From Event: SPIE Organic Photonics + Electronics, 2017
We report on high efficient multi-junction small-molecule organic p-i-n solar cells with an efficiency of up to 13.2% efficiency with an active area of 1.1 cm² from our labs. Furthermore, we discuss in detail the photon loss mechanisms of triple stacked solar cells of 12.5% efficiency by means of IPCE measurements in combination with an optical model. Additionally, we report about the latest findings from our fully integrated roll-to-roll vacuum production process of smallmolecule organic p-i-n tandem solar cells. Modules from Heliatek’s roll-to-roll production show efficiencies of 7.7% on the active area of 4629cm2 with a fill factor of 66%. Modules from production were analyzed via IPCE-measurement showing a good agreement with the optical calculation mentioned above. This shows that organic layer sequences developed, tested, and analyzed on a lab tool were successfully transferred to a roll to roll vacuum machine.
C. Uhrich, A. Weiß, and M. Pfeiffer, "Roll-to-roll production of organic solar cells," Proc. SPIE 10363, Organic, Hybrid, and Perovskite Photovoltaics XVIII, 103630F (Presented at SPIE Organic Photonics + Electronics: August 08, 2017; Published: 1 September 2017); https://doi.org/10.1117/12.2273833.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon