Higher Open-Circuit Voltage and Stability in MAPbI&lt;inf&gt;3&lt;/inf&gt; Perovskite Solar Cells Using A Bilayer Hole-Transport Layer with a D-A-D Architectured Polymer

Srivastava, Pranjal; Mukherjee, Rudra; Viswanathan, Vinila Nellissery; Ramamurthy, Praveen C.; Avasthi, Sushobhan

doi:10.1109/pvsc.2018.8548001

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…The well-established HTL spiro-OMeTAD has low stability in this view researchers are finding the new HTL which can possess similar properties as spiro-OMeTAD with enhanced stability. One of the possible ways to increase the stability of spiro-OMeTAD based PSC is the use of an inorganic/organic HTL along with spiro-OMeTAD in a bilayer manner [336]. The work carried out by Li et al has higher stability and maintains 90% initial efficiency over 1200 h [329].…”

Section: Bilayer Ctlsmentioning

confidence: 99%

A comprehensive review on defect passivation and gradient energy alignment strategies for highly efficient perovskite solar cells

Saykar¹,

Arya²,

Mahapatra³

2021

J. Phys. D: Appl. Phys.

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Recent advances in photovoltaic devices demonstrate a potential candidature of the lead halide perovskite solar cells (PSCs) to fulfill the all-electric future of the world. Further improvements in efficiency and stability require minimization of non-radiative recombination arising due to the tr ap states created by the vacancies and defects. The device's performance is mostly determined by the perovskite absorber material, which has single-cation, mixed-cation, and/or mixed-halide composition-dependent optoelectronic capabilities. Herein, we present an insight on the state of the art of PSCs, including types of defects, their effects, and remedies of the same. Various design strategies administered to grow highly crystalline perovskite films with low defects at interfaces are described in detail. The inclusion of a few nm thin interlayer between perovskite and charge transport layer (CTL) is an effective way to passivate the defect at the interface. Furthermore, additive engineering is emerging as an excellent strategy to grow the defect-free perovskite by simply adding a polymer, ionic liquids, organic/inorganic salts in precursor solution without precipitating after film formation. The mitigation of charge recombination could be achieved by efficient charge extraction through proper energy alignment of CTLs and absorbers. Notably, we emphasize the interface, additive, and gradient band alignment engineering and resulting improvement in the photocurrent density, photovoltage, power conversion efficiency, and long-term stability. The present review gives complete information about PSCs, starting from the selection of the materials to PSC fabrication, charge carrier dynamics, defects, effects, and remedies. We hope that this summarised information will give a basic understanding of designing new passivation strategies for advancing PSC's present state of the art.

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Section: Bilayer Ctlsmentioning

confidence: 99%

A comprehensive review on defect passivation and gradient energy alignment strategies for highly efficient perovskite solar cells

Saykar¹,

Arya²,

Mahapatra³

2021

J. Phys. D: Appl. Phys.

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“…Lead halide perovskite solar cells still struggle with stability because of hygroscopic and volatile methylammonium (MA) counterpart . Extrinsic stability, that is, stability against water and oxygen exposure, can be enhanced by device encapsulation and hydrophobic layers . Intrinsic stability, like thermal stability and stability against photoinduced degradation, requires novel compositions, for example, replacing the A-site cations .…”

Section: Introductionmentioning

confidence: 99%

Acetamidinium-Substituted Methylammonium Lead Iodide Perovskite Solar Cells with Higher Open-Circuit Voltage and Improved Intrinsic Stability

Singh

Mukherjee

Avasthi

2020

ACS Appl. Mater. Interfaces

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We report acetamidinium (AA)-substituted methylammonium (MA) lead iodide perovskite solar cells. AA has a restricted C–N bond rotation because of delocalized π-electron cloud over the N–C–N bond and the presence of an additional N–H···I bond (4H-bond in AA as compared to 3H-bond in MA). These bonding structures strengthen the electrostatic interaction and stabilize the AA cation inside the perovskite matrix. AA, a larger cation, is substitutional only up to 10%. Devices made with 10% AA-substituted films show an average V oc of 1.12 V, higher than the average V oc of 1.04 V in the case of MA lead halide perovskite (MAPbI3). This increase in V oc can be attributed to an increase in carrier lifetime from 20 μs in the case of MAPbI3 to 32 μs for 10% AA-substituted films respectively. Devices with 18.29% champion and 16.3% average efficiency were fabricated for films with 10% AA. Degradation experiments confirm that the material stability also makes devices more stable; under ambient exposure (72 ± 3% RH), devices with 10% AA retain 70% of their initial power conversion efficiencies (PCEs) up to 480 h. Under the same conditions, the PCEs of reference MAPbI3 devices reduced to 43% of their initial value in 480 h.

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D-A-D Structured Polymer Interlayer for Higher Open-Circuit Voltage and Stability in MAPbI3 Perovskite Solar Cells

Mukherjee

Srivastava

Singh

et al. 2022

J. Electron. Mater.

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Higher Open-Circuit Voltage and Stability in MAPbI<inf>3</inf> Perovskite Solar Cells Using A Bilayer Hole-Transport Layer with a D-A-D Architectured Polymer

Cited by 5 publications

References 7 publications

A comprehensive review on defect passivation and gradient energy alignment strategies for highly efficient perovskite solar cells

A comprehensive review on defect passivation and gradient energy alignment strategies for highly efficient perovskite solar cells

Acetamidinium-Substituted Methylammonium Lead Iodide Perovskite Solar Cells with Higher Open-Circuit Voltage and Improved Intrinsic Stability

D-A-D Structured Polymer Interlayer for Higher Open-Circuit Voltage and Stability in MAPbI3 Perovskite Solar Cells

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