11/21(금) 나노융복합산업기술 특강은 한밭대학교 홍기하 교수님을 모시고 진행합니다.

관심있는 분들의 많은 참석 부탁드립니다.

ㅁ주제:  Tin-Based Halide Perovskites: Material Insights and Future Directions

ㅁ일시: 11/21(금) 15:00

ㅁ장소: 제2종합연구동 83188호

ㅁ약력: 

ㅁ초록:

Metal Halide Perovskites (MHPs) have attracted substantial attention across various technological applications, notably in solar cells and light-emitting devices, attributed to their intrinsic properties such as defect tolerance and facile synthesizability. Despite the myriad of advantages presented by MHPs, the toxicity and environmental impact stemming from their lead (Pb) content pose significant barriers to commercialization. A plethora of efforts, both computational and experimental, have been channeled towards identifying viable alternatives to Pb-based perovskites, albeit the certified efficiency of Pb-free variants lags notably behind their Pb counterparts. Amongst Pb-free candidates, Sn-based perovskites have emerged as the most promising candidates yet are plagued by stability issues in comparison to Pb-based solar cells.

In the pursuit of enhancing the efficiency and stability of Sn-based perovskite solar cells, various combinations of A-site cation molecules have been explored. While cesium offers superior chemical and thermal stability, Cs-based solar cells underperform relative to their molecular cation-based photovoltaic counterparts. Our research group has been ardently engaged in the theoretical investigation aimed at developing Sn-based inorganic halide perovskite solar cells having better stability and efficiency. In this presentation, a careful exploration of the unique electronic structure characteristics of tin-based halide perovskites will be presented, alongside the proposition of strategies aimed at ameliorating their apparent stability deficiencies.

This discourse aims to shed light on the intrinsic materials properties and future perspectives of tin-based halide perovskites, providing insights and elucidating the unique properties of tin-based halides, thereby paving the way for further research and development in this domain.