New directions in Transparent Conducting Oxides

tco是现代设备的重要组成部分；它们易于导电，但在可见光谱中保持透明度的能力使它们在光电研究中无处不在。值得注意的技术例子包括手机上的触摸屏显示器和太阳能电池设备上的电极。工业标准材料是氧化铟锡，这也是20世纪90年代末发现的第一个TCO材料。许多研究和开发已经在这种材料上进行了大量的研究和开发，以提高其性能，有证据表明这种材料正在接近最佳导电性。如果我们要进一步发展，就需要新材料。我们的团队专注于晶体生长和新型TCO材料的表征。我们的方法是用其他过渡后金属离子，特别是锑和碲，来取代昂贵而稀缺的铟。由于过渡金属离子的挥发性和不稳定性，这些材料的单晶非常罕见，难以生长。我们开发了一种利用化学蒸汽传输技术合成这些化合物晶体的新方法。该项目将追求晶体生长和新的TCO化合物的特性。采用电阻率、霍尔效应、光吸收光谱、光电子能谱等多种表征方法探测其性质。

TCOs are a crucial component in modern devices; their ability to conduct charge easily but maintain transparency in the visible spectrum make them ubiquitous in optoelectronic research. Notable examples of tech include touch screen displays on mobile phones and electrodes in solar cell devices. The industry standard material is indium tin oxide, which was also the first TCO material to be discovered in the late 1990s. Much research and development has been lavished on this material to improve its performance and there is evidence that this material is approaching optimal conductivity. If we want to develop further, new materials are required. Our group specialises in crystal growth and characterisation of new TCO materials. Our approach is to switch out indium, which is expensive and scarce, with other post-transition metal ions, notably antimony and telurium. Single crystals of these materials are very rare as they are incredibly difficult to grow due to the volatility and instability of the transition metal ion. We have developed a new method of synthesizing crystals of these compounds using a chemical vapour transport technique. This project will pursue crystal growth and characterisation of new TCO compounds. Multiple characterisation methods including resistivity, Hall effect, optical absorption spectroscopy and photoelectron spectroscopy to probe the properties.