直播|悉尼大學和澳大利亞皇家理工大學專家報告

原文地址：http://news.sciencenet.cn/htmlnews/2023/8/506035.shtm

直播時間：2023年8月4日（周五）20:00-21:30

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北京時間2023年8月4日晚八點，iCANX Talks 第155期邀請到悉尼大學的Anita W. Y. Ho-Baillie和澳大利亞皇家理工大學的Arnan Mitchell進行分享！更多精彩，敬請期待！

【直播介紹】

Anita W. Y. Ho-Baillie

The University of Sydney

Perovskite Solar Cells: Tandems and Stability

【Abstract】

Solar cell that converts solar energy to electricity is one of the cheapest electricity production technology, due to the rapid cost reduction in the last decade. The incumbent silicon solar cell technology is approaching its power conversion efficiency limit (29%), new approaches are needed to increase the efficiency for further cost reduction.Multi-junction or tandem solar cells involve the stacking of high bandgap solar cells onto low bandgap solar cells for them to work in tandem, each converting light in the “sectioned-solar-spectrum” to electricity more efficiently. Multi-junction tandem cell concept is promising in delivering higher efficiencies given the efficiency limit for double junction solar cells is ~45% and for triple-junctions, ~51%. Multi-junction tandems According to the most recent photovoltaics industry roadmap ITRPV (2023), it is projected that Si-based tandem solar cells will become part of the photovoltaic technology mix starting in 2027.Perovskite solar cell technology has the performance credentials and the ease of fabrication to be a candidate for tandem solar cells. Perovskite-based tandem cell research has attracted immense amount of interest in the last 6 years and has experienced a very rapid rate of improvement in energy conversion efficiency.In the talk, I will present our research at the University of Sydney that include demonstrations of various bandgap perovskite solar cells and various type of perovskite tandem solar cells and their applications in the wider context. I will touch on our strategies for improving their stability and durability.

將太陽能轉化為電力的太陽能電池是最便宜的電力生產技術之一，因為在過去十年中成本迅速降低。現有的硅太陽能電池技術正接近其功率轉換效率極限（29%），需要新的方法來提高效率以進一步降低成本。多結或串聯太陽能電池涉及將高帶隙太陽能電池堆疊到低帶隙太陽能細胞上，使其串聯工作，每個太陽能電池都能更有效地將“分段太陽能光譜”中的光轉換為電能。考慮到雙結太陽能電池和三結太陽能電池的效率極限分別為~45%和~51%，多結串聯電池的概念有望提供更高的效率。多結串聯根據最新的光伏產業路線圖ITRPV（2023），預計硅基串聯太陽能電池將從2027年開始成為光伏技術組合的一部分。鈣鈦礦太陽能電池技術具有性能證書和易于制造的特點，可作為串聯太陽能電池的候選技術。在過去的6年里，基于鈣鈦礦的串聯電池研究吸引了人們的極大興趣，并且在能量轉換效率方面經歷了非常快速的提高。在演講中，我將介紹我們在悉尼大學的研究，包括各種帶隙鈣鈦礦太陽能電池和各種類型的鈣鈦礦串聯太陽能電池及其在更廣泛背景下的應用。我將談談我們提高其穩定性和耐用性的戰略。

【Biography】

Anita Ho-Baillie (何穎兒) is the John Hooke Chair of Nanoscience at the University of Sydney, an Australian Research Council Future Fellow, and an Adjunct Professor at University of New South Wales (UNSW). She completed her Bachelor of Engineering degree on a Co-op scholarship in 2001 and her PhD at UNSW in 2005. Her research interest is to engineer materials and devices at nanoscale for integrating solar cells onto all kinds of surfaces generating clean energy. She is a highly cited researcher from 2019 to 2022. In 2021, she was an Australian Museum Eureka Prize Finalist and was named the Top Australian Sustainable-Energy Researcher by The Australian Newspaper Annual-Research-Magazine. She won the Royal Society of NSW Warren Prize in 2022 for her pioneering work in the development of next generation solar cells.

何穎兒是悉尼大學John Hooke納米科學主席、澳大利亞研究委員會未來研究員和新南威爾士大學（UNSW）兼職教授。她于2001年獲得合作獎學金獲得工程學士學位，并于2005年在新南威爾士大學獲得博士學位。她的研究興趣是設計納米級的材料和設備，將太陽能電池集成到產生清潔能源的各種表面上。她是2019年至2022年被高度引用的研究人員。2021年，她是澳大利亞博物館尤里卡獎的入圍者，并被《澳大利亞報紙年度研究雜志》評為澳大利亞最佳可持續能源研究員。她因在下一代太陽能電池開發方面的開創性工作，于2022年獲得新南威爾士州皇家學會沃倫獎。

Arnan Mitchell

RMIT University

Photonic Chip Frequency Combs:New Technologies for Measuring almost anything

【Abstract】

Optical frequency combs were invented more than 20 years ago and have evolutionized precision measurement. Their significance was recognized with the award of the 2005 Nobel Prize in physics, but since then have remained largely within sophisticated laboratories. Recent advances have made it possible to realize optical frequency combs in the form of micro-chips which can be manufactured cheaply, are compact and efficient. In this talk I will explain what an optical frequency comb is, how they are used for precision measurement and the coming wave of new micro-chip optical frequency combs. Systems as micro-chips. I will present an outlook for the diverse areas of application where I believe combs will have impact spanning high-speed communications, machine learning, seismology, biomedical imaging, monitoring the environment, and even searching for life on other planets.

光頻梳發明于 20 多年前，為精密測量帶來了革命性的變化，并于 2005 年獲得了諾貝爾物理學獎。但是，從那時起，光頻梳的研究就基本上停留在了精密實驗室中。最近的技術進步使得以微芯片的形式實現光學頻率梳成為可能，這種芯片的制造成本低廉、結構緊湊、效率高。在本講座中，我將解釋什么是光頻梳、它們如何用于精密測量，以及即將出現的新型光頻梳微芯片。我將展望梳狀光學系統在高速通信、機器學習、地震學、生物醫學成像、環境監測，甚至在其他星球上尋找生命等多個領域的應用前景。

【Biography】

Professor Arnan Mitchell is a Distinguished Professor in the School of Engineering at RMIT University, Director of the RMIT Micro Nano Research Facility (MNRF) and is Director of the recently Announced ARC Centre of Excellence for Optical Microcombs for Breakthrough Science (COMBS).He has published more than 700 research papers including publications in Science, Nature, Nature Medicine and Nature Photonics among many others. He is a senior member of the IEEE, SPIE and is a Fellow of Optica. He is a highly multidisciplinary researcher working in micro-chip technologies combining light, sound, fluids and electronics with applications spanning radar systems for defense, high speed fiber optic communications and point of care diagnostic systems for biomedicine. He is enthusiastic about translating technology into the hands of end-users and has dedicated much of his career to building and training diverse teams and comprehensive micro and nanotechnology infrastructure to enable breakthrough discoveries to achieve real world impact.