最新消息

RISE young star Prof. Guang YANG and his team published research in Nature Sustainability

We are pleased to announce that our RISE young star Prof. Guang YANG, Member Assistant Professor of the Department of Electrical and Electronic Engineering (EEE), collaborating with Prof. Jinsong HUANG's team at the University of North Carolina at Chapel Hill, published groundbreaking research titled "Reductive cation for scalable wide-bandgap perovskite solar cells in ambient air" in Nature Sustainability. The team innovatively incorporated a reductive methylhydrazinium cation (Mhy+) into wide-bandgap perovskite materials, enabling scalable fabrication of solar cells in ambient conditions. Key highlights: Material Improvement: Mhy+ significantly reduces defect density while suppressing iodide oxidation and halide demixing, leading to enhanced efficiency and stable production of wide-bandgap solar cells in ambient air conditions. Performance Breakthrough: Achieved 23.3% power conversion efficiency (PCE), 1.28 V open-circuit voltage, and just 0.37 V voltage loss, setting new records. Successfully fabricated 25 cm² mini-modules with 19.8% efficiency. Stability Enhancement: Under accelerated aging conditions at 55±5°C, the mini-modules maintained 94% of their initial efficiency after 700 hours of light soaking, demonstrating exceptional long-term stability. This research not only addresses the technical challenges of scalable fabrication but also provides a viable pathway for the sustainable use of solar energy, paving the way for future innovations in the field. Read the full paper: https://www.nature.com/articles/s41893-025-01529-5    

倪萌教授於港台電視節目探討氫能發展

潘樂陶慈善基金智慧能源研究院管理委員會成員、建設及環境學院副院長（研究）兼能源科學及技術講座教授倪萌教授，近日接受香港電台電視節目《鏗鏘集》專訪，分享其對氫能的專業見解。   倪教授闡述了灰氫、藍氫和綠氫的好處與限制，強調三者在推動全球邁向可持續能源系統轉型中的重要角色。他亦指出，可再生電力的生產和電力需求在很多時候和季節是不匹配的，導致電力的生產高於需求，因而造成再生能源浪費，如果能夠利用過剩的再生能源產生氫氣，這不但可以避免能源浪費，還能真正實現零碳排放的綠氫, 從而有助實現碳中和和可持續發展。   香港電台 - https://polyu.me/4hcfKKX (06:39 - 08:53; 15:05 - 16:23)

王盛衛教授合著白皮書　探討應用智慧技術提升建築能源彈性

潘樂陶慈善基金智慧能源研究院院長王盛衛教授與皇家墨爾本理工大學工程學院副教授Lasantha MEEGAHAPOLA教授，近日發表了一份題為《透過智慧建築負荷彈性，為電網提供需量反應服務》的白皮書。 該份白皮書為「PolyU–RMIT FutureLab」聯合實驗室的研究項目成果，文件探討了透過智慧建築負荷彈性以提供需量反應服務。研究項目「由智慧建築和建築微電網提供的先進電網支援服務」，透過負荷彈性測試、建築數據分析和開發機器學習模型，以辨識智慧建築和建築微電網中的負荷彈性，從而有助提供電網支援服務。 「需量反應」是一種電力平衡方法，鼓勵用戶根據電力價格信號調整其能源使用。數字化以及通信技術、人工智慧和機器學習方面的發展進一步提升了建築物提供需量反應的潛力。 該份白皮書從電力調整方向、容量、可用性、可預測性和反應時間角度，剖析了建築能源彈性。團隊亦分析了澳洲、中國和香港的輔助服務框架，並通過研究這三地的監管和政策環境及在產業和研究方面提出相關公共問題作總結。總括而言，電動車、人工智慧、智慧能源轉換和數位化的進步造就了龐大機遇，有助透過智慧建築負荷彈性，為電網提供需量反應服務。有效的規管、政策和市場機制對於釋放建築荷載彈性至關重要。 閱讀全文：https://zenodo.org/records/14571315（只供英文）      

呂琳教授將環保輻射製冷塗層與光伏板結合　推動建築物節能 (只有英文版本)

