The nanorod carpets absorb light very efficiently, dramatically increasing the efficiency of solar cells and reducing the costs of their manufacturing. Picosun reports over 9% energy conversion efficiencies during the project with very good long-term stabilities of cells.
According to Picosun, another central cell component where ALD has shown its indispensability is the transparent conductive oxide (TCO) layer that works as the current collector on the top of the cell. Different TCO deposition methods were investigated in the course of the ROD-SOL project, and ALD turned out to be the ideal method regarding both the TCO film quality and the scalability of the technique. Picosun’s easy-to-use High Volume Manufacturing batch ALD system was developed specifically during the project.
“Solar photovoltaics remains one of the fastest growing industries in the world. To enable more efficient utilization of this free, clean energy, the efficiencies of the solar cells have to increase and their manufacturing costs decrease. ROD-SOL’s silicon nanorod cell concept shows promising potential to this, and we at Picosun have been especially satisfied of the ALD’s central role in realizing this innovative, high efficiency solar electricity converter,” says Picosun’s Managing Director Juhana Kostamo.
Picosun Oy is a part of Stephen Industries, and its global headquarters are located in Espoo, Finland.