Spontaneous decoration of ionic compounds at perovskite interfaces to achieve 23.38% efficiency with 85% fill factor in NiO -based perovskite solar cells

Qu, Geping; Wang, Deng; Liu, Xiaoyuan; Qiao, Yansong; Khan, Danish; Li, Yinxin; Zeng, Jie; Xie, Pengfei; Xu, Yintai; Zhu, Peide; Huang, Limin; Wang, Yang‐Gang; Xu, Baomin; Xu, Zong‐Xiang

doi:10.1016/j.jechem.2023.05.035

Cited by 10 publications

(3 citation statements)

References 51 publications

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“…Not long ago, Mei et al incorporated a nontoxic polyvinylpyrrolidone (PVP) into green antisolvent isopropanol to passivate perovskite films, building upon the foundation of environmentally-friendly practices. [90] The results indicate that passivation of the perovskite film with PVP leads to considerable reduction in nonradiative carrier recombination in the device. The presence of lone pair electrons in PVP enables the formation of shared C═O bonds with uncoordinated Pb 2þ ions in perovskite materials.…”

Section: Polymersmentioning

confidence: 94%

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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Section: Polymersmentioning

confidence: 94%

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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“…Additive doping is a simple method to avoid complex manipulation during interfacial modification. 20,21 Zhang et al 22 incorporated the organic molecule phenyl-phosphonic acid (PPA) into perovskite, which slowed the nucleation and growth of perovskite crystal and, inhibited the formation of the δ-FAPbI 3 phase, resulting in high-quality α-phase perovskite films. Xie et al 23 introduced fluorinated oligomer (FO-19) doping into perovskite, where the carboxyl groups of FO-19 coordinate with Pb ions in the perovskite film, effectively passivating defects and greatly suppressing detrimental non-radiative recombination.…”

Section: Introductionmentioning

confidence: 99%

A simple passivation strategy of Na-dithienylethene for highly efficient and stable perovskite solar cells

Wu,

Liu,

et al. 2024

J. Mater. Chem. A

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“…Developing highly efficient HTMs is crucial for high-performance PSCs. Currently, two primary types of HTMs include inorganic HTMs, such as NiOx, [14][15][16][17][18] CuSCN, [19][20] and organic HTMs, such as PTAA, PEDOT: PSS are widely used in inverted PSCs. For inorganic HTMs, most of them have poor solubility, making it challenging to create compact and smooth thin films.…”

Section: Introductionmentioning

confidence: 99%

A Fluorination Strategy and Low‐Acidity Anchoring Group in Self‐Assembled Molecules for Efficient and Stable Inverted Perovskite Solar Cells

Sun,

Fan,

et al. 2024

Chemistry A European J

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Herein, we synthesized two donor‐acceptor (D‐A) type small organic molecules with self‐assembly properties, namely MPA‐BT‐BA and MPA‐2FBT‐BA, both containing a low acidity anchoring group, benzoic acid. After systematically investigation, it is found that, with the fluorination, the MPA‐2FBT‐BA demonstrates a lower highest occupied molecular orbital (HOMO) energy level, higher hole mobility, higher hydrophobicity and stronger interaction with the perovskite layer than that of MPA‐BT‐BA. As a result, the device based‐on MPA‐2FBT‐BA displays a better crystallization and morphology of perovskite layer with larger grain size and less non‐radiative recombination. Consequently, the device using MPA‐2FBT‐BA as hole transport material achieved the power conversion efficiency (PCE) of 20.32% and remarkable stability. After being kept in an N2 glove box for 116 days, the unsealed PSCs’ device retained 93% of its initial PCE. Even exposed to air with a relative humidity range of 30±5% for 43 days, its PCE remained above 91% of its initial condition. This study highlights the vital importance of the fluorination strategy combined with a low acidity anchoring group in SAMs, offering a pathway to achieve efficient and stable PSCs.

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Spontaneous decoration of ionic compounds at perovskite interfaces to achieve 23.38% efficiency with 85% fill factor in NiO -based perovskite solar cells

Cited by 10 publications

References 51 publications

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

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

A simple passivation strategy of Na-dithienylethene for highly efficient and stable perovskite solar cells

A Fluorination Strategy and Low‐Acidity Anchoring Group in Self‐Assembled Molecules for Efficient and Stable Inverted Perovskite Solar Cells

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