| 학회 |
한국재료학회 |
| 학술대회 |
2017년 봄 (05/17 ~ 05/19, 목포 현대호텔) |
| 권호 |
23권 1호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Synthesis of Nanocrystalline Ternary and Quaternary Metal Chalcogenides for Solar Energy Harvesting by Low Cost Hot Injection Technique |
| 초록 |
The tremendous progress in chalcogenide nanocrystals (NCs) has demonstrated the potential of fabricating high-performance and cost-effective photovoltaic devices due to their outstanding optical characteristics, stability at high temperature and abundant elements. Among these NCs, Cu2ZnSnS4 (CZTS) and Cu2SnS3 (CTS) are earth abundant and environmentally benign materials with a high absorption coefficient of over 104 cm-1 and afford the direct and suitable band gaps for solar energy harvesting. The current research focuses on the development of more environmental friendly and industrially compatible a polyol mediated hot injection (HI) technique, an ideal route for synthesis of semiconductor NCs. Here, we demonstrate a non-toxic and surfactant-free green synthesis of pure metastable wurtzite (WZ) CZTS and CTS NCs via a glycol (ethylene glycol (EG)) mediated HI route. Our preliminary NC-based TFSCs demonstrated a PCE of 2.44 %, for absorber annealed at 560 oC without employing toxic Se, which is the highest efficiency achieved for pure CZTS NC-based TFSCs prepared using a polyol-based HI route and the device derived from the CTS absorber annealed at 350 Torr of S vapor pressure showed the best conversion efficiency 2.7 %, which is the first notable efficiency for an CTS NCs ink-based TFSC. We believe that the current research will find a good impact on scientific community. |
| 저자 |
Uma V. Ghorpade1, Jin Hyeok Kim2
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| 소속 |
1Optoelectronics Convergence Research Center and Department of Materials Science and Engineering, 2Chonnam National Univ. |
| 키워드 |
<P>CZTS; CTS; TFSC</P>
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| E-Mail |
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