Grain‐Slip Derived Network Topology to Remarkable Strength–Toughness Combination of Perovskite Film for Flexible Solar Cells

Lu, Zheng; Lou, Yanhui; Xiao, Lingbo; Xu, Xiaoli; Wang, Chen; Li, Lutao; Su, Xiaodong; Zou, Guifu

doi:10.1002/aenm.202202298

Cited by 14 publications

(8 citation statements)

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“…Additives help passivating defects in perovskites and improving the mechanical stability of inverted FPSCs. [84,90,97,[175][176][177][178] Generally, introducing cations of different sizes into perovskites causes microstrain of c) Reproduced with permission. [169] Copyright 2021, Wiley-VCH.…”

Section: Additive Engineeringmentioning

confidence: 99%

“…Additives help passivating defects in perovskites and improving the mechanical stability of inverted FPSCs. [ 84,90,97,175–178 ] Generally, introducing cations of different sizes into perovskites causes microstrain of perovskite films, which affects the optoelectronic properties of inverted FPSCs. Yan et al reported a method of alleviating microstrain in perovskite films by additive engineering.…”

Section: Perovskite Active Layersmentioning

confidence: 99%

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Functional Layers of Inverted Flexible Perovskite Solar Cells and Effective Technologies for Device Commercialization

Zhuang

Zhou

et al. 2023

Small Structures

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Perovskite solar cells (PSCs) have emerged as a rising star in photovoltaic fields in recent years due to their very impressive properties such as ease of fabrication, low cost, and high-power conversion efficiency (PCE). [1][2][3][4][5][6][7][8][9][10][11] Over the past decade, the PCEs of PSCs have dramatically increased to certified record values of 25.7% and 25.37% for single-junction regular n-i-p and inverted p-i-n PSCs, respectively, owing to excellent properties of perovskite such as high light absorption coefficient, [12] long carrier lifetime, [13,14] and outstanding defect tolerance, [15][16][17] indicating a high potential for commercialization. [1][2][3][18][19][20][21][22][23][24][25][26][27][28][29][30][31] Meanwhile, as electronic technologies advance, the demand for unmanned systems, wearable and portable electronics, multifunctional integrated buildings, aerospace applications, and self-powered bioelectronics grows. [32][33][34][35][36][37][38][39][40] Flexible solar cells may play an important role in the development of these flexible electronic products. Thus, in recent years, researchers' research interests focus on high-performance flexible solar cells. [41][42][43][44][45][46][47] It must be pointed out that the perovskites are more advantageous in fabrication of various flexible devices due to their low-temperature processability and high flexibility comparing with other solar cell materials. [48,49] More specifically, while other flexible solar cells, such as dyesensitized solar cells (DSSCs), cadmium telluride solar cells (CdTe), copper indium gallium selenide solar cells (CIGS), and organic photovoltaic solar cells (OPV), exhibit low PCEs, high cost, complicated fabrication process, and insufficient flexibility, [50][51][52] flexible perovskite solar cells (FPSCs) possess advantages of high PCEs, low cost, simple fabrication process, and sufficient flexibility. [45,48,49] Significantly, FPSCs could even achieve the mass production of devices through the large-area printing strategy of roll-to-roll (R2R) process to accelerate the commercial promotion of PSCs. [52] Thus, the development of FPSCs will accelerate the commercialization of PSCs in the future.Same as rigid PSCs, FPSCs can also be divided into regular n-i-p and inverted p-i-n structures, where the PCE of regular FPSCs has been boosted from 2.62% to 23.60% over the past decade, showing strong development potential. [53][54][55][56][57][58][59][60][61][62][63][64][65][66][67][68][69][70] However, regular FPSCs still face some problems brought by structural components. Generally, as the most commonly used hole transport material, N2,N2,N2 0 ,N2 0 ,N7,N7,N7 0 ,N7 0 -octakis(4methoxyphenyl)-9,9 0 -spirobi[9H-fluorene]-2,2 0 ,7,7 0 -tetramine (Spiro-OMeTAD) degrades rapidly in ambient environment due

