Jump to main content
Jump to site search

Issue 36, 2017
Previous Article Next Article

Interfacial engineering of hole transport layers with metal and dielectric nanoparticles for efficient perovskite solar cells

Author affiliations

Abstract

In this work, we have demonstrated the incorporation of metal (Ag NPs) and dielectric nanoparticles (SiO2 NPs) into the hole transporting layers of inverted PSCs using facile deposition methods. Interfacial engineering in PSCs is accomplished by incorporating 50 nm Ag NPs or SiO2 NPs within the PEDOT:PSS interlayer. Dielectric SiO2 NPs were used for comparison purposes as a control sample to isolate morphological impacts without plasmonic effects. The photovoltaic performance of the devices significantly improved due to increased charge selectivity and enhanced charge collection properties across the interface (HTL). The recombination resistance of the SiO2 NP incorporated HTL based PSCs was 193% higher than that of the conventional devices. In-depth analysis using impedance measurements revealed that devices containing Ag or SiO2 NPs have low electrode polarization and consequently lower charge accumulation at the interface. Lower electrode polarization in the modified devices was also found to improve the charge carrier selectivity, which eventually led to enhanced fill factor and lower parasitic resistances. Interfacial engineering via NPs yielded improvements in the electrical characteristics of non-optical origin, which not only enhanced device performance, but also reduced the hysteresis effects to much lower than in the conventional inverted PSCs based on a pristine PEDOT:PSS interlayer.

Graphical abstract: Interfacial engineering of hole transport layers with metal and dielectric nanoparticles for efficient perovskite solar cells

Back to tab navigation

Supplementary files

Publication details

The article was received on 16 Jun 2017, accepted on 28 Aug 2017 and first published on 29 Aug 2017


Article type: Paper
DOI: 10.1039/C7CP04053A
Citation: Phys. Chem. Chem. Phys., 2017,19, 25016-25024
  •   Request permissions

    Interfacial engineering of hole transport layers with metal and dielectric nanoparticles for efficient perovskite solar cells

    D. Wang, K. H. Chan, N. K. Elumalai, Md. A. Mahmud, M. B. Upama, A. Uddin and S. Pillai, Phys. Chem. Chem. Phys., 2017, 19, 25016
    DOI: 10.1039/C7CP04053A

Search articles by author

Spotlight

Advertisements