We are delighted to share with you that Prof. Lin Lu Vivien lead investigator of RISE and her research team, was interviewed by Sing Tao on 21 Jan 2025, regarding to integrate the solar-driven adaptive radiative cooling (SARC) coating they developed, with bifacial solar photovoltaics (PV) to achieve synergistic enhancement in thermal management and power generation, transforming buildings from energy consumers into energy harvesters, with the support of the PolyU Carbon Neutrality Funding Scheme. This Scheme aims to support the application of university research outcomes and to take the campus as a testbed to apply research solutions, with a goal of achieving carbon neutrality on campus and supporting Hong Kong’s goal of reaching carbon neutrality by 2050. The team is planning to install bifacial PV panels on the rooftops of the under-construction PolyU Kowloon Tong Student Hostel, with new coating applied on the corresponding area under the panels, to enhance power generation while radiatively cooling the buildings.   The carbon dots (CDs)-driven photoluminescent radiative cooling nanocoating can be applied to building rooftops and exterior walls. This novel coating can automatically adjust its absorption and emission of solar and thermal radiation in response to changes in environmental temperature or light conditions, helping to mitigate the heat island effect caused by building materials. It uses photoluminescence technology to convert ultraviolet light into visible light, thereby improving the absorption and utilisation of light by PV and increasing its conversion efficiency.   Compared to traditional coatings, this novel coating can effectively improve effective daytime solar reflectance from 92.5% to 95%, increase the cooling effect by 10% to 20%, and reduce the temperature by up to 25°C when applied to concrete rooftops. This nanocoating is environmentally friendly, water-soluble, volatile organic compounds (VOCs)-free, and can be produced in various colours, thus demonstrating significant application potential.   Press Release: https://www.polyu.edu.hk/media/media-releases/2024/0924_polyu-researchers-unveil-novel-carbon-dots-driven-green-radiative-cooling-coating/ Online coverage: Sing Tao Headline - https://polyu.me/4hofXLG (Chinese only)        

卜思齊教授開發實時評估方法　以解決電力系統的多重穩定性問題

潘樂陶慈善基金智慧能源研究院成員、理大電機及電子工程學系副系主任兼副教授卜思齊教授及其團隊，近日在期刊《IEEE Transactions on Power Systems》上發表論文，題為《用於電力系統的實時多重穩定性風險評估及可視化方法：基於圖神經網絡的方法》（Real-time Multi-stability Risk Assessment and Visualization of Power Systems: A Graph Neural Network-based Method）。   論文提出了一種基於圖神經網絡（GNN）模型的實時多重穩定性風險評估（MSRA）方法，能有效應對新能源電力系統在多方面的穩定性問題，包括轉子角度（小擾動和暫態）、電壓（短期和長期）、頻率和變流器驅動的穩定性。團隊採用了GraphNorm方法來解決GNN算法模型面臨的過度平滑問題及並提高其泛化性。團隊所提出的方法可根據實時數據同時且連續地預測多種的穩定性風險，並可對穩定和不穩定的操作區域（SUR）進行可視化，以alpha形狀呈現出來。此方法的有效性已於IEEE 39節點電力系統、西部電力協調委員會（WECC）179節點電力系統和英國（GB）國家電網通過驗證。   閱讀全文：https://ieeexplore.ieee.org/document/10819251/metrics#metrics（只供英文）

First International Conference on Digital Intelligence for Energy Systems was successfully held on 5-8 January 2025

We are delighted to share with you that the First International Conference on Digital Intelligence for Energy Systems was successfully held on 5-8 January 2025! It is our honour to have Ir Dr Otto Poon Lok To BBS, OBE to join our ceremony. We would like to thank you Ir Professor Christopher Chao, our Vice President (Research and Innovation) and Ir Kwok-ying Poon Raymond JP, Director of Electrical and Mechanical Services Department (EMSD) to deliver the welcome speech and the opening speech. In the Conference, around 200 speakers and participants from different countries, such as Denmark, United Kingdom, Australia, Singapore, Mainland China etc. were invited to share their valuable insights and innovative ideas towards Smart Energy. Besides, different experts from academic, industry and government were invited as panellists in the below three sessions, which greatly boost up the discussion atmosphere for discussion! Debate between “promoters” and “challengers” in energy field Dialogue between power generation, distribution and consumers Dialogue between scientists, professionals and policy makers Participants joined different parallel workshops and sessions in these days happily and actively! Furthermore, we had a Best Paper Award Presentation during the closing ceremony. Five best papers are selected. At the end of the closing ceremony, Professor Kashem Muttaqi, announced an existing news which is the 2nd international Conference will be held in Australia two year later! Undoubtedly, this Conference build up a large platform, bringing different international experts, students and colleagues to exchange the knowledge and technologies on smart and sustainable energy from power generation, distribution and demand sides. It is a milestone for us to organise more research events to gather all the experts in energy field in the future! Thank you so much for all the participants to join our Conference!   More Detail: Conference website: https://events.polyu.edu.hk/rise_digital_intelligence/home PAIR 抖音 channel: 理大高等研究院PAIR的抖音 - 抖音 香港理大建築能源與自動化研究室WeChat: https://mp.weixin.qq.com/s/ZB5510O9tDwfokooLj9xsg     

