Thermal Oxidation Preparation of Doped Hematite Thin Films for Photoelectrochemical Water Splitting
Sn- or Ge-doped hematite thin films were fabricated by annealing alloyed films for the purpose of photoelectrochemical (PEC) water splitting. The alloyed films were deposited on FTO glass by magnetron sputtering and their compositions were controlled by the target. The morphology, crystalline struct...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2014/794370 |
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| _version_ | 1832554189577781248 |
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| author | Song Li Jiajia Cai Yudong Mei Yuping Ren Gaowu Qin |
| author_facet | Song Li Jiajia Cai Yudong Mei Yuping Ren Gaowu Qin |
| author_sort | Song Li |
| collection | DOAJ |
| description | Sn- or Ge-doped hematite thin films were fabricated by annealing alloyed films for the purpose of photoelectrochemical (PEC) water splitting. The alloyed films were deposited on FTO glass by magnetron sputtering and their compositions were controlled by the target. The morphology, crystalline structure, optical properties, and photocatalytic activities have been investigated. The SEM observation showed that uniform, large area arrays of nanoflakes formed after thermal oxidation. The incorporation of doping elements into the hematite structure was confirmed by XRD. The photocurrent density-voltage characterization illustrated that the nanoflake films of Sn-doped hematite exhibited high PEC performance and the Sn concentration was optimized about 5%. The doped Ge4+ ions were proposed to occupy the empty octahedral holes and their effect on PEC performance of hematite is smaller than that of tin ions. |
| format | Article |
| id | doaj-art-ed1ebaba97c1414496cdd4ee80f143da |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-ed1ebaba97c1414496cdd4ee80f143da2025-02-03T05:52:15ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2014-01-01201410.1155/2014/794370794370Thermal Oxidation Preparation of Doped Hematite Thin Films for Photoelectrochemical Water SplittingSong Li0Jiajia Cai1Yudong Mei2Yuping Ren3Gaowu Qin4Key Laboratory for Anisotropy and Texture of Materials (MoE), Northeastern University, Shenyang 110819, ChinaKey Laboratory for Anisotropy and Texture of Materials (MoE), Northeastern University, Shenyang 110819, ChinaKey Laboratory for Anisotropy and Texture of Materials (MoE), Northeastern University, Shenyang 110819, ChinaKey Laboratory for Anisotropy and Texture of Materials (MoE), Northeastern University, Shenyang 110819, ChinaKey Laboratory for Anisotropy and Texture of Materials (MoE), Northeastern University, Shenyang 110819, ChinaSn- or Ge-doped hematite thin films were fabricated by annealing alloyed films for the purpose of photoelectrochemical (PEC) water splitting. The alloyed films were deposited on FTO glass by magnetron sputtering and their compositions were controlled by the target. The morphology, crystalline structure, optical properties, and photocatalytic activities have been investigated. The SEM observation showed that uniform, large area arrays of nanoflakes formed after thermal oxidation. The incorporation of doping elements into the hematite structure was confirmed by XRD. The photocurrent density-voltage characterization illustrated that the nanoflake films of Sn-doped hematite exhibited high PEC performance and the Sn concentration was optimized about 5%. The doped Ge4+ ions were proposed to occupy the empty octahedral holes and their effect on PEC performance of hematite is smaller than that of tin ions.http://dx.doi.org/10.1155/2014/794370 |
| spellingShingle | Song Li Jiajia Cai Yudong Mei Yuping Ren Gaowu Qin Thermal Oxidation Preparation of Doped Hematite Thin Films for Photoelectrochemical Water Splitting International Journal of Photoenergy |
| title | Thermal Oxidation Preparation of Doped Hematite Thin Films for Photoelectrochemical Water Splitting |
| title_full | Thermal Oxidation Preparation of Doped Hematite Thin Films for Photoelectrochemical Water Splitting |
| title_fullStr | Thermal Oxidation Preparation of Doped Hematite Thin Films for Photoelectrochemical Water Splitting |
| title_full_unstemmed | Thermal Oxidation Preparation of Doped Hematite Thin Films for Photoelectrochemical Water Splitting |
| title_short | Thermal Oxidation Preparation of Doped Hematite Thin Films for Photoelectrochemical Water Splitting |
| title_sort | thermal oxidation preparation of doped hematite thin films for photoelectrochemical water splitting |
| url | http://dx.doi.org/10.1155/2014/794370 |
| work_keys_str_mv | AT songli thermaloxidationpreparationofdopedhematitethinfilmsforphotoelectrochemicalwatersplitting AT jiajiacai thermaloxidationpreparationofdopedhematitethinfilmsforphotoelectrochemicalwatersplitting AT yudongmei thermaloxidationpreparationofdopedhematitethinfilmsforphotoelectrochemicalwatersplitting AT yupingren thermaloxidationpreparationofdopedhematitethinfilmsforphotoelectrochemicalwatersplitting AT gaowuqin thermaloxidationpreparationofdopedhematitethinfilmsforphotoelectrochemicalwatersplitting |