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|
| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
MAT.P-514 |
| Subject |
Scalable synthesis of Sb2Se3-xSx (0 ≤ x ≤ 3) solid-solution nanofibers via a new topochemical reaction from K2Sb8Q13 and their themoelectric transport properties |
| Authors |
Hyungseok Lee, Joonil Cha, CHUNG IN*
School of Chemical and Biological Engineering, Seoul National University, Korea
|
| Abstract |
Sb2Q3 (Q = S, Se) compounds are promising for photovoltaic and thermoelectric applications. Although low-dimensional synthesis for them has been developed well, it is still challenging to synthesize their ternary solid-solution nanostructure in a large scale. In this presentation, we introduce a new scalable method to synthesize single crystalline Sb2Se3-xSx (0 ≤ x ≤ 3) nanofibers with capability of controlling compositions and tuning optical band gaps. Under a surfactant-free, facile solvothermal reaction condition, Sb2Se3-xSx nanofibers are topochemically obtained from K2Sb8Q13. This new soft chemistry method provides controllability for the diameters of Sb2Se3-xSx nanofibers by changing reaction conditions. The resulting Sb2Se3-xSx nanofibers has highly anisotropic transport properties, for example, thermal conductivity compared to their bulk counterparts. |
| E-mail |
jabezlife@snu.ac.kr |
|
121st General Meeting of the KCS