Interfacial engineering of sputtered NiOx for enhancing efficiency and stability of inverted perovskite solar cells

Zhang, Wei; Shen, Honglie; Yan, Pingyuan; Zhang, Jingzhe

doi:10.1016/j.solener.2022.11.014

Cited by 9 publications

(5 citation statements)

References 68 publications

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“…In the most advanced studies, self-assembled monolayers (SAMs) and C 60 have been widely used as the hole transport layer (HTL) and electron transport layer (ETL), respectively, and have achieved remarkable PCEs. [35][36][37][38][39][40][41] Surface passivation is necessary to reduce the surface defects and improve the heterojunction contact properties of perovskites. [42,43] In this study, DMI was used as a passivation material (molecular formula see Figure S12, Supporting Information) to postprocess the surfaces of the SC perovskite films.…”

Section: Resultsmentioning

confidence: 99%

Flexible Perovskite Solar Cells on Ultra‐Thin Stainless‐Steel with a Power‐to‐Weight Ratio over 3000 W kg⁻¹

Zhou,

Xu,

et al. 2023

Solar RRL

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Ultra‐thin stainless‐steel substrates with excellent water‐oxygen barrier properties and high thermal and electrical conductivities are suitable for the fabrication of lightweight and flexible perovskite solar cells (FPSCs). However, the deposition of dense perovskite films on stainless steel by the solution method is crucial because short circuits caused by perovskite holes are fatal to parallel structures. Herein, a single crystal (SC) is incorporated into the precursor solution to reduce the formation of holes in perovskite films on smooth stainless‐steel substrates. Additionally, a magnetic method is developed based on the properties of stainless steel to fix and fabricate FPSCs nondestructively on ultra‐thin stainless‐steel films with a thickness as low as 5 μm. Furthermore, 4,6‐dimethyl‐2‐mercaptopyrimidine (DMI) was introduced to passivate the surface of the perovskite film, optimizing the contact properties of the perovskite heterojunction and adjusting the energy level of the perovskite/C60 interface. Finally, ultra‐thin FPSCs achieved a champion power conversion efficiency (PCE) of 20.24% on an active area of 1.012 cm2 and a power‐to‐weight ratio over 3000 W kg−1. Moreover, under continuous illumination, the stainless‐steel substrates exhibited better photothermal stability than the polymer substrates. This method provides a basis for the fabrication of lightweight, low‐cost, and large‐area FPSCs.

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Section: Resultsmentioning

confidence: 99%

Flexible Perovskite Solar Cells on Ultra‐Thin Stainless‐Steel with a Power‐to‐Weight Ratio over 3000 W kg⁻¹

Zhou,

Xu,

et al. 2023

Solar RRL

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“…In 2013, Malinkiewicz et al inserted an interlayer between the HTL and perovskite layers to improve charge recombination at the interface between perovskite and PEDOT:PSS . After this, organic materials, inorganic materials, and SAMs have been tried as interlayers to optimize the interface between perovskite/HTL for more efficient hole transfer and better interfacial contact. ,, In recent years, low-cost, thermally, and chemically stable inorganic nickel oxide (NiO x ) is one of the popular choices of hole-transfer layer materials for high-performance p-i-n PSCs. − Also, NiO x -based IPSCs are highly compatible for the development of flexible or tandem solar cells. Nevertheless, high-valence Ni and active hydroxyl groups can decompose perovskite, leading to a hole extraction barrier at the NiO x /perovskite interface.…”

Section: The Interface Engineering Of Perovskite/htl Interfacementioning

confidence: 99%

Key Roles of Interfaces in Inverted Metal-Halide Perovskite Solar Cells

Li,

Wang,

et al. 2024

ACS Nano

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Metal-halide perovskite solar cells (PSCs), an emerging technology for transforming solar energy into a clean source of electricity, have reached efficiency levels comparable to those of commercial silicon cells. Compared with other types of PSCs, inverted perovskite solar cells (IPSCs) have shown promise with regard to commercialization due to their facile fabrication and excellent optoelectronic properties. The interlayer interfaces play an important role in the performance of perovskite cells, not only affecting charge transfer and transport, but also acting as a barrier against oxygen and moisture permeation. Herein, we describe and summarize the last three years of studies that summarize the advantages of interface engineering-based advances for the commercialization of IPSCs. This review includes a brief introduction of the structure and working principle of IPSCs, and analyzes how interfaces affect the performance of IPSC devices from the perspective of photovoltaic performance and device lifetime. In addition, a comprehensive summary of various interface engineering approaches to solving these problems and challenges in IPSCs, including the use of interlayers, interface modification, defect passivation, and others, is summarized. Moreover, based upon current developments and breakthroughs, fundamental and engineering perspectives on future commercialization pathways are provided for the innovation and design of next-generation IPSCs.

