliminating Emissive Sub-bandgap States in Thin Films of PbS Nanocrystals Hwang, Gyuweon Kim, Donghun Cordero Hernandez, Jose M. Wilson, Mark William Brennan Chuang, Chia-Hao Marcus Grossman, Jeffrey C. Bawendi, Moungi G Massachusetts Institute of Technology. Department of Chemistry Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Research Laboratory of Electronics Hwang, Gyuweon Kim, Donghun Cordero Hernandez, Jose M. Wilson, Mark William Brennan Chuang, Chia-Hao Marcus Grossman, Jeffrey C. Bawendi, Moungi G Chemical oxidation of under-charged Pb atoms reduces the density of trap states by a factor of 40 in films of colloidal PbS quantum dots for devices. These emissive sub-bandgap states are a byproduct of several standard ligand-exchange procedures. X-ray photoelectron spectroscopy measurements and density function theory simulations demonstrate that they are associated with under-charged Pb. United States. Department of Energy. Office of Basic Energy Sciences (Award DE-SC0001088) 2017-10-10T20:01:18Z 2017-10-10T20:01:18Z 2015-07 2015-05 2017-10-10T18:00:00Z Article http://purl.org/eprint/type/JournalArticle 0935-9648 1521-4095 http://hdl.handle.net/1721.1/111826 Hwang, Gyu Weon et al. "Identifying and Eliminating Emissive Sub-bandgap States in Thin Films of PbS Nanocrystals." Advanced Materials 27, 30 (July 2015): 4481–4486 © 2015 WILEY-VCH Verlag GmbH & Co. https://orcid.org/0000-0002-2288-3735 https://orcid.org/0000-0002-6419-4129 https://orcid.org/0000-0002-1694-4722 https://orcid.org/0000-0002-1957-2979 https://orcid.org/0000-0003-0808-6518 https://orcid.org/0000-0003-1281-2359 https://orcid.org/0000-0003-2220-4365 http://dx.doi.org/10.1002/ADMA.201501156 Advanced Materials Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Wiley-Blackwell PMC |
| spellingShingle | Hwang, Gyuweon Kim, Donghun Cordero Hernandez, Jose M. Wilson, Mark William Brennan Chuang, Chia-Hao Marcus Grossman, Jeffrey C. Bawendi, Moungi G Identifying and Eliminating Emissive Sub-bandgap States in Thin Films of PbS Nanocrystals |
| title | Identifying and Eliminating Emissive Sub-bandgap States in Thin Films of PbS Nanocrystals |
| title_full | Identifying and Eliminating Emissive Sub-bandgap States in Thin Films of PbS Nanocrystals |
| title_fullStr | Identifying and Eliminating Emissive Sub-bandgap States in Thin Films of PbS Nanocrystals |
| title_full_unstemmed | Identifying and Eliminating Emissive Sub-bandgap States in Thin Films of PbS Nanocrystals |
| title_short | Identifying and Eliminating Emissive Sub-bandgap States in Thin Films of PbS Nanocrystals |
| title_sort | identifying and eliminating emissive sub bandgap states in thin films of pbs nanocrystals |
| url | http://hdl.handle.net/1721.1/111826 https://orcid.org/0000-0002-2288-3735 https://orcid.org/0000-0002-6419-4129 https://orcid.org/0000-0002-1694-4722 https://orcid.org/0000-0002-1957-2979 https://orcid.org/0000-0003-0808-6518 https://orcid.org/0000-0003-1281-2359 https://orcid.org/0000-0003-2220-4365 |
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