Low-temperature plasma-enhanced atomic layer deposition of tin oxide electron selective layers for highly efficient planar perovskite solar cells

Wang, Changlei; Zhao, Dewei; Grice, Corey R.; Liao, Wei‐Qiang; Yu, Yue; Cimaroli, Alexander J.; Shrestha, Niraj; Roland, Paul J.; Chen, Jing; Yu, Zhenhua; Liu, Pei; Cheng, Nian; Ellingson, Randy J.; Zhao, Xingzhong; Yan, Yanfa

doi:10.1039/c6ta04503k

Cited by 212 publications

(185 citation statements)

References 55 publications

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“…Similar as other metal oxide like TiO 2 and ZnO, SnO 2 can form strong electronic coupling with fullerene monolayer to adjust the surface properties of SnO 2 , such as passivating surface defects, reducing ion migration. By modification of SnO 2 surface with a C 60 ‐SAM, Jen and co‐workers obtained PCE of 15% with negligible hysteresis, and similar phenomenon was observed by Yan and co‐workers . Although the C 60 ‐SAM is efficient, it must be noted that the self‐assemble monolayer usually takes over long time for anchoring, which is inconvenient for future mass production.…”

Section: Modification Of Sno2supporting

confidence: 56%

SnO₂: A Wonderful Electron Transport Layer for Perovskite Solar Cells

Jiang

Zhang

You

2018

Small

683

498

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The highest power conversion efficiency of perovskite solar cells is beyond 22%. Charge transport layers are found to be critical for device performance and stability. A traditional electron transport layer (ETL), such as TiO , is not very efficient for charge extraction at the interface, especially in planar structure. In addition, the devices using TiO suffer from serious degradation under ultraviolet illumination. SnO owns a better band alignment with the perovskite absorption layer and high electron mobility, which is helpful for electron extraction. In this Review, recent progresses in efficient and stable perovskite solar cells using SnO as ETL are summarized.

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Section: Modification Of Sno2supporting

confidence: 56%

SnO₂: A Wonderful Electron Transport Layer for Perovskite Solar Cells

Jiang

Zhang

You

2018

Small

683

498

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“…For relatively thin TET (around 30 nm) coating, the surface topography is also flattened, although to a less extent, resulting in a slightly higher roughness of 3.97 nm, compared with thick spiro‐OMeTAD coating. The functionalities of other layers can be found in our previous publications . Figure b shows the energy level diagram of our PVSCs with TET or spiro‐OMeTAD HSLs.…”

Section: Resultsmentioning

confidence: 99%

A New Hole Transport Material for Efficient Perovskite Solar Cells With Reduced Device Cost

et al. 2017

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To realize commercialization of perovskie solar cell (PVSC) technology, it is essential to reduce the device costs while maintaining high power conversion efficiencies (PCEs). So far, the high cost of the most commonly used hole selective material, 2,2′,7,7′‐Tetrakis (N,N‐di‐p‐methoxyphenylamino)‐9,9′‐spirobifluorene (spiro‐OMeTAD), for high‐PCE PVSCs presents a significant obstacle for device cost reduction. In this work, the synthesis and characterization of a new spiro‐OMeTAD derivative hole selective material, 2,6,14‐tris(5′‐(N,N‐bis(4‐methoxyphenyl)aminophenol‐4‐yl)‐3,4‐ethylenedioxythiophen‐2‐yl)‐triptycene (TET) is reported. TET features a three‐dimensional structure consisting of a triptycene core and triarylamine arms linked by 3,4‐ethylenedioxythiophene, facilitating efficient hole transport. Planar PVSCs using TET hole selective layers (HSLs) achieved high fill factors of over 81% and steady‐state efficiencies of up to 18.6%, comparable with that (19.0%) of PVSC using spiro‐OMeTAD HSL. Importantly, the hereby reported efficient PVSCs can be produced with very thin TET HSLs (about 30 nm). Considering the lower laboratory synthesis and purification cost ($123 vs. $500 g−1) and thinner HSL (30 vs. 200 nm), the cost for TET on a unit area of one device is 25 times lower than that for high‐purity spiro‐OMeTAD. The device with TET HSL shows good stability under continuous illumination. Therefore, this work makes a significant step forward toward the commercialization of the emerging PVSC technology.

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Section: Flexible Perovskite Solar Cellsmentioning

confidence: 99%

Flexible and Stretchable Perovskite Solar Cells: Device Design and Development Methods

Zhang

Zheng

2018

Small Methods

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Flexible and stretchable solar cells have attracted much attention in both the academic and industrial communities due to their huge application potential in many areas, such as buildings, decoration, transportation, fashion, and portable and wearable electronics. In recent years, perovskite solar cells (PSCs) have emerged as the most promising photovoltaic technology, simultaneously offering high efficiency, light weight, low cost, low‐temperature and solution‐processing ability, and material flexibility, which are essential for flexible and stretchable applications. Here, a detailed review is presented on the development of flexible and stretchable PSCs, in terms of the choices of active, interfacial, conductive, and substrate materials, as well as device structures. First, some fundamental principles of PSCs regarding their suitability for flexible and stretchable applications are introduced. Then, the developments and evolving methods of several important materials of flexible devices, including flexible and stretchable substrates, electrodes, and interfacial layers, are summarized. The design of the device structure, which is directly related to the performance in flexibility and stretchability, is also discussed. Finally, conclusions are presented and some promising research directions for flexible and stretchable PSCs in the future are highlighted.

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Low-temperature plasma-enhanced atomic layer deposition of tin oxide electron selective layers for highly efficient planar perovskite solar cells

Abstract: PEALD deposition was used to reduce the effective deposition temperature of SnO2 electron selective layers without compromising the performance of perovskite solar cells.

Cited by 212 publications

References 55 publications

SnO₂: A Wonderful Electron Transport Layer for Perovskite Solar Cells

SnO₂: A Wonderful Electron Transport Layer for Perovskite Solar Cells

A New Hole Transport Material for Efficient Perovskite Solar Cells With Reduced Device Cost

Flexible and Stretchable Perovskite Solar Cells: Device Design and Development Methods

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Low-temperature plasma-enhanced atomic layer deposition of tin oxide electron selective layers for highly efficient planar perovskite solar cells

Abstract: PEALD deposition was used to reduce the effective deposition temperature of SnO2 electron selective layers without compromising the performance of perovskite solar cells.

Cited by 212 publications

References 55 publications

SnO2: A Wonderful Electron Transport Layer for Perovskite Solar Cells

SnO2: A Wonderful Electron Transport Layer for Perovskite Solar Cells

A New Hole Transport Material for Efficient Perovskite Solar Cells With Reduced Device Cost

Flexible and Stretchable Perovskite Solar Cells: Device Design and Development Methods

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SnO₂: A Wonderful Electron Transport Layer for Perovskite Solar Cells

SnO₂: A Wonderful Electron Transport Layer for Perovskite Solar Cells