Inkjet printed silver nanowire network as top electrode for semi-transparent organic photovoltaic devices

A method for direct inkjet printing of silver nanowire (Ag NW) to form transparent conductive network as the top electrode for inverted semi-transparent organic photovoltaic devices (OPV) was developed. The highest power conversion efficiency of the poly(3-hexylthiophene):phenyl-C61–butyric acid methyl ester (P3HT:PC61BM) based OPV was achieved to be 2.71% when the top electrode was formed by 7 times of printing. In general, devices with printed Ag NW top electrode had similar open-circuit voltage (VOC, around 0.60 V) but lower fill factor (FF, 0.33–0.54) than that of device with thermally deposited Ag opaque electrode (reference device). Both FF and short-circuit current density (JSC), however, were found to be increasing with the increase of printing times (3, 5, and 7), which could be partially attributed to the improved conductivity of Ag NW network electrodes. The solvent effect on device performances was studied carefully by comparing the current density-voltage (J-V) curves of different devices. Th...

[1]  Christoph J. Brabec,et al.  Spray‐Coated Silver Nanowires as Top Electrode Layer in Semitransparent P3HT:PCBM‐Based Organic Solar Cell Devices , 2013 .

[2]  Lionel Hirsch,et al.  P3HT:PCBM, Best Seller in Polymer Photovoltaic Research , 2011, Advanced materials.

[3]  John R. Reynolds,et al.  Transparent, Conductive Carbon Nanotube Films , 2004, Science.

[4]  D.S.H. Chan,et al.  Origin of Different Dependences of Open-Circuit Voltage on the Electrodes in Layered and Bulk Heterojunction Organic Photovoltaic Cells , 2010, IEEE Transactions on Electron Devices.

[5]  Alex K.-Y. Jen,et al.  Metal grid/conducting polymer hybrid transparent electrode for inverted polymer solar cells , 2010 .

[6]  Y. Kim,et al.  Transparent, dip-coated silver nanowire electrodes for small molecule organic solar cells , 2013 .

[7]  Yi Cui,et al.  Solution-processed metal nanowire mesh transparent electrodes. , 2008, Nano letters.

[8]  Peter Peumans,et al.  Smooth Nanowire/Polymer Composite Transparent Electrodes , 2011, Advanced materials.

[9]  D. Bradley,et al.  Efficient Organic Solar Cells with Solution‐Processed Silver Nanowire Electrodes , 2011, Advanced materials.

[10]  D. Bellet,et al.  Flexible transparent conductive materials based on silver nanowire networks: a review , 2013, Nanotechnology.

[11]  Wenchao Yang,et al.  Mechanisms of device degradation in organic solar cells: Influence of charge injection at the metal/organic contacts , 2013 .

[12]  F. Krebs,et al.  Flexible ITO‐free polymer solar cells , 2013 .

[13]  Brett D. Martin,et al.  Towards a Transparent, Highly Conductive Poly(3,4‐ethylenedioxythiophene) , 2004 .

[14]  Richard R. Lunt,et al.  Theoretical limits for visibly transparent photovoltaics , 2012 .

[15]  Weiwei Li,et al.  Universal correlation between fibril width and quantum efficiency in diketopyrrolopyrrole-based polymer solar cells. , 2013, Journal of the American Chemical Society.

[16]  Richard R. Lunt,et al.  Transparent Luminescent Solar Concentrators for Large‐Area Solar Windows Enabled by Massive Stokes‐Shift Nanocluster Phosphors , 2013 .

[17]  J. Martorell,et al.  Transparent polymer solar cells employing a layered light-trapping architecture , 2013, Nature Photonics.

[18]  Wenjing Tian,et al.  Investigation on polymer anode design for flexible polymer solar cells , 2008 .

[19]  T. Benouaz,et al.  Influence of charge carrier mobility and surface recombination velocity on the characteristics of P3HT:PCBM organic solar cells , 2014 .

[20]  Uli Lemmer,et al.  Solution-processed polymer–silver nanowire top electrodes for inverted semi-transparent solar cells , 2013 .

[21]  M. Wegener,et al.  A new approach to the solvent system for inkjet-printed P3HT:PCBM solar cells and its use in devices with printed passive and active layers , 2010 .

[22]  Yi Cui,et al.  Semitransparent organic photovoltaic cells with laminated top electrode. , 2010, Nano letters.

[23]  Christoph J. Brabec,et al.  Recombination and loss analysis in polythiophene based bulk heterojunction photodetectors , 2002 .

[24]  Chang Su Kim,et al.  Highly Efficient and Bendable Organic Solar Cells with Solution‐Processed Silver Nanowire Electrodes , 2013 .

[25]  K. Müllen,et al.  Transparent, conductive graphene electrodes for dye-sensitized solar cells. , 2008, Nano letters.

[26]  H. Riel,et al.  Current injection from a metal to a disordered hopping system. III. Comparison between experiment and Monte Carlo simulation , 1999 .

[27]  O. Inganäs,et al.  Influence of buffer layers on the performance of polymer solar cells , 2004 .

[28]  Andrea Bernardi,et al.  The role of buffer layers in polymer solar cells , 2011 .