Rational design of highly efficient flexible and transparent p-type composite electrode based on single-walled carbon nanotubes

Pramod M. Rajanna, Hosni Meddeb, Oleg Sergeev, Alexey P. Tsapenko, Sergei Bereznev, Martin Vehse, Olga Volobujeva, Mati Danilson, Peter D. Lund*, Albert G. Nasibulin

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

26 Citations (Scopus)
43 Downloads (Pure)


Transparent electrodes are of great importance in electronics and energy technologies. At present, transparent conductive oxides are mainly n-type conductors dominating the market and have restricted the technological advancements. Single-walled carbon nanotubes (SWCNTs) have recently emerged as promising p-type transparent conductor owing to their superior hole mobility, conductivity, transparency, flexibility and possibility to tune the work function. Here, we develop a novel rational design of p-type flexible transparent conductive film (TCF) based on SWCNTs combined with poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), molybdenum oxide and SWCNT fibers. In a configuration of SWCNTs-MoO3-PEDOT:PSS/SWCNT fibers, we achieved a record equivalent sheet resistance of 17 Ω/sq with a transmittance of 90% at 550 nm and a high degree of flexibility. We demonstrate that our solar cells developed on the basis of the proposed electrode and hydrogenated amorphous silicon (a-Si:H) yield an outstanding short-circuit current density of Jsc = 15.03 mA/cm2 and a record power conversion efficiency of PCE = 8.8% for SWCNTs/a-Si:H hybrid solar cells. We anticipate that this novel rationally designed p-type TCF opens a new avenue in widespread energy technologies, where high hole conductivity and transparency of the material are prerequisites for their successful implementation.

Original languageEnglish
Article number104183
Pages (from-to)1-9
Number of pages9
JournalNano Energy
Early online date1 Jan 2019
Publication statusPublished - Jan 2020
MoE publication typeA1 Journal article-refereed


  • Composite
  • Flexible
  • Hybrid thin film solar cells
  • Single-walled carbon nanotubes
  • Transparent p-type electrode


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