Carl Hägglund

senior lecturer at Department of Engineering Sciences, Solid State Electronics

Email:
Carl.Hagglund[AT-sign]angstrom.uu.se
Telephone:
+4618-471 6283
Mobile phone:
+46 73 1014036
Visiting address:
Ångströmlaboratoriet, Lägerhyddsvägen. 1
Postal address:
Box 534
751 21 UPPSALA

Short presentation

I am a senior lecturer and associate professor in the area of optics for solar cell materials.

Keywords: photovoltaics nanotechnology sustainable development finite element methods solar cells nano-optics plasmonic solar cells spectroscopic ellipsometry atomic layer deposition block copolymer lithography

Also available at

My courses

Biography

I obtained my PhD in Physics from Chalmers University of Technology, Sweden. Following a long postdoctoral period at Stanford University, I am now a Senior Lecturer in the area of optics for solar cell materials at Uppsala University. My research centers on solar energy conversion on the nanoscale. On the teaching side, I lead a PhD course on the Optical characterization of thin films, among other things.

Research

My research focuses on the use of nano-optics and nanotechnology in solar cells, for both relatively established thin film solar cells (CIGS, CZTS) and for new type of solar cells (tin sulfide, perovskites).

One project, funded by the Swedish research council, explores combinations of plasmonic nanostructures and semiconductor coatings produced by atomic layer deposition (ALD), in order to realize new and much more resource efficient solar cells with ultrathin (nanometer-thickness) absorption layers.

Another project, funded by the Energy agency and the Swedish research council, investigates the possibility to create better and cheaper tandem solar cells by means of nanotechnology.

Nanofabrication is an integral part of this work and mainly deploys scalable, self-assembly based methods such as block copolymer lithography. Optical characterization, especially spectroscopic ellipsometry, and numerical calculations by the finite element method, are other essential ingredients in the search for new, highly efficient and ultimately resource saving solutions for solar energy conversion to electricity.

Publications

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