Polymeric room-temperature molten salt as a multifunctional additive toward highly efficient and stable inverted planar perovskite solar cells

Wang, Shuangjie; Yang, Bowen; Han, Jian; He, Ziwei; Cao, Qi; Yang, Jiabao; Suo, Jishuan; Li, Tongtong; Liu, Zhike; Liu, Shengzhong; Tang, Chao; Hagfeldt, Anders

doi:10.1039/d0ee02043e

Cited by 126 publications

(119 citation statements)

References 63 publications

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“…The unencapsulated PEa‐modified device displays pronounced moisture stability over 5000 h in RH of 35 ± 5%, and the encapsulated device exhibits superior long‐term operational stability by retaining over 92% of the initial performance for 1200 h under continuous light illumination at 70–75 °C (Table 5: Report L). [ 162,163 ]…”

Section: Properties and Classification Of Psc Polymeric Additivesmentioning

confidence: 99%

Role and Contribution of Polymeric Additives in Perovskite Solar Cells: Crystal Growth Templates and Grain Boundary Passivators

et al. 2021

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Polymers or polymeric materials are used as additives for promoting the nucleation and crystallization of perovskite films to increase the crystal grain size. Due to their high molecular weight, polymers remain within perovskite‐crystal grain boundaries (GBs), where they passivate trap sites. Furthermore, some polymers function as charge‐transport materials in interfacial layers to effectively separate charge carriers and reduce charge recombination. Certain hydrophobic polymers protect perovskite films against moisture, whereas elastic polymers contribute to the mechanical resilience of perovskite films by crosslinking and self‐healing. Although polymeric additives have become essential to perovskite fabrication, a thorough review has not summarized their application to perovskite solar cells. Therefore, various strategies are comprehensively discussed for incorporating typical polymers and 1D polymeric materials into perovskite materials to improve the efficiency and stability of perovskite devices. Herein, thermoplastic, hydrophilic, and conductive polymers and elastomers are focused and related works are chronologically discussed to clearly elucidate the advances in perovskite devices.

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Section: Properties and Classification Of Psc Polymeric Additivesmentioning

confidence: 99%

Role and Contribution of Polymeric Additives in Perovskite Solar Cells: Crystal Growth Templates and Grain Boundary Passivators

et al. 2021

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“…While investigating effective additives of imidazolium derivatives, polymeric room‐temperature molten salt of poly(1‐vinyl‐3‐ethyl‐acetate) imidazolium tetrafluoroborate (PEa) was synthesized and used as an additive. [ 66 ] This polymeric imidazolium salt was compared with molecular 1‐vinyl‐3‐butyl imidazolium tetrafluoroborate (Bu) and 1‐vinyl‐3‐ethylacetate imidazolium tetrafluoroborate (Ea). The molecular structures of three additives are shown in Figure 6c.…”

Section: Nonhalide Additivesmentioning

confidence: 99%

Section: Nonhalide Additivesmentioning

confidence: 99%

Nonhalide Materials for Efficient and Stable Perovskite Solar Cells

Chen

Park

2021

Small Methods

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Perovskite solar cells (PSCs) have witnessed great advancements in power conversion efficiency (PCE) and stability. Over the past several years, various nonhalide materials have been extensively developed to enhance both PCE and stability by including them in perovskite compositions, perovskite precursor materials, additives, post‐treatment reagents, dopants for charge transport materials (CTMs), CTMs, and interfacial modifiers. In this review, various nonhalide materials reported for PSCs are described and the dependence of the photovoltaic performance on anions (or in part cations) in nonhalide materials is investigated. This review highlights the importance of synergistic and rational engineering of anions and cations of the nonhalide materials in order to maximize both PCE and stability of PSCs.

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“…In the recent years, ionic liquids (ILs) have been employed as non-volatile additives due to high hydrophobicity, high surface tension properties, low-toxicity and excellent electrochemical properties and among them, the imidazolium based ILs are preferred owing to their high ionic conductivity. [60][61][62][63][64][65] Enhancement in the PCE of FAPbI3 from 17.1 to 20.06% with a 1-hexyl-3-methylimidazolium iodide (HMII) additive was reported. HMII addition improved the carrier life time from 229 ns to 1382 ns along with an increase in the PL emission suggesting the reduced non-radiative recombination and authors attributed this to the passivation of vacancies through ionic interactions of HMII.…”

Section: Controlled Crystallizationmentioning

confidence: 99%

Substance and shadow of formamidinium lead triiodide based solar cells

Kazim

Pegu

et al. 2021

Phys. Chem. Chem. Phys.

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Polymeric room-temperature molten salt as a multifunctional additive toward highly efficient and stable inverted planar perovskite solar cells

Abstract: The inferior power conversion efficiency (PCE) compared to their regular counterparts (n-i-p) and undesirable stability issues of inverted (p-i-n) perovskite solar cells (PSCs) are the foremost issues hindering their commercialization....

Cited by 126 publications

References 63 publications

Role and Contribution of Polymeric Additives in Perovskite Solar Cells: Crystal Growth Templates and Grain Boundary Passivators

Role and Contribution of Polymeric Additives in Perovskite Solar Cells: Crystal Growth Templates and Grain Boundary Passivators

Nonhalide Materials for Efficient and Stable Perovskite Solar Cells

Substance and shadow of formamidinium lead triiodide based solar cells

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