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Metal halide perovskites: a frontier material for photovoltaics and advanced semiconductor technologies.
Add to Calendar 2020-10-22T19:45:00 2020-10-22T20:45:00 UTC Metal halide perovskites: a frontier material for photovoltaics and advanced semiconductor technologies. Zoom link: https://psu.zoom.us/j/91021318631?pwd=MXQrNXZCc3JJMmhuVUt6OTFPaHFJZz09
Start DateThu, Oct 22, 2020
3:45 PM
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End DateThu, Oct 22, 2020
4:45 PM
Presented By
Joseph Berry, National Renewable Energy Laboratory
Event Series: Physics Colloquium

Metal halide perovskites, particularly the organic-inorganic hybrids are attracting enormous interest as novel semiconductors with excellent performance as photovoltaic devices. The materials have a number of interesting physical properties that are distinct from traditional inorganic or organic semiconductors. These properties have led to metal halide perovskites showing outstanding performance as photovoltaics, surpassing power conversion efficiency of over 25% for lab cells and in excess of 18% for large area devices. This talk will highlight the latest work at NREL to develop a fundamental understanding of the critical roadblocks to implementing metal halide perovskites in next generation photovoltaic applications, including their stability, solar cell performance, device architectures, and operational dynamics. We will also discuss applications beyond photovoltaics in emerging semiconductor technologies.

1. “Tailored interfaces of unencapsulated perovskite solar cells for> 1,000 hour operational stability,” J. A. Christians, et al., Nature Energy 3, 68-74 (2018).

2. “Efficient, stable silicon tandem cells enabled by anion-engineered wide-bandgap perovskites,” D Kim, et al., Science 368, 155-160 (2020).

3. “Triple-halide wide–band gap perovskites with suppressed phase segregation for efficient tandems,” J Xu, et al., Science 367, 1097-1104 (2020).

4. “On-device lead sequestration for perovskite solar cells,” X Li, F Zhang, H He, JJ Berry, K Zhu, T Xu, Nature 578, 555-558 (2020).