Quantum dot photoluminescence as a versatile probe to visualize the interaction between plasma and nanoparticles on a surface
We experimentally demonstrate that the interaction between plasma and nanometer-sized semiconductor quantum dots (QDs) is directly connected to a change in their photoluminescence (PL) spectrum. This is done by taking in situ, high resolution, and temporally resolved spectra of the light emitted by...
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| Veröffentlicht in: | Applied physics letters 2021-12, Vol.119 (25) |
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| container_title | Applied physics letters |
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| creator | Marvi, Z. Donders, T. J. M. Hasani, M. Klaassen, G. Beckers, J. |
| description | We experimentally demonstrate that the interaction between plasma and nanometer-sized semiconductor quantum dots (QDs) is directly connected to a change in their photoluminescence (PL) spectrum. This is done by taking in situ, high resolution, and temporally resolved spectra of the light emitted by laser-excited QDs on an electrically floating sample exposed to a low pressure argon plasma. Our results show a fast redshift of the PL emission peak indicating the quantum-confined Stark effect due to plasma-generated excess charges on the substrate and near the QD surface, while other plasma-induced (thermal and ion) effects on longer timescales could clearly be distinguished from these charging effects. The presented results and method open up pathways to direct visualization and understanding of fundamental plasma–particle interactions on nanometer length scales. |
| doi_str_mv | 10.1063/5.0067532 |
| format | Article |
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J. M. ; Hasani, M. ; Klaassen, G. ; Beckers, J.</creator><creatorcontrib>Marvi, Z. ; Donders, T. J. M. ; Hasani, M. ; Klaassen, G. ; Beckers, J.</creatorcontrib><description>We experimentally demonstrate that the interaction between plasma and nanometer-sized semiconductor quantum dots (QDs) is directly connected to a change in their photoluminescence (PL) spectrum. This is done by taking in situ, high resolution, and temporally resolved spectra of the light emitted by laser-excited QDs on an electrically floating sample exposed to a low pressure argon plasma. Our results show a fast redshift of the PL emission peak indicating the quantum-confined Stark effect due to plasma-generated excess charges on the substrate and near the QD surface, while other plasma-induced (thermal and ion) effects on longer timescales could clearly be distinguished from these charging effects. The presented results and method open up pathways to direct visualization and understanding of fundamental plasma–particle interactions on nanometer length scales.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/5.0067532</identifier><identifier>CODEN: APPLAB</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Argon plasma ; Low pressure ; Nanoparticles ; Particle interactions ; Photoluminescence ; Plasma ; Quantum dots ; Red shift ; Spectral emittance ; Stark effect ; Substrates</subject><ispartof>Applied physics letters, 2021-12, Vol.119 (25)</ispartof><rights>Author(s)</rights><rights>2021 Author(s). 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Our results show a fast redshift of the PL emission peak indicating the quantum-confined Stark effect due to plasma-generated excess charges on the substrate and near the QD surface, while other plasma-induced (thermal and ion) effects on longer timescales could clearly be distinguished from these charging effects. The presented results and method open up pathways to direct visualization and understanding of fundamental plasma–particle interactions on nanometer length scales.</description><subject>Applied physics</subject><subject>Argon plasma</subject><subject>Low pressure</subject><subject>Nanoparticles</subject><subject>Particle interactions</subject><subject>Photoluminescence</subject><subject>Plasma</subject><subject>Quantum dots</subject><subject>Red shift</subject><subject>Spectral emittance</subject><subject>Stark effect</subject><subject>Substrates</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp90E1LxDAQBuAgCq6rB_9BwJNCddI0jT2K-AWCCHou03TKRrpJTdIVBf-7XVb0IHgaBh5meF_GDgWcCijlmToFKLWS-RabCdA6k0Kcb7MZAMisrJTYZXsxvkyryqWcsc_HEV0al7z1iQ8Ln3w_Lq2jaMgZ4hg58hWFiMn2xIfgG-LJ85WNI_b2Y1oWxK1LFNAk6x1vKL0ROT70GJfI0bXcofMDhmRNT5FPBnkcQ4eG9tlOh32kg-85Z8_XV0-Xt9n9w83d5cV9ZmSZp0wb6lSDGgEFNGVrCmwlSq0LalQLhSy6smqqSoCSna5k1ekGSCFNUEIJcs6ONnenAK8jxVS_-DG46WWdlyJXBQilJnW8USb4GAN19RDsEsN7LaBet1ur-rvdyZ5sbDQ24Tr5D1758Avroe3-w38vfwGa74q1</recordid><startdate>20211220</startdate><enddate>20211220</enddate><creator>Marvi, Z.</creator><creator>Donders, T. 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Our results show a fast redshift of the PL emission peak indicating the quantum-confined Stark effect due to plasma-generated excess charges on the substrate and near the QD surface, while other plasma-induced (thermal and ion) effects on longer timescales could clearly be distinguished from these charging effects. The presented results and method open up pathways to direct visualization and understanding of fundamental plasma–particle interactions on nanometer length scales.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0067532</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0002-8219-9468</orcidid><orcidid>https://orcid.org/0000-0001-5212-955X</orcidid><orcidid>https://orcid.org/0000-0001-6116-7013</orcidid><orcidid>https://orcid.org/0000-0001-9227-353X</orcidid><orcidid>https://orcid.org/0000-0002-4671-8988</orcidid><oa>free_for_read</oa></addata></record> |
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| ispartof | Applied physics letters, 2021-12, Vol.119 (25) |
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| language | eng |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics Argon plasma Low pressure Nanoparticles Particle interactions Photoluminescence Plasma Quantum dots Red shift Spectral emittance Stark effect Substrates |
| title | Quantum dot photoluminescence as a versatile probe to visualize the interaction between plasma and nanoparticles on a surface |
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