1. Gravure-printed ZnO in fully roll-to-roll printed inverted organic solar cells
- Author
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Jukka Hast, Marja Vilkman, Marja Välimäki, Gianni Corso, Pälvi Apilo, Riccardo Po, Anderea Bernardi, and Mari Ylikunnari
- Subjects
Materials science ,Inkwell ,Organic solar cell ,Energy conversion efficiency ,Nanoparticle ,zinc oxide ,Nanotechnology ,Polymer solar cell ,Roll-to-roll processing ,General Energy ,gravue printing ,Nanometre ,nanoparticles ,roll-to-roll processing ,Layer (electronics) ,polymer solar cells - Abstract
We present a gravure printing process for zinc oxide (ZnO) nanoparticle ink to be used as a hole-blocking layer in inverted organic solar cells, enabling the production of patterned devices with freedom of design. The printability of the ink is optimized in a pilot-scale roll-to-roll (R2R) process, leading to smooth layers having a thickness of few tens of nanometers. The properties of the printed ZnO film are further optimized using R2R post-printing plasma treatment, which leads to increased adhesion and power conversion efficiency (PCE). The functionality of the printed ZnO layer is demonstrated in fully R2R-printed inverted solar cells showing high performance (2.9 % mean PCE).
- Published
- 2015