Enhancing the performance of polymer solar cells using solution-processed copper doped nickel oxide nanoparticles as hole transport layer
Solution-processed Cu-doped NiOx nanoparticles is an efficient hole transport layer in polymer solar cells. The Cu doping enhances the electrical conductivity and improves the interface contacts with the active layer, thereby improving the device efficiency. [Display omitted] Polymer solar cells (PS...
Saved in:
Published in | Journal of colloid and interface science Vol. 535; no. C; pp. 308 - 317 |
---|---|
Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Elsevier Inc
01.02.2019
Elsevier |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Solution-processed Cu-doped NiOx nanoparticles is an efficient hole transport layer in polymer solar cells. The Cu doping enhances the electrical conductivity and improves the interface contacts with the active layer, thereby improving the device efficiency.
[Display omitted]
Polymer solar cells (PSCs) are considered promising energy power suppliers due to their light weight, printability, low-energy fabrication and roll-to-roll processability. Recently, the solution-processed NiOx nanoparticles have been a desirable interfacial material for hole transport in the PSCs, instead of organic semiconductors. However, pure NiOx films restrain the high performance of PSCs due to their poor electrical characteristics caused by the localized orbital distribution at the top of valence band. Therefore, metal ion doping has been explored as a method to endow NiOx nanoparticles with the appropriate electrical characteristics. Herein, we applied solution-processed Cu-doped NiOx (Cu:NiOx) nanoparticles as an efficient hole transport layer (HTL) in PSCs. The Cu-doped NiOx enhanced the electrical conductivity of the material and improved the interface contact with the active layer, which remarkably facilitated the hole extraction and effectively suppressed the carrier recombination at the interface. Thus, a higher power conversion efficiency of 7.05%, corresponding to an approximately 30% efficiency improvement compared with that of a pristine NiOx interlayer (5.44%) in poly[N- 9′’-hepta-decanyl-2,7-carbazolealt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-ben-zothiadiazole)]:[6,6]-phenyl-C71-butyric acid methyl ester (PCDTBT:PC71BM)-based PSCs, was achieved by the proposed device. The developed solution-processed Cu:NiOx nanoparticles may be an excellent alternative for interfacial materials in PSCs or other optoelectronic devices requiring HTLs. |
---|---|
Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 USDOE Office of Electricity (OE), Advanced Grid Research & Development. Power Systems Engineering Research 2016YFB0401001 |
ISSN: | 0021-9797 1095-7103 |
DOI: | 10.1016/j.jcis.2018.10.013 |