Suppression of ion migration through cross-linked PDMS doping to enhance the operational stability of perovskite solar cells

Kang, Junjie; Huang, Rong; Guo, Shuxuan; Han, Guanghui; Sun, Xiaofeng; Ismail, Irfan; Ding, Changzeng; Li, Fangsen; Luo, Qun; Li, Yuanjie; Ma, Chang‐Qi

doi:10.1016/j.solener.2021.01.025

Cited by 15 publications

(26 citation statements)

References 42 publications

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“…[ 27 ] These studies have ignored that the high volatility or high diffusion coefficient of small molecules likely cause comigration phenomenon and difficulties in practical operation of devices. Some researchers have introduced polycaprolactone, [ 28 ] polydimethylsiloxane, [ 29 ] or in situ crosslinkable trimethylolpropane triacrylate molecule to construct polymer networks in perovskite GBs, [ 30 ] while that of polymer additives only restrict the paths of ionic migration rather than suppressing the ionic migration originally. Rare studies of ion immobilization are conducted concurrently from physical barrier and chemical anchoring in perovskite GBs.…”

Section: Introductionmentioning

confidence: 99%

Uncovering the Mechanism of Poly(ionic‐liquid)s Multiple Inhibition of Ion Migration for Efficient and Stable Perovskite Solar Cells

Yang

Sheng

et al. 2022

Advanced Energy Materials

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make it one of the most promising photovoltaic technologies. [1,2] Although such solar cells have been demonstrated with a certified power conversion efficiency (PCE) reaching 25.5% for laboratory scale devices, [3] successful commercialization of PVSCs still lacks mature large-area manufacturing technology and reliable long-term stability. [4] With the continuous improvement of printing technology, the fabrication of large-area perovskite photovoltaic devices has become possible and is expected to be compatible with industrial-level manufacturing in the coming future. [5,6] However, the intrinsic and extrinsic instabilities of PVSCs remain the tremendous hurdles on the road to commercialization.The photovoltaic performance of perovskite materials is vulnerable to operating environment. In general, the main degradation pathways of perovskite can be classified as two broad categories: one is susceptible to irreversible degradation under external environment stimulants (moisture, oxygen, heat, UV light, etc.) [7] and the other arises due to intrinsic defects caused by ion migration and organic cations or halide ions losses. [8] Generally speaking, aging degradation caused by hydration and oxidation (with assistance of external stress of moisture, oxygen, etc.) can be addressed with advanced encapsulation techniques. [9] However, numerous theoretical calculations and experimental observations document that the intrinsic ion migration phenomenon of hybrid perovskite materials cannot be avoided by encapsulation. [10,11] Thus far, almost all reported high-efficiency PVSCs are based on solution-prepared ionic polycrystalline perovskite absorbers, whose ionic characteristics make them prone to phase segregation, chemical degradation, and current-voltage hysteresis of devices, especially when suffering from illumination, heat, or external electric field. [12][13][14] Ironically, although the migratory ions can passivate the interface to promote carrier transport and collection in some special cases, it brings more serious hysteresis effects and stability issues in perovskite photovoltaic devices. [15,16] The problematics of the ion migration in perovskite can be ascribed to the lower activation energies (0.2-0.8 eV) of the organic and halide ions (e.g., MA + or I − ), which makes the ions

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Section: Introductionmentioning

confidence: 99%

Uncovering the Mechanism of Poly(ionic‐liquid)s Multiple Inhibition of Ion Migration for Efficient and Stable Perovskite Solar Cells

Yang

Sheng

et al. 2022

Advanced Energy Materials

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“…has utilized cross‐linked polymer (PDMS) to suppress ion migration, and consequently, enhance the stability of the device. [ 244 ] The quantity of curing agent in PDMS has been varied, and the same combination was tried in the PSC. The typical film formation process of PDMS‐doped perovskite with PDMS to curing agent concentration ratios (w/o curing, i.e., 1:0 and with curing, i.e., 5:1) is shown in Figure 12 a.…”