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Section: Additive Engineeringmentioning

confidence: 99%

Section: Perovskite Active Layersmentioning

confidence: 99%

Functional Layers of Inverted Flexible Perovskite Solar Cells and Effective Technologies for Device Commercialization

Zhuang

Zhou

et al. 2023

Small Structures

View full text Add to dashboard Cite

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“…For optoelectronic materials, it is difficult to resolve the contradiction between toughness and strength while maintaining high optoelectronic properties. [163,164] Lu et al [165] designed a network topology that simultaneously improved the strength and flexibility of perovskite films. The designed sodium hyaluronate (SH) hydrogel is composed of a strong polymer network and is highly elastic.…”

Section: Light Absorbing Layermentioning

confidence: 99%

mentioning

confidence: 99%

Strain Effects on Flexible Perovskite Solar Cells

Liang,

Yang,

Xia

et al. 2023

Advanced Science

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Flexible perovskite solar cells (f‐PSCs) as a promising power source have grabbed surging attention from academia and industry specialists by integrating with different wearable and portable electronics. With the development of low‐temperature solution preparation technology and the application of different engineering strategies, the power conversion efficiency of f‐PSCs has approached 24%. Due to the inherent properties and application scenarios of f‐PSCs, the study of strain in these devices is recognized as one of the key factors in obtaining ideal devices and promoting commercialization. The strains mainly from the change of bond and lattice volume can promote phase transformation, induce decomposition of perovskite film, decrease mechanical stability, etc. However, the effect of strain on the performance of f‐PSCs has not been systematically summarized yet. Herein, the sources of strain, evaluation methods, impacts on f‐PSCs, and the engineering strategies to modulate strain are summarized. Furthermore, the problems and future challenges in this regard are raised, and solutions and outlooks are offered. This review is dedicated to summarizing and enhancing the research into the strain of f‐PSCs to provide some new insights that can further improve the optoelectronic performance and stability of flexible devices.

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“…For this reason, Lu et al designed a topological structure in which perovskite crystal particles were entangled with sodium hyaluronate (SH). [ 133 ] During the microstructure evolution of the film, the strong interaction between perovskite and SH connects the subgrains to form a network topology. This network structure achieves significantly enhanced toughness and strength of perovskite films.…”

Section: Additive Engineering In Fpscsmentioning

confidence: 99%

Recent Advances in Quality Strengthening of Perovskite Films by Additive Engineering for Efficient Solar Cells

Du,

He,

Huang

et al. 2023

Solar RRL

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In the past decade, perovskite solar cells (PSCs), exhibiting high efficiency, low cost, and flexibility, have made inspiring signs of progress and show great potential in large‐scale commercialization as representative third‐generation photovoltaic technology. Nevertheless, due to the rapid crystallization of perovskite crystals through the solution film‐forming technique, a primary challenge is the fabrication of excellent perovskite films with superior optoelectronic characteristics and good flexibility. However, the defects and lattice stresses generated in the perovskite layer during rapid crystallization might diminish the efficiency, robustness, and reliability of PSCs. To date, a variety of techniques are being identified for strengthening the quality of perovskite films, which includes interfacial engineering, solvent engineering, doping, and additives engineering. Among these strategies, developing effective additives is of utmost importance in controlling the kinetics of perovskite film crystallization, leading to improved device performance and mechanical stability, especially for flexible PSCs (FPSCs). Herein, we retrospect the state‐of‐the‐art additives developed in PSCs during the past few years, such as ionic liquids, polymers, and small organic molecules, and pay particular attention to the advanced progress of additive engineering in FPSCs. Moreover, we put forward critical perspectives on the opportunities and challenges of additive engineering in the future development of PSCs.This article is protected by copyright. All rights reserved.

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Grain‐Slip Derived Network Topology to Remarkable Strength–Toughness Combination of Perovskite Film for Flexible Solar Cells

Cited by 14 publications

References 58 publications

Functional Layers of Inverted Flexible Perovskite Solar Cells and Effective Technologies for Device Commercialization

Functional Layers of Inverted Flexible Perovskite Solar Cells and Effective Technologies for Device Commercialization

Strain Effects on Flexible Perovskite Solar Cells

Recent Advances in Quality Strengthening of Perovskite Films by Additive Engineering for Efficient Solar Cells

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