Trung tâm Nano và Năng lượng và Khoa Vật lý trân trọng kính mời quý vị đến dự Seminar thứ 6 tuần này với lịch như sau:
Ngày: 16/11/2018 (Thứ 6)
Giờ: từ 10 giờ 00 sáng đến 11 giờ 00 sáng
Địa điểm: Phòng 408F, nhà T1, Đại học Khoa học Tự nhiên, 334Nguyễn Trãi
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Speaker: Prof. LE SI DANG (Institut Néel CNRS, France)
Title: Halide perovskites: Another class of
“miracle” materials for optoelectronics?
Abstract: Trihalide perovskites have made impressive progress
in photovoltaic conversion efficiency during the last ten years to be nowadays
in the forefront of leading research solar cells [1]. Interestingly, this class
of solution-processed materials also exhibits a remarkable combination of
physical properties much sought after in optoelectronics [2], i.e. band gap
tunability, strong absorption, high photoluminescence quantum yield, etc.
In the first part of the seminar, mostly aimed at graduate and PhD students, we examine the main physical properties of halide perovskites that are of great interest for high performance solar cells. Then we review some remarkable optical properties reported recently in low dimensional perovskite nanostructures (see Figure 1 in the attached file). Finally, we emphasize the main practical issues to be addressed for the development of promising light emitting devices.
References:
[1]. Present status and future prospects of perovskite photovoltaics, H. Snaith, Nature Materials 17, 372 (2018).[2]. Properties and potential optoelectronic applications of lead halide perovskite nanocrystals, M. Kovalenko et al., Science 358, 745 (2017).