RISE Research: Organic solar cell breakthrough from Prof. Gang LI’s team

Prof. Gang Li’s research team published a paper “19.5% Inverted Organic Photovoltaic with Record Long-lifetime via Multifunctional Interface Engineering featuring Radical Scavenger” on Nature Communications on 04 December 2024, which reported breakthrough in both efficiency and lifetime of organic solar cells.  Advances in improving the operational lifetime of highly efficient organic photovoltaic (OPV) and understanding photo-degradation mechanisms in molecular level are currently limited, especially on the promising inverted OPV, posing critical challenges to commercialization. Here, the authors report a radical scavenger capped zinc oxide nanoparticles as the electron transport layer, achieving operationally stable devices with efficiency of 19.47%. Dr. Huang Jiaming is the first author. Dr. Jiehao Fu is equal contribution author.  The paper is available at https://www.nature.com/articles/s41467-024-54923-6  

Prof. CHAI Yang elected as IEEE Fellow

Professor Yang CHAI, our RISE member has been elected to the Institute of Electrical and Electronic Engineers (IEEE) Fellow Class of 2025 for his contributions to bioinspired in-sensor computing.  Headquartered in the United States, IEEE is the world’s largest technical professional organisation dedicated to advancing technology for the benefit of humanity. The IEEE Fellow grade recognises unusual distinction in the profession and is awarded to persons with outstanding record of accomplishments in any of the IEEE fields of interest.  Congratulations to Professor Chai!  Online coverage: The Paper - https://polyu.me/3ZJRtXf NetEase - https://polyu.me/41lYdeY Sina - https://polyu.me/3ZKXrXW Sohu - https://polyu.me/4f4aub7 qq - https://polyu.me/3OHl90P  

Prof. Raymond WONG discusses enhancing organic solar cells for carbon reduction on RTHK Programme Infinite Future

Prof. Raymond WONG Wai-yeung, Executive Committee Member of the Research Institute for Sustainable Urban Development (RISUD), Associate Director of the Otto Poon Charitable Foundation Research Institute for Smart Energy (RISE), Member of the Research Institute for Intelligent Wearable Systems (RI-IWEAR) and the Research Institute for Sports Science and Technology (RISports), and Dean of the Faculty of Science, was featured in the RTHK programme Infinite Future, sharing how enhancing the photovoltaic (PV) efficiency of organic solar cells can help reduce carbon emissions. Prof. Wong’s current research focus is on the design and preparation of novel high-performance photofunctional materials, and optoelectronic applications, particularly the luminescence and stability of these materials. His team has developed high-performance organic light-emitting diodes (OLEDs) with various colour emissions. Through molecular design, the team has developed a type of novel high-performance deep‐blue thermally activated delayed fluorescence (TADF) materials. OLEDs made with this deep-blue material have achieved an external quantum efficiency of over 35%, which is one of the highest in the world. The team has also achieved a PV conversion efficiency of over 19% in organic solar cells using transition metal complexes. The ultra-thin and highly flexible characteristics of organic solar cells can be integrated with wearable electronic devices, enabling these wearable electronics to be self-powered using sunlight. Prof. Wong also mentioned that the future research directions for these two types of optoelectronic devices are mainly further improving energy conversion efficiency through the molecular design of high-performance active materials and the structural design of devices; enhancing their stability and lifespan; and developing organic semiconductor electronic technologies and applications. He believes that achieving low-toxicity or non-toxic active materials in the future can help reduce environmental pollution and achieve sustainable development.   Online coverage: RTHK - https://polyu.me/3Z2YSza (Chinese only)

8位智慧能源研究院學者獲嘉譽為「2024年度全球最廣獲徵引研究人員」（只有英文版本）

We are delighted to announce that 8 RISE members are recognized as highly cited researchers 2024 by Clarivate Analytics! It shows significant contributions of our RISE members and their efforts in different research fields. We highly appreciate the efforts of our RISE members and wish them even greater success in their academic career, to brings more impactful research achievements and innovative deliverables to local, nations and the world.  In this year, there are 6,636 highly citied researchers. Their papers rank in the top 1 % by citations for a field or fields and publication year in the Web of Science. Totally, sixteen PolyU academics are recognised amongst world’s most highly cited researchers. Congratulations to our highly cited researchers!   RISE highly cited researchers in 2024     Name (by alphabetical order of surname) Category Prof. Yang CHAI (AP) Cross-Field Prof. Haitao HUANG (AP) Cross-Field Prof. Gang LI (EEE) Cross-Field Prof. Tao WU Tom (AP) Cross-Field Prof. Feng YAN (AP) Cross-Field Prof. Xiao ZHANG (ME) Cross-Field Prof. Jinyue YAN Jerry (BEEE) Engineering Prof. Bolong HUANG (ABCT) Chemistry   PolyU Press: https://www.polyu.edu.hk/media/media-releases/2024/1202_sixteen-polyu-academics-recognised-amongst-most-highly-cited-researchers/ Reference: https://clarivate.com/highly-cited-researchers/