Premium
Gravure‐Printed ZnO in Fully Roll‐to‐Roll Printed Inverted Organic Solar Cells: Optimization of Adhesion and Performance
Author(s) -
Vilkman Marja,
Apilo Pälvi,
Välimäki Marja,
Ylikunnari Mari,
Bernardi Andrea,
Po Riccardo,
Corso Gianni,
Hast Jukka
Publication year - 2015
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201402155
Subject(s) - roll to roll processing , materials science , organic solar cell , nanotechnology , energy conversion efficiency , layer (electronics) , inkwell , adhesion , nanometre , screen printing , printed electronics , optoelectronics , composite material , polymer
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).