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“…[2,[11][12][13][14] Among them, non-stoichiometric NiO x , as a wide band gap (3.6-4.0 eV) p-type semiconductor material, has become an important research object for high-performance fPSCs due to appropriate work function, various preparation methods, high hole mobility, and excellent thermal stability. [3,4,[15][16][17][18] Among them, nanocrystalline NiO x (n-NiO x ) materials prepared by the coprecipitation method have attracted more attention owing to their higher carrier mobility and low cost. [19][20][21] N-NiO x is a non-stoichiometric oxide with nickel vacancies to realize the p-type doping.…”

Section: Introductionmentioning

confidence: 99%

How to Stabilize the Current of Efficient Inverted Flexible Perovskite Solar Cells at the Maximum Power Point

Ma,

Peng,

Jiang

et al. 2024

Small

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Inverted flexible perovskite cells (fPSCs) have attracted much attention for their high efficiency and power per weight. Still, the steady–state output is one of the critical factors for their commercialization. In this paper, it is found that the steady–state current of inverted fPSCs based on nickel oxide nanoparticles (n‐NiOx) continuously decreases under light illumination. Conversely, those based on magnetron‐sputtered NiOx (sp‐NiOx) exhibit the opposite result. Based on visualization of ion migration in the photoluminescence (PL) imaging microscopy tests, the discrepancies in the buried surfaces lead to the differences in ion migration in perovskite films, which triggers the temporary instability of the output current of devices during operation. The DFT theoretical calculation and experimental results reveal that NiOx films with different contents of Ni vacancies can modulate the crystallization of the perovskite films on the NiOx surfaces. Tuning the crystallization of the perovskite films is essential to stabilize the output current of fPSCs at a steady state. To demonstrate that, capsaicin is doped into the perovskite solutions to improve the quality of the perovskite buried interface. Finally, the corresponding fPSCs exhibit outstanding efficiency and stability during operation. These results provide valuable scientific guidance for fabricating fPSCs with stable operation under illumination conditions.

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Interfacial engineering of sputtered NiOx for enhancing efficiency and stability of inverted perovskite solar cells

Cited by 9 publications

References 68 publications

Flexible Perovskite Solar Cells on Ultra‐Thin Stainless‐Steel with a Power‐to‐Weight Ratio over 3000 W kg⁻¹

Flexible Perovskite Solar Cells on Ultra‐Thin Stainless‐Steel with a Power‐to‐Weight Ratio over 3000 W kg⁻¹

Key Roles of Interfaces in Inverted Metal-Halide Perovskite Solar Cells

How to Stabilize the Current of Efficient Inverted Flexible Perovskite Solar Cells at the Maximum Power Point

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Interfacial engineering of sputtered NiOx for enhancing efficiency and stability of inverted perovskite solar cells

Cited by 9 publications

References 68 publications

Flexible Perovskite Solar Cells on Ultra‐Thin Stainless‐Steel with a Power‐to‐Weight Ratio over 3000 W kg−1

Flexible Perovskite Solar Cells on Ultra‐Thin Stainless‐Steel with a Power‐to‐Weight Ratio over 3000 W kg−1

Key Roles of Interfaces in Inverted Metal-Halide Perovskite Solar Cells

How to Stabilize the Current of Efficient Inverted Flexible Perovskite Solar Cells at the Maximum Power Point

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Product

Resources

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Flexible Perovskite Solar Cells on Ultra‐Thin Stainless‐Steel with a Power‐to‐Weight Ratio over 3000 W kg⁻¹

Flexible Perovskite Solar Cells on Ultra‐Thin Stainless‐Steel with a Power‐to‐Weight Ratio over 3000 W kg⁻¹