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

Dian Wang, Kah H. Chan, Naveen Kumar Elumalai, Md. Arafat Mahmud, Mushfika B. Upama, Ashraf Uddin, Supriya Pillai

Research output: Contribution to journalArticleResearchpeer-review

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.

LanguageEnglish
Pages25016-25024
Number of pages9
JournalPhysical Chemistry Chemical Physics
Volume19
Issue number36
DOIs
Publication statusPublished - 28 Sep 2017
Externally publishedYes

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solar cells
Metals
engineering
Polarization
Nanoparticles
nanoparticles
Electrodes
Charge carriers
metals
Hysteresis
interlayers
selectivity
electrodes
impedance measurement
polarization
charge carriers
hysteresis
poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)
Perovskite solar cells

Cite this

Wang, Dian ; Chan, Kah H. ; Elumalai, Naveen Kumar ; Mahmud, Md. Arafat ; Upama, Mushfika B. ; Uddin, Ashraf ; Pillai, Supriya. / Interfacial engineering of hole transport layers with metal and dielectric nanoparticles for efficient perovskite solar cells. In: Physical Chemistry Chemical Physics. 2017 ; Vol. 19, No. 36. pp. 25016-25024.
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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.",
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Interfacial engineering of hole transport layers with metal and dielectric nanoparticles for efficient perovskite solar cells. / Wang, Dian; Chan, Kah H.; Elumalai, Naveen Kumar; Mahmud, Md. Arafat; Upama, Mushfika B.; Uddin, Ashraf; Pillai, Supriya.

In: Physical Chemistry Chemical Physics, Vol. 19, No. 36, 28.09.2017, p. 25016-25024.

Research output: Contribution to journalArticleResearchpeer-review

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