| 학회 |
한국재료학회 |
| 학술대회 |
2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 |
27권 2호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Study on fundamental properties of Pb-Sn-based halide materials for narrow band gap perovskite solar cells |
| 초록 |
Recently, A(PbxSn1-x)I3 material is being actively studied as a light absorption layer of a rear cell in tandem perovskite solar cell. In this study, we synthesized a material in which A site is mixed with FA-Ma-Cs by mechanochemical synthesis and derived a ternary phase diagram through crystal structure analysis. We determined the excellent light absorption and structurally stable (α-phase) composition Csx(FA0.6-xMA0.4)Sn0.6Pb0.4I3 (x = 0 to 1) based on their ternary phase diagram and photoluminescence intensity. We then investigate the broader effect of Cs+ on mixed Pb-Sn perovskite films using Csx(FA0.6-xMA0.4)Sn0.6Pb0.4I3 (x = 0 - 12%) as the absorber composition in inverted architecture. In addition, we studied structural and chemical stability by analyzing the amount of change in optical properties compared to the initial state when the fabricated films were kept for 1000 hours under inert atmosphere. The results of this study are expected to make a good contribution to deriving narrow bandgap perovskite materials with excellent properties and developing high-efficiency and highly stable tandem perovskite solar cells. |
| 저자 |
Sung Woong Yang1, Rajendra Kumar Gunasekaran2, Yeonghun Yun3, Ji Na Jung4, Won Chang Choi1, Chang-Lyoul Lee2, Sangwook Lee3
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| 소속 |
1School of Materials Science and Engineering, 2Kyungpook National Univ., 3Daegu 41566, 4S. Korea |
| 키워드 |
#Narrow bandgap; #Halide perovskite; #Solar cell; #Rear cell; #Sn-Pb
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| E-Mail |
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