Section: Challenges and Remedial Steps To Boost Pscs Performancementioning

confidence: 99%

“…has analytically tested the effect of curing agent quantity on the device performance and its stability. [ 244 ] The J–V behavior of the device with PDMS doped active layer (perovskites) is depicted in Figure 12b. The PDMS with curing agent (10:1) doped perovskite film based devices have shown the slight improvement in the PCE (16.3%) as compared to the reference device (15.24%).…”

Section: Challenges and Remedial Steps To Boost Pscs Performancementioning

confidence: 99%

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Emerging Perovskite Solar Cell Technology: Remedial Actions for the Foremost Challenges

Sahare

Pham

Angmo

et al. 2021

Advanced Energy Materials

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Perovskite solar cells (PSCs) exhibit the steepest growth in power conversion efficiency among the existing photovoltaic technologies. However, a wide range of factors restrict the commercial viability of PSCs as a renewable energy source. This article reviews the latest progress in PSC devices including innovative light‐harvesting perovskite materials and advanced interfacial layers, and the foremost challenges. The most promising remedial solutions to challenges are also discussed. For the realization of a high performing and eco‐friendly stabilized perovskite photovoltaic device, a combinational method involving multiple restorative solutions is required. A specific emphasis is given to unveiling interesting perovskite properties, and device fabrication approaches to the solutions. These remedies and strategies may help researchers to select appropriate methods and design their experiments to obtain a high photo‐conversion efficiency in photovoltaic devices with enhanced stability as compared to conventional photovoltaic devices.

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“…31,36,37 In comparison, the polymer additives exhibited some unique advantages; 38 for example, the network skeleton of poly(methyl methacrylate) 39 was used as a template to facilitate crystal growth and the long chain polydimethylsiloxane can inhibit ion migration. 29 Moreover, the macromolecular polymer can act as a natural hydrophobic layer to improve the moisture resistance of the perovskite layer. 21,37,40 However, the solubility of polymers is problematic because of their large molecular weight, leading to unintentional precipitation or inhomogeneous distribution in the precursor solution.…”

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confidence: 99%

In Situ Polymer Network in Perovskite Solar Cells Enabled Superior Moisture and Thermal Resistance

et al. 2022

J. Phys. Chem. Lett.

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Perovskite decomposition arising from water permeation and heat induced crystal expansion is a major obstacle restricting the long-term durability of perovskite solar cells (PSCs). Herein, a polymerizable methyl acrylate (MCE) was employed as dopants in the deposition of perovskite thin films. Owing to the in situ formed polymer network, the environment moisture can be retained on the perovskite surface as the formation of a thin layer of perovskite monohydrate to prevent their deep penetration and transverse spread, and the heat tolerance of the perovskite was also improved because of the anchor structure between Pb 2+ and −CO groups and the agglomeration effect of the polymerized MCE. Moreover, MCE can coordinate with Pb 2+ ions and some of them were volatilized during crystallization, resulting in preferred crystal orientations and suppressed nonradiative recombination. As a result, an excellent efficiency up to 21% with improved stability of MAPbI 3 PSC was achieved.

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Suppression of ion migration through cross-linked PDMS doping to enhance the operational stability of perovskite solar cells

Cited by 15 publications

References 42 publications

Uncovering the Mechanism of Poly(ionic‐liquid)s Multiple Inhibition of Ion Migration for Efficient and Stable Perovskite Solar Cells

Uncovering the Mechanism of Poly(ionic‐liquid)s Multiple Inhibition of Ion Migration for Efficient and Stable Perovskite Solar Cells

Emerging Perovskite Solar Cell Technology: Remedial Actions for the Foremost Challenges

In Situ Polymer Network in Perovskite Solar Cells Enabled Superior Moisture and Thermal Resistance

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