| 학회 |
한국재료학회 |
| 학술대회 |
2019년 봄 (05/15 ~ 05/17, 평창 알펜시아 리조트) |
| 권호 |
25권 1호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Effect of Polymorphic SnS Combination as Absorber Layer for Solar Cell Fabrication |
| 초록 |
Often optical devices seek nanocrystals with a lack of center of symmetry such that their properties can be varied as a function of direction/orientation. Considering this advantage, we are developing π-SnS which is a recently much focused highly metastable compound from tin sulfides group with cubic structure. Theoretical studies and very few experiments show that π-SnS possess a band gap of 1.7 eV with forbidden transitions unlike orthorhombic SnS having a direct band gap between 1.2 – 1.5 eV. As said, stabilizing the phase of tin sulfide with cubic structure is an uphill task for thin film deposition. Hence, we are approaching π-SnS deposition with various possible routes to optimize it with orthorhombic SnS in order to understand their unique and combined effect for solar cell fabrication. Absence of center of symmetry but only rotation or screw symmetry allows π-SnS to show non-linear optical properties that may expand the scope of this material beyond solar cell applications. This work emphasizes on growing π-SnS thin films on different substrates by optimizing the growth and fabricating solar cells with choices of buffer layer for a thorough understanding of materials’ properties. Also, this investigation may shed light on some interesting characteristics of cubic SnS that may be considered as a fundamental study for future works on this material. |
| 저자 |
Neerugatti Krishna Rao Eswar, Jaeyeong Heo
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| 소속 |
Chonnam National Univ. |
| 키워드 |
Cubic SnS; Orthorhombic SnS; Interfaces; thin films; Solar cell
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| E-Mail |
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