As a researcher working in the photonics field, I found this Congress was extremely useful. I attended many solar energy related conferences before and I had been always struggling to understand the technique jargons in solar cell research. And I wouldn’t bother to record so many details on thin-film deposition, which are highly equipment dependent. This time I am very glad to find that the two communities, namely the solar cell and the photonics people started to talk the same language. To my mind, having the right language of communication can lead to the identification of the challenges, which has already pushed more than halfway through towards solving the problem.
Also during this conference I found lots of conventional optical instrument, for example the confocal optical microscope and near-field optical microscope has been innovatively used to characterise the light-solar cell interaction and obtain unique and localised information. This is a really positive indication that the researchers in both fields are joining their efforts to solve the problem from the very fundamental point of view. To this end, I am very optimistic about the energy future.