Cesium polytungstate in sputtered solar control films. I. Microstructure and optical properties
Sputtered thin films with strong near-infrared absorption and high visible transmission and electrical resistivity (≥102 Ω cm) have been obtained using highly conductive cesium tungsten bronze targets. The origin of the low electrical conductivity and high near-infrared absorption of the films has b...
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| Veröffentlicht in: | Journal of applied physics 2021-09, Vol.130 (11) |
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| creator | Sato, Keiichi Ando, Isao Yoshio, Satoshi Adachi, Kenji |
| description | Sputtered thin films with strong near-infrared absorption and high visible transmission and electrical resistivity (≥102 Ω cm) have been obtained using highly conductive cesium tungsten bronze targets. The origin of the low electrical conductivity and high near-infrared absorption of the films has been investigated by focusing on internal defects and reported in two parts. In Paper I, the optical and electrical properties of the films and their microstructural characterization using x-ray diffraction and high-resolution transmission electron microscopy are presented. Abundant planar W and Cs defects were found on hexagonal prismatic planes that locally expanded the defect plane and triggered the hexagonal-to-orthorhombic crystallographic transition. These cationic defects diminished conduction electrons and suppressed electrical conduction, whereas oxygen vacancies generated W5+-trapped electrons to activate polaronic excitations for strong near-infrared absorption. |
| doi_str_mv | 10.1063/5.0058748 |
| format | Article |
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I. Microstructure and optical properties</title><source>AIP Journals Complete</source><source>Alma/SFX Local Collection</source><creator>Sato, Keiichi ; Ando, Isao ; Yoshio, Satoshi ; Adachi, Kenji</creator><creatorcontrib>Sato, Keiichi ; Ando, Isao ; Yoshio, Satoshi ; Adachi, Kenji</creatorcontrib><description>Sputtered thin films with strong near-infrared absorption and high visible transmission and electrical resistivity (≥102 Ω cm) have been obtained using highly conductive cesium tungsten bronze targets. The origin of the low electrical conductivity and high near-infrared absorption of the films has been investigated by focusing on internal defects and reported in two parts. In Paper I, the optical and electrical properties of the films and their microstructural characterization using x-ray diffraction and high-resolution transmission electron microscopy are presented. Abundant planar W and Cs defects were found on hexagonal prismatic planes that locally expanded the defect plane and triggered the hexagonal-to-orthorhombic crystallographic transition. These cationic defects diminished conduction electrons and suppressed electrical conduction, whereas oxygen vacancies generated W5+-trapped electrons to activate polaronic excitations for strong near-infrared absorption.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/5.0058748</identifier><identifier>CODEN: JAPIAU</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Cesium ; Conduction electrons ; Crystal defects ; Crystallography ; Electrical conduction ; Electrical properties ; Electrical resistivity ; Electrons ; High resolution electron microscopy ; Infrared absorption ; Microscopes ; Microstructure ; Near infrared radiation ; Optical properties ; Thin films ; Tungsten bronze</subject><ispartof>Journal of applied physics, 2021-09, Vol.130 (11)</ispartof><rights>Author(s)</rights><rights>2021 Author(s). 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I. Microstructure and optical properties</title><title>Journal of applied physics</title><description>Sputtered thin films with strong near-infrared absorption and high visible transmission and electrical resistivity (≥102 Ω cm) have been obtained using highly conductive cesium tungsten bronze targets. The origin of the low electrical conductivity and high near-infrared absorption of the films has been investigated by focusing on internal defects and reported in two parts. In Paper I, the optical and electrical properties of the films and their microstructural characterization using x-ray diffraction and high-resolution transmission electron microscopy are presented. Abundant planar W and Cs defects were found on hexagonal prismatic planes that locally expanded the defect plane and triggered the hexagonal-to-orthorhombic crystallographic transition. These cationic defects diminished conduction electrons and suppressed electrical conduction, whereas oxygen vacancies generated W5+-trapped electrons to activate polaronic excitations for strong near-infrared absorption.