Aerosol flow homogenization in the spray polyphenylene vinylene thin film deposition
Two different spray deposition (SD) techniques – SD and homogenized SD (h-SD), were compared in the case of poly[2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylene vinylene] (MDMO-PPV) used as a model material. The h-SD setup includes a homogenizer (a chamber) for homogenization of the spray flow. The...
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| Veröffentlicht in: | Journal of physics. Conference series 2014-01, Vol.514 (1), p.12006-5 |
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| creator | Milenkov, V Honova, J Zhivkov, I Yordanov, R Vala, M Mladenova, D Weiter, M |
| description | Two different spray deposition (SD) techniques – SD and homogenized SD (h-SD), were compared in the case of poly[2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylene vinylene] (MDMO-PPV) used as a model material. The h-SD setup includes a homogenizer (a chamber) for homogenization of the spray flow. The homogenizer allows droplet size control and spraying at a low air pressure. Films of about thickness were prepared by SD and h-SD from a toluene solution with a concentration of 0.5 g l−1. Optical micrograph images show that using h-SD results in obtaining uniform films without a distinguishable structure. Imaging by polarized light reveals the typical discs observed often in the spray deposition experiments. The spectral dependence of the photocurrent consists of two peaks. This property makes the structures with h-SD films more attractive for a photovoltaic application since this enhances the photovoltaic conversion in a wider visible light range. The I-V characteristics measured on samples with h-SD films show that exposure to white light increases the current by two orders of magnitude. One can thus conclude that the ITO|MDMO-PPV|Al structures with h-SD MDMO-PPV films behave as a photovoltaic cell. |
| doi_str_mv | 10.1088/1742-6596/514/1/012006 |
| format | Article |
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The h-SD setup includes a homogenizer (a chamber) for homogenization of the spray flow. The homogenizer allows droplet size control and spraying at a low air pressure. Films of about thickness were prepared by SD and h-SD from a toluene solution with a concentration of 0.5 g l−1. Optical micrograph images show that using h-SD results in obtaining uniform films without a distinguishable structure. Imaging by polarized light reveals the typical discs observed often in the spray deposition experiments. The spectral dependence of the photocurrent consists of two peaks. This property makes the structures with h-SD films more attractive for a photovoltaic application since this enhances the photovoltaic conversion in a wider visible light range. The I-V characteristics measured on samples with h-SD films show that exposure to white light increases the current by two orders of magnitude. One can thus conclude that the ITO|MDMO-PPV|Al structures with h-SD MDMO-PPV films behave as a photovoltaic cell.</description><identifier>ISSN: 1742-6596</identifier><identifier>ISSN: 1742-6588</identifier><identifier>EISSN: 1742-6596</identifier><identifier>DOI: 10.1088/1742-6596/514/1/012006</identifier><language>eng</language><publisher>Bristol: IOP Publishing</publisher><subject>Current voltage characteristics ; Droplets ; Homogenization ; Homogenizing ; Photoelectric effect ; Photomicrographs ; Photovoltaic cells ; Photovoltaic conversion ; Physics ; Polarized light ; Polyphenylene vinylene ; Solar cells ; Spray deposition ; Sprayers ; Spraying ; Sprays ; Thickness ; Thin films ; Toluene ; White light</subject><ispartof>Journal of physics. Conference series, 2014-01, Vol.514 (1), p.12006-5</ispartof><rights>2014. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). 