Welcome to this coursera course. Thank you very much for joining in. I'm very happy that you would like to join, and I speak for both of my colleagues that will be with you through the entire course. We think it's great that you are interested, and we'd love to take the opportunity to follow you through the field of solar energy with special focus on how we're going to lift human energy demand in the future through new methodologies. In this case it's the eh, the quick and fast method of manufacturing a very, very light solar harvesting device, a plastic solar cell. My name is Frederik Krebs. I'm a professor at the Technical University of Denmark. And I've been working with polymer solar cells for many, many years. I always believed in it. I still believe in it. There are still a lot of challenges to solve, and we're working on it. And hopefully, after you finish the course, you will be able to step in, help us, and together we'll be able to lift humankind into a renewable and clean energy future. >> My name is Mikkel, and I'm a senior scientist at the Technical University of Denmark. I'm also working with organic solar cells. And in this course I will focus on stability issues which is a very important factor for devices that contain organic materials that are subject to water and oxygen with the added component of light. >> My name is Eva and I am a senior scientist here at the Technical University of Denmark. Here I do research in the field of organic photovoltaics, and I combine this area with my interest in organic synthesis, organic chemistry, and materials and design. >> Now you've met me, you've met Eva, you've met Mikkel, and we are very happy all of us, as you can see, that you have joined in. We would also like to know something about you. This will help us adapt and react to the need of the scholar wishing to follow us. It will also enable us to, in the future, tailor and maybe readapt some of the stuff we've done, maybe some of the stuff we haven't done so well. So, we really look forward to your help.