5 years ago

Hybrid Ag Nanowire–ITO as Transparent Conductive Electrode for Pure Sulfide Kesterite Cu2ZnSnS4 Solar Cells

Hybrid Ag Nanowire–ITO as Transparent Conductive Electrode for Pure Sulfide Kesterite Cu2ZnSnS4 Solar Cells
Martin Green, Fangyang Liu, Zi Ouyang, Heng Sun, Kaiwen Sun, Xiaojing Hao, Jongsung Park, Chang Yan
We present the hybrid silver nanowire network–ultrathin ITO as the transparent conductive electrode for earth-abundant and environmentally friendly pure sulfide Cu2ZnSnS4 solar cells, replacing the scarce and expensive ITO. For this new hybrid transparent electrode, sputtered intrinsic zinc oxide is introduced as an antireflective coating replacing MgF2 in traditional Cu2ZnSnS4 solar cells. Random arrays of silver nanowire network with different densities hybridized with 20 nm ITO layer are employed in Cu2ZnSnS4 devices and their device performance is compared with the reference device with conventional ITO electrode. The devices with the hybrid electrodes with similar sheet resistance to ITO show generally improved current density due to their better optical transparency than ITO while maintaining similar fill factor. Cu2ZnSnS4 devices with low density Ag  nanowire hybrid electrode give the highest efficiency of 6.4% on average mainly due to improved current density, among which the highest efficiency value is 6.72%. Here, 20 nm intrinsic zinc oxide is selected as an antireflective coating based on optical FDTD simulations, which gives an additional 5% increase in current density and efficiency. A Cu2ZnSnS4 device with the low density hybrid electrode is improved from 6.72 to 6.84% after introducing an intrinsic zinc oxide antireflective coating layer.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b05776

DOI: 10.1021/acs.jpcc.7b05776

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.