| Project/Area Number |
15H03850
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Energy-related chemistry
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| Research Institution | Konan University (2016-2017)
Osaka University (2015) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
原田 隆史 大阪大学, 太陽エネルギー化学研究センター, 技術専門職員 (00379314)
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| Co-Investigator(Renkei-kenkyūsha) |
NOSE Yoshitaro 京都大学, 工学研究科, 准教授 (00375106)
MINEMOTO Takashi 立命館大学, 理工学部, 教授 (80373091)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Fiscal Year 2015: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
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| Keywords | 化合物半導体 / バルク結晶 / 不定比性 / 単結晶 / 光機能性材料 / 太陽エネルギー変換 / 銅（銀）アンチモン硫化物 / バルク物性制御 / 光機能材料 / 太陽電池 / 半導体光電極 / 不定比性制御 / 光電気化学エネルギー変換 / 平衡組成 / 銅アンチモン硫化物 |
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| Outline of Final Research Achievements |
Copper antimony disulfide (CuSbS2) is a promising candidate for solar absorber materials in view of its high photoabsorption property and earth-abundant constituent elements. In this study, we fabricated CuSbS2 crystals with various non-stoichiometric compositions and investigated their optical and electric properties for its applications in photovoltaics. Band gap energies of CuSbS2 crystals thus-obtained were almost constant irrespective to their compositions. Hall-resistivity measurements showed that the CuSbS2 crystal with the compositional formula close to the stoichiometric composition (Cu/Sb/S = 1.03/1.00/1.86) showed the best properties among the samples prepared in this study. We also successfully obtained a CuSbS2 single crystal by using a zone melting method. The electrical properties and thermal conductivity of the thus-obtained single crystal suggested its applicability for photofunctional and thermoelectric systems.
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