Loading...

Printable Carbon Electrode for Perovskite & Thin Film Solar Cells

Mashhoun, Sara | 2018

878 Viewed
  1. Type of Document: Ph.D. Dissertation
  2. Language: Farsi
  3. Document No: 52173 (48)
  4. University: Sharif University of Technology
  5. Department: Institute for Nanoscience and Nanotechnology
  6. Advisor(s): Taghavinia, Nima; Tajabadi, Fariba; Mohammadpour, Raheleh
  7. Abstract:
  8. Solar cells, as a part of photovoltaics (PV) industry, have a significant share in the renewable energy market. Perovskite solar cells (PSCs) and thin film solar cells (TFSCs) achieved 23% and 22% power conversion efficiencies (PCEs) respectively. However, the PV industry still faces challenges like “high manufacturing costs” and “stability”. Among the strategies to overcome these challenges are substitution of the costly materials with cheaper, more abundant ingredients along with utilizing inexpensive deposition methods like printing rather than vacuum-based methods such as evaporation and sputtering. Carbon materials attract more attention in the solar cell research community for their abundant availability and low costs along with unique electronic and optical properties. There are attempts to make “all-carbon” solar cells, i.e. solar cells in which all the active layer, interfaces and contacts are made from carbon. The conventional electrode used in various solar cell architectures is made from metals like gold, silver or aluminum, which is deposited by vacuum-based methods like evaporation or sputtering. Printable carbon electrodes on the other hand, impose lower costs to the industry, due to both material and deposition method. The possibility to deposit these electrodes by printing, allows large-scale roll-to-roll production. Investigations show improved cell stability in case of carbon-based electrodes as compared to evaporated metal electrodes. In this thesis, printed carbon electrodes in perovskite as well as chalcogenide solar cells is investigated. More than 12% PCE for totally-low-temperature-processed (<150 °C) PSCs with printed carbon electrode is reported. Carbon-based PSCs attained more than 80% of the initial PCE after 1000 hours under constant stimulated AM 1.5 illumination. Solution-processed TFSCs with superstrate architecture also made based on CuInS2 (CIS) and Cu2ZnSnS4 (CZTS) absorbers with a printed carbon back contact. TFSCs made with CIS nanoparticle ink yield 5.2% PCE under stimulated sunlight
  9. Keywords:
  10. Photovoltaic Devices ; Perovskite-Based Solar Cell ; Thin Film Solar Cell ; Carbon Electrode ; Materials Bill ; Stability

 Digital Object List

 Bookmark

No TOC