Inverted bulk-heterojunction solar cell with cross-linked hole-blocking layer

Udum Y., Denk P., Adam G., Apaydin D. H., Nevosad A., Teichert C., ...Daha Fazla

ORGANIC ELECTRONICS, cilt.15, sa.5, ss.997-1001, 2014 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 15 Sayı: 5
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.orgel.2014.02.009
  • Dergi Adı: ORGANIC ELECTRONICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.997-1001
  • Anahtar Kelimeler: Organic solar cell, Device design, Electrical contact, Stability
  • Gazi Üniversitesi Adresli: Evet

Özet

We have developed a hole-blocking layer for bulk-heterojunction solar cells based on cross-linked polyethylenimine (PEI). We tested five different ether-based cross-linkers and found that all of them give comparable solar cell efficiencies. The initial idea that a cross-linked layer is more solvent resistant compared to a pristine PEI layer could not be confirmed. With and without cross-linking, the PEI layer sticks very well to the surface of the indium-tin-oxide electrode and cannot be removed by solvents used to process PEI or common organic semiconductors. The cross-linked PEI hole-blocking layer functions for multiple donor-acceptor blends. We found that using cross-linkers improves the reproducibility of the device fabrication process. (C) 2014 The Authors. Published by Elsevier B.V.