| Project/Area Number |
23651080
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental technology/Environmental materials
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| Research Institution | Kagawa National College of Technology |
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Principal Investigator |
MORIMUNE Taichiro 香川高等専門学校, 電子システム工学科, 講師 (30455167)
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| Co-Investigator(Kenkyū-buntansha) |
TSUJI Norihide 香川高等専門学校, 電子システム工学科, 教授 (40099875)
TANAKA Kunihiko 長岡技術科学大学, 工学部, 准教授 (30334692)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2013: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | CZTS / 界面層 / 環境調和 / C60 / 無毒化 / 有機界面層 / 有機界面 / 太陽電池 |
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| Research Abstract |
Cu2ZnSnS4 (CZTS) is a semiconductor material consisting of abundant and therefore low-cost non-toxic elements. These solar cells were typically fabricated using chemically deposited cadmium sulfide (CdS) buffer layers. However the use of cadmium is undesirable from the viewpoint of environmental safety. In this work, we studied on the effect of a wide variety of organic buffer layer materials on the solar cell performance and present the results for CZTS solar cells with optimized buffer layer. As a result, fullerren-C60 buffer demonstrated the highest CZTS solar cell efficiencies.
The p-type CZTS absorber layers were deposited by sol-gel sulfurization onto Mo-coated soda lime glass (SLG). C60 buffer layer were deposited by vacuum deposition. ZnO: Al window layers were deposited by sol-gel solution method. The thicknesses of the C60 layer was varied. The highest power conversion efficiency 0.47 % was obtained the thickness of C60 buffer layer of 5 nm.
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