Jockey Club Museum of Climate Change - 賽馬會氣候變化博物館

At CUHK, we use Grazing-Incidence X-ray Scattering (GIXS) to investigate the crystallization processes of perovskite and organic semiconductor materials. The technique enables the optimization of material design and processing conditions, contributing to the development of high-efficiency, low-cost clean energy technologies.

中大團隊利用原位X光散射技術(GIXS)，深入觀察鈣鈦礦及有機半導體的結晶過程，從而優化材料設計及製造條件，推動高效率、低成本潔淨能源技術的發展。

Perovskite Solar Cells

• Perovskites are crystalline materials with the chemical formula ABX₃, characterized by strong light absorption, efficient charge transport, and high defect tolerance.
• Perovskite solar cells (PSCs) have achieved remarkable improvements in power conversion efficiency and can be manufactured using low-temperature coating or printing processes, enabling cost-effective and scalable production.

鈣鈦礦太陽能電池

• 鈣鈦礦是一類具有 ABX₃ 晶體結構的材料，具備強吸光能力及高效的電荷傳輸特性，並能容忍一定程度的材料缺陷（如雜質）。
• 鈣鈦礦太陽能電池的能量轉換效率近年顯著提升，並可利用低溫塗佈或印刷技術製造，具備成本效益及大規模生產潛力。

Organic Solar Cells

• Organic solar cells use organic semiconducting materials to absorb light. For example, Y6 (shown here) is a high-performance organic acceptor material.
• Organic solar cells are lightweight, flexible and semi-transparent. Similar to perovskite solar cells, they can be fabricated from solution at low temperatures using coating or printing techniques. This enables cost-effective, scalable manufacturing and supports a wide range of applications.

有機太陽能電池

• 有機太陽能電池利用有機半導體材料吸收光能。例如，這裡展示的Y6 分子是一種高效能的有機受體材料。
• 有機太陽能電池兼具輕巧、柔韌及半透明特性。與鈣鈦礦太陽能電池相似，可透過低溫溶液過程，採用塗佈或印刷技術製造。此製程具成本效益，並有利於大規模生產，應用範圍廣泛。

Silicon-Perovskite Tandem Solar Modules

• Two light-absorbing layers are stacked to capture a broader range of the solar spectrum. The perovskite top cell absorbs high-energy photons, and the silicon bottom cell absorbs low-energy photons. The complementary light absorption enhances solar energy utilization and leads to higher power conversion efficiency.

矽─鈣鈦礦疊層太陽能模組

• 透過堆疊兩層吸光材料，以擴大太陽光譜的利用範圍。上層鈣鈦礦電池吸收高能量光子，下層矽電池吸收低能量光子。兩者的互補吸光特性可提升太陽能利用率及能量轉換效率。

Indoor Solar Panels

• Generate electricity from indoor lighting and ambient light to power Internet of Things (IoT) devices, such as temperature sensors.
• Perovskite and organic solar cells can be tailored to match indoor light spectra and maintain high efficiency under low-light conditions, enabling self-powered operation of small electronic systems.

室內光伏板

• 利用室內照明及周遭光源發電，為溫度感應器等聯網裝置供電。
• 鈣鈦礦及有機太陽能電池可調校至與室內光譜配合，即使在低照度環境下仍能維持高效率發電，讓小型電子系統實現自供電運作。

Hydrogen Gas Detector

• Rapid and accurate leak detection is essential for the safe operation of hydrogen storage vessels and fuel cells.
• At CUHK, we have developed the world's fastest and most sensitive hydrogen gas sensors, enabling real-time leak detection and identification.

氫氣傳感器

• 能夠快速、準確地偵測氫氣洩漏，是確保儲氫容器及氫燃料電池安全運作的重要設備。
• 中大團隊研發出全球最快、靈敏度最高的氫氣感測器，可即時偵測及識別氫氣洩漏。

Hydrogen energy

• Hydrogen gas is an ideal energy carrier for storing the surplus energy produced by solar, wind and hydropower sources.
• Green hydrogen is produced through water hydrolysis powered by renewable energy sources.

氫氣

• 氫氣是一種理想的能源載體，可儲存太陽能、風力及水力發電所產生的剩餘能源。
• 綠氫透過可再生能源電解水製成，生產過程低碳，甚至可實現零碳排放。

Surface-enhanced Raman Scattering (SERS) Chips

• The metallic chip-scale surface in hydrogen gas detector amplifies the weak Raman scattering signals of hydrogen molecules for highly sensitive detection.

表面增強拉曼散射晶片

• 氫氣傳感器的金屬晶片可增強氫分子的微弱拉曼散射訊號，達至高靈敏度檢測。

Solid metal hydride carriers

• Hydrogen exists in the form of metallides and is non corrosive when stored for a long time.

固態氫瓶

• 將氫氣組合成金屬氫化物，達至安全、穩定的長期儲存效果，具有不易腐蝕的特性。