High performance carbon-based printed perovskite solar cells with humidity assisted thermal treatment

Hashmi, Syed Ghufran; Martineau, David; Dar, M. Ibrahim; Myllymäki, Teemu T. T.; Sarikka, Teemu; Vainio, Ulla; Zakeeruddin, Shaik M.; Grätzel, Michaël

doi:10.1039/c7ta04132b

Cited by 99 publications

(114 citation statements)

References 24 publications

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“…As a result, the pore was well filled and the efficiency of such printable hole‐conductor‐free PSCs was boosted to a certified efficiency of 12.84% in 2014 . This method also has been reported by several other groups . In addition to 5‐AVA, other additives which can bind to substrates and perovskites at the same time such as 4‐(aminomethyl) benzoic acid hydroiodide (ABI), butylphosphonic acid 4‐ammonium (4‐ABPA) chloride, and amino‐propyltrimethoxysilane …”

Section: Modulating Morphologysupporting

confidence: 59%

A Review on Additives for Halide Perovskite Solar Cells

Liu

Guan

Sheng

et al. 2019

Advanced Energy Materials

285

240

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Additives are widely adopted for efficient, stable, and hysteresis‐free perovskite solar cells and play an important role in various breakthroughs of perovskite solar cells (PSCs). Herein the various additives adopted for PSCs are reviewed and their functioning mechanism and influence on device performance is described. The main roles of additives, modulating morphology of perovskite films, stabilizing phase of formamidinium (FA) and cesium (Cs)‐based perovskites, adjusting energy level alignment in PSCs, suppressing nonradiative recombination in perovskites, eliminating hysteresis, enhancing operational stability of PSCs, are summarized.

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Section: Modulating Morphologysupporting

confidence: 59%

A Review on Additives for Halide Perovskite Solar Cells

Liu

Guan

Sheng

et al. 2019

Advanced Energy Materials

285

240

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“…The PCEs of all devices appeared to improve over the first few days after fabrication, then remain stable for the remainder of the testing period. The initial improvement in PCE might be due to improved crystallization of the perovskite after exposure to moisture, as has been observed in carbon‐based PSCs …”

Section: Resultsmentioning

confidence: 99%

“…Thei nitial improvement in PCE might be due to improved crystallization of the perovskite after exposuret om oisture,a sh as been observedi ncarbon-based PSCs. [16] We also tested the stability of devices with 0% excessa nd 15 %e xcess PbI 2 under continuous simulated solar illumination and ambient conditions (25 8Ca nd 65 %R H) by maximum power point tracking (MPPT) for 68 hours,a ss hown in Figure 5b.T here was virtually no decreaseo fc urrent over this period for as toichiometric ratio of PbI 2 /MAI in the carbon-based structure,w hereas the current reduced by approximately 10 %o ver 68 hours of continuous illumination for the device containing15% excess PbI 2 .…”

Section: Devices Tabilitymentioning

confidence: 99%

Effect of Excess PbI₂ in Fully Printable Carbon‐based Perovskite Solar Cells

Kapoor¹,

Bashir

Haur³

et al. 2017

Energy Tech

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Excess lead iodide (PbI2) has been reported to improve the power conversion efficiency (PCE) in the standard perovskite solar cell (PSC) with 2,2,7,7‐Tetrakis(N,N‐di‐p‐methoxyphenyl‐amine)‐9,9‐ spirobifluorene (spiro‐OMeTAD) as a hole‐transporting material. In this study, we studied the effect of having excess PbI2 in fully printable carbon‐based perovskite solar cells (PSC). Excess amounts of PbI2, ranging from 0 % to 15 %, were added to the equimolar perovskite solution for infiltration in the carbon‐based PSC architecture. There was an improvement in the average value of open‐circuit voltage (0.87 to 0.91 V) with increased PbI2, but there was no clear trend in fill factor and current density. All devices showed good stability under ambient conditions without encapsulation. The device containing 15 % excess PbI2 showed degradation under continuous illumination, whereas there was no degradation with an equimolar ratio of perovskite precursors.

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“…In the fabrication of C‐PSCs, perovskite must form within the pores of the cell's functional layers. The complete removal of solvents from the depth of the cell might prove difficult in some cases, and various solvents and deposition conditions have been reported to address this issue . Perovskites have been shown to possess some unusual material properties, including ion migration and self‐healing .…”

Section: Introductionmentioning

confidence: 99%

Evolution of Photovoltaic Performance in Fully Printable Mesoscopic Carbon‐Based Perovskite Solar Cells

2019

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Hole‐conductor–free carbon‐based perovskite solar cells (C‐PSCs) are a promising candidate for commercialization due to low cost, simple, and industry applicable fabrication methods. However, when measuring the photovoltaic parameters of these cells, they do not achieve their maximal performance immediately following their fabrication, but rather require a certain maturation period. Herein, the natural and induced changes that occur in C‐PSCs are studied after their fabrication is complete. It is observed that the current density increases by natural maturation, and the open‐circuit voltage increases by light‐soaking treatment. Using charge extraction, intensity‐modulated photovoltage spectroscopy, and voltage decay measurements during the three steps of maturation, it is possible to observe some changes in crystallization and surface traps, which are the cause for the evolution in the photovoltaic parameters. Moreover, in the case of two‐step deposition, the cells achieve their final performance already as fresh cells in contrast to the case of one‐step deposition cells. The conclusions offer practical information regarding the preparation and optimal measurement conditions of C‐PSCs as well as possible prospects for the improvement and optimization of this cell type.

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High performance carbon-based printed perovskite solar cells with humidity assisted thermal treatment

Abstract: We report humidity assisted thermal exposure (HTE) as a post-treatment method for carbon based printed perovskite solar cells (CPSCs).

Cited by 99 publications

References 24 publications

A Review on Additives for Halide Perovskite Solar Cells

A Review on Additives for Halide Perovskite Solar Cells

Effect of Excess PbI₂ in Fully Printable Carbon‐based Perovskite Solar Cells

Evolution of Photovoltaic Performance in Fully Printable Mesoscopic Carbon‐Based Perovskite Solar Cells

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High performance carbon-based printed perovskite solar cells with humidity assisted thermal treatment

Abstract: We report humidity assisted thermal exposure (HTE) as a post-treatment method for carbon based printed perovskite solar cells (CPSCs).

Cited by 99 publications

References 24 publications

A Review on Additives for Halide Perovskite Solar Cells

A Review on Additives for Halide Perovskite Solar Cells

Effect of Excess PbI2 in Fully Printable Carbon‐based Perovskite Solar Cells

Evolution of Photovoltaic Performance in Fully Printable Mesoscopic Carbon‐Based Perovskite Solar Cells

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Product

Resources

About

Effect of Excess PbI₂ in Fully Printable Carbon‐based Perovskite Solar Cells