| 학회 |
한국재료학회 |
| 학술대회 |
2011년 봄 (05/26 ~ 05/27, 제주 휘닉스 아일랜드) |
| 권호 |
17권 1호 |
| 발표분야 |
C. Energy and the Environment Technology(에너지 및 환경재료) |
| 제목 |
Synthesis and characterization of Cu(In,Ga)Se2 absorber thin films by annealing of electrodeposited precursor and its application for thin film solar cells |
| 초록 |
Cu(In,Ga)Se2 (CIGS) absorber thin films have been prepared by annealing of electrodeposited precursor thin films in Ar atmosphere at 550 ºC for 1 h. CIGS precursor thin films were deposited on Mo coated glass substrates by electrodeposition at room temperature with different concentration of selenium (Se) acid (H2SeO3) from 6 to 30 mM. The electrolytic bath used contains copper (II) chloride (CuCl2), indium (III) chloride (InCl3), gallium (III) nitrate hydrate (Ga(NO3)3•xH2O), selenium acid (H2SeO3), lithium chloride (LiCl), and C8H5KO4. The pH of electrolytic bath solution was adjusted to 2.3 by adding diluted HCl. Effect of Se concentration on the structural, morphological, compositional, optical and electrical properties of CIGS thin films were investigated using by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and energy dispersive spectroscopy (EDS), respectively. As-deposited CIGS thin films were grown as an amorphous phase. However, the after-annealed CIGS thin films were grown as a polycrystalline chalcopyrite structure regardless of Se concentration. The presence of Ga atomic ratio of CIGS thin films increased with increasing Se concentrations. Optical band gap energy of CIGS thin film at Se concentration of 24 mL was about 1.1 eV. The CIGS thin film solar cells were fabricated the multi-stacked structure of Al/Al doped ZnO/i-ZnO/CdS/CIGS/Mo/SLG. More detail discussion will be present in poster. |
| 저자 |
Seung hyoun Lee1, K.V. Gurav2, Seung Wook Shin3, Jeong Yong Lee2, Seung-Yup Lee4, Kyung-Am Kim5, Jong Ha Moon4, Jin Hyeok Kim5
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| 소속 |
11Department of Material Science and Engineering, 2Chonnam National Univ., 3Department of Material Science and Engineering, 4Department of Materials Science Engineering, 5KAIST |
| 키워드 |
Electrodeposition; CuInGaSe2 (CIGS) absorber; thin film; Se concentration; thin film solar cells
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| E-Mail |
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