Oxysalt based synergistic dual interfacial engineering for high performance p–i–n structured perovskite solar cells

Literature Information

Publication Date 2023-11-28
DOI 10.1039/D3TA05876J
Impact Factor 12.732
Authors

Pramila Patil, Sung-Nam Kwon, Sushil S. Sangale, Dilpreet Singh Mann, Seok-In Na


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Abstract

Inverted perovskite solar cells (IPeSCs) have attracted extensive attention due to low-temperature processability and prospects for scale-up production. However, the power conversion efficiency (PCE) of IPeSCs lags compared to normal architecture, which is mainly due to inadequate interfaces of charge transport layers, viz electron and hole transport layers (ETL and HTL) and perovskite that suffers from carrier recombination paving the way for bulk recombination impeding the PCE and long-term stability of small devices. It is crucial to introduce an effective technique to reduce the interfacial non-radiative recombination losses at both interfaces of the perovskite layer. In this work, we demonstrated a multifunctional strategy to passivate the interface defects via the interactions and synergistic effect of anions and cations produced from sodium nitrate (NaNO3), a π-conjugated oxysalt, at HTL/perovskite and ETL/perovskite interfaces. The synergistic effect of cation and anion bonding and interaction was confirmed by various experimental studies that decreased defect densities and improved the transfer of charges. The synergistic effect with double-side passivated devices showed a champion PCE of 21.53% as compared to pristine (19.08%), bottom (20.16%), and top (20.83%) passivated devices. The π-conjugated oxysalt also improved the IPeSC stability by building a moisture-resistant interface. This work signifies the effect of chemical bonding engineering via cations and anions at dual-perovskite interfaces for synergistically enhanced PCE and long-term stability of IPeSCs.

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Journal of Materials Chemistry A

Journal of Materials Chemistry A
CiteScore: 19.5
Self-citation Rate: 4.7%
Articles per Year: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

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