</description><subject>Applied physics</subject><subject>Cesium</subject><subject>Conduction electrons</subject><subject>Crystal defects</subject><subject>Crystallography</subject><subject>Electrical conduction</subject><subject>Electrical properties</subject><subject>Electrical resistivity</subject><subject>Electrons</subject><subject>High resolution electron microscopy</subject><subject>Infrared absorption</subject><subject>Microscopes</subject><subject>Microstructure</subject><subject>Near infrared radiation</subject><subject>Optical properties</subject><subject>Thin films</subject><subject>Tungsten bronze</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqd0EtLAzEUBeAgCtbHwn8QcKUwY27SvJZSfBQqbnQd0kxGUqaTMckI_fdOacG9q7v5uOdwELoBUgMR7IHXhHAl5-oEzYAoXUnOySmaEUKhUlrqc3SR84YQAMX0DJmFz2Hc4iF2uzL2X7nY4nHocR7GUnzyDc6xswm72JcUO9yGbptrvKzxW3Ap5pJGV8bkse0bHIcSnO3wkOLgUwk-X6Gz1nbZXx_vJfp8fvpYvFar95fl4nFVOUZlqTylwCUFQdcAdM4d4-3aUiEc95ZLDWAbD67VCoC3lIBrlBSgBVMauFDsEt0e_k7R36PPxWzimPop0lAuGRESJJ_U3UHtm-fkWzOksLVpZ4CY_X6Gm-N-k70_2OzCNEqI_f_wT0x_0AxNy34BB31-Lg</recordid><startdate>20210921</startdate><enddate>20210921</enddate><creator>Sato, Keiichi</creator><creator>Ando, Isao</creator><creator>Yoshio, Satoshi</creator><creator>Adachi, Kenji</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-7820-878X</orcidid><orcidid>https://orcid.org/0000-0003-0487-3442</orcidid></search><sort><creationdate>20210921</creationdate><title>Cesium polytungstate in sputtered solar control films. I. Microstructure and optical properties</title><author>Sato, Keiichi ; Ando, Isao ; Yoshio, Satoshi ; Adachi, Kenji</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c327t-e221572162b11245c35fba266c5ea57911ade1cf98115f201cd87619638915683</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Applied physics</topic><topic>Cesium</topic><topic>Conduction electrons</topic><topic>Crystal defects</topic><topic>Crystallography</topic><topic>Electrical conduction</topic><topic>Electrical properties</topic><topic>Electrical resistivity</topic><topic>Electrons</topic><topic>High resolution electron microscopy</topic><topic>Infrared absorption</topic><topic>Microscopes</topic><topic>Microstructure</topic><topic>Near infrared radiation</topic><topic>Optical properties</topic><topic>Thin films</topic><topic>Tungsten bronze</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sato, Keiichi</creatorcontrib><creatorcontrib>Ando, Isao</creatorcontrib><creatorcontrib>Yoshio, Satoshi</creatorcontrib><creatorcontrib>Adachi, Kenji</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sato, Keiichi</au><au>Ando, Isao</au><au>Yoshio, Satoshi</au><au>Adachi, Kenji</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cesium polytungstate in sputtered solar control films. I. Microstructure and optical properties</atitle><jtitle>Journal of applied physics</jtitle><date>2021-09-21</date><risdate>2021</risdate><volume>130</volume><issue>11</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><coden>JAPIAU</coden><abstract>Sputtered thin films with strong near-infrared absorption and high visible transmission and electrical resistivity (≥102 Ω cm) have been obtained using highly conductive cesium tungsten bronze targets. The origin of the low electrical conductivity and high near-infrared absorption of the films has been investigated by focusing on internal defects and reported in two parts. In Paper I, the optical and electrical properties of the films and their microstructural characterization using x-ray diffraction and high-resolution transmission electron microscopy are presented. Abundant planar W and Cs defects were found on hexagonal prismatic planes that locally expanded the defect plane and triggered the hexagonal-to-orthorhombic crystallographic transition. These cationic defects diminished conduction electrons and suppressed electrical conduction, whereas oxygen vacancies generated W5+-trapped electrons to activate polaronic excitations for strong near-infrared absorption.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0058748</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-7820-878X</orcidid><orcidid>https://orcid.org/0000-0003-0487-3442</orcidid></addata></record> |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics Cesium Conduction electrons Crystal defects Crystallography Electrical conduction Electrical properties Electrical resistivity Electrons High resolution electron microscopy Infrared absorption Microscopes Microstructure Near infrared radiation Optical properties Thin films Tungsten bronze |
| title | Cesium polytungstate in sputtered solar control films. I. Microstructure and optical properties |
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