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Conference series</title><description>Two different spray deposition (SD) techniques – SD and homogenized SD (h-SD), were compared in the case of poly[2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylene vinylene] (MDMO-PPV) used as a model material. The h-SD setup includes a homogenizer (a chamber) for homogenization of the spray flow. The homogenizer allows droplet size control and spraying at a low air pressure. Films of about thickness were prepared by SD and h-SD from a toluene solution with a concentration of 0.5 g l−1. Optical micrograph images show that using h-SD results in obtaining uniform films without a distinguishable structure. Imaging by polarized light reveals the typical discs observed often in the spray deposition experiments. The spectral dependence of the photocurrent consists of two peaks. This property makes the structures with h-SD films more attractive for a photovoltaic application since this enhances the photovoltaic conversion in a wider visible light range. The I-V characteristics measured on samples with h-SD films show that exposure to white light increases the current by two orders of magnitude. One can thus conclude that the ITO|MDMO-PPV|Al structures with h-SD MDMO-PPV films behave as a photovoltaic cell.</description><subject>Current voltage characteristics</subject><subject>Droplets</subject><subject>Homogenization</subject><subject>Homogenizing</subject><subject>Photoelectric effect</subject><subject>Photomicrographs</subject><subject>Photovoltaic cells</subject><subject>Photovoltaic conversion</subject><subject>Physics</subject><subject>Polarized light</subject><subject>Polyphenylene vinylene</subject><subject>Solar cells</subject><subject>Spray deposition</subject><subject>Sprayers</subject><subject>Spraying</subject><subject>Sprays</subject><subject>Thickness</subject><subject>Thin films</subject><subject>Toluene</subject><subject>White light</subject><issn>1742-6596</issn><issn>1742-6588</issn><issn>1742-6596</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpdkEtLxDAQgIMouK7-BQl48bI2k7ZJe1wWX7DgZT2HPiY2S9rUpqvUX2_KiohzmYH55sFHyDWwO2BZFoFM-EqkuYhSSCKIGHDGxAlZ_DZO_9Tn5ML7PWNxCLkguzUOzjtLtXWftHGte8POfBWjcR01HR0bpL4fion2zk59g91ksUP6YX6KsQmUNralNfbOm3nwkpzpwnq8-slL8vpwv9s8rbYvj8-b9XZVxQDjqswByrxgAnmqsSySMmGMCyF0xkqNaVInwKpCioqjlDHnSVXWWZ6LEmuppY6X5Pa4tx_c-wH9qFrjK7S26NAdvAIJWc5TDiygN__QvTsMXfhO8VSGmzIVeaDEkaqCFD-gVv1g2mKYFDA1y1azRzV7VEG2AnWUHX8D4O1zNA</recordid><startdate>20140101</startdate><enddate>20140101</enddate><creator>Milenkov, V</creator><creator>Honova, J</creator><creator>Zhivkov, I</creator><creator>Yordanov, R</creator><creator>Vala, M</creator><creator>Mladenova, D</creator><creator>Weiter, M</creator><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>L7M</scope><scope>P5Z</scope><scope>P62</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7U5</scope><scope>8BQ</scope><scope>JG9</scope></search><sort><creationdate>20140101</creationdate><title>Aerosol flow homogenization in the spray polyphenylene vinylene thin film deposition</title><author>Milenkov, V ; 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The h-SD setup includes a homogenizer (a chamber) for homogenization of the spray flow. The homogenizer allows droplet size control and spraying at a low air pressure. Films of about thickness were prepared by SD and h-SD from a toluene solution with a concentration of 0.5 g l−1. Optical micrograph images show that using h-SD results in obtaining uniform films without a distinguishable structure. Imaging by polarized light reveals the typical discs observed often in the spray deposition experiments. The spectral dependence of the photocurrent consists of two peaks. This property makes the structures with h-SD films more attractive for a photovoltaic application since this enhances the photovoltaic conversion in a wider visible light range. The I-V characteristics measured on samples with h-SD films show that exposure to white light increases the current by two orders of magnitude. One can thus conclude that the ITO|MDMO-PPV|Al structures with h-SD MDMO-PPV films behave as a photovoltaic cell.</abstract><cop>Bristol</cop><pub>IOP Publishing</pub><doi>10.1088/1742-6596/514/1/012006</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Current voltage characteristics Droplets Homogenization Homogenizing Photoelectric effect Photomicrographs Photovoltaic cells Photovoltaic conversion Physics Polarized light Polyphenylene vinylene Solar cells Spray deposition Sprayers Spraying Sprays Thickness Thin films Toluene White light |
| title | Aerosol flow homogenization in the spray polyphenylene vinylene thin film deposition |
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