Performance Enhancement of Inverted Perovskite Solar Cells Based on Smooth and Compact PC<sub>61</sub>BM:SnO<sub>2</sub> Electron Transport Layers

Wang, Yao; Duan, Chenghao; Li, Jiang-Sheng; Han, Wei; Zhao, Min; Yao, Lili; Wang, Yuanyuan; Yan, Chao‐Guo; Jiu, Tonggang

doi:10.1021/acsami.8b03444

Cited by 50 publications

(45 citation statements)

References 52 publications

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“…In the same way, the electron flow barriers caused by deep-level native defects of SnO 2 were reported to be reduced by PC 61 BM. [80] Therefore, PC 61 BM:SnO 2 electron transport layers can inhibit both of the defects in PC 61 BM and SnO 2 layers which contribute to the electron transport enhancement and decrease the recombination loss. For device completion, the cathode (Ag/P3HT/CH 3 NH 3 PbI 3 ) and anode (Carbon yarn/SnO 2 -PCBM) yarns were twisted, as shown in Figure 6a.…”

Section: Perovskite Solar Yarn Assembling and Characterizationmentioning

confidence: 99%

Flexible Solar Yarns with 15.7% Power Conversion Efficiency, Based on Electrospun Perovskite Composite Nanofibers

Balilonda

Ali

et al. 2020

Solar RRL

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A flexible perovskite solar yarn with an impressive active lifetime (>216 h) and an exceptional photon conversion efficiency is prepared under ordinary conditions. The champion device demonstrates an average linear mass density of 0.89 mg cm−1 and can be bent over a loop diameter of 2.5 mm, with a negligible efficiency loss. Photoactive nanofibers composed of a polyvinylpyrrolidone (PVP) central strain and a perovskite phase on the surface (with average grain size of 275 ± 14.3 nm), are prepared by electrospinning, at 18 kV, relative humidity of 75%, and a temperature of 25 °C. This bilayered configuration promises superior mechanical strength and flexibility, together with an excellent photovoltaic character, compared with their dip coated counterparts. Photoactive perovskite nanofibers are incorporated into a plied‐solar yarn, with an organic hole‐conductive layer, poly(3‐hexylthiophene‐2,5‐diyl)‐coated on silver yarn electrode, and a composite electron conductive layer, phenyl‐C61‐butyric acid methyl ester (PC61BM)‐SnO2 coated on a carbon yarn. An individual double‐twisted solar yarns yields 15.7% champion power conversion efficiency, while a 30.5 mm × 30.5 mm active area of plain‐woven fabric generates a maximum power density of 1.26 mW cm−2 under one sun (1000 W m−2) solar illumination.

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Section: Perovskite Solar Yarn Assembling and Characterizationmentioning

confidence: 99%

Flexible Solar Yarns with 15.7% Power Conversion Efficiency, Based on Electrospun Perovskite Composite Nanofibers

Balilonda

Ali

et al. 2020

Solar RRL

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“…Chen 等 [94] 使用 CoSe 掺杂 PCBM 作为电子传输层, 将 CoSe 引入 PCBM 层改善了电子传输层的导电性并降低了光致发光强度, 从而增强了界面电子提取并降低了钙钛矿/ETM 界面处的电子转移电阻, 基于 NiO/CH 3 NH 3 PbI 3 /PCBM:CoSe/Ag 的器件获得了 12.5% 的光电转化效率 . Wang 等 [20] 将 PC 61 [15] 采用 n 型聚合物材料 F8TBT 对 PCBM 进行掺杂, 掺杂后在钙钛矿层上形成连续且覆盖度良好的薄膜 , 基于 PEDOT:PSS/MAPbI 3 /PCBM:F8TBT/Ag 结构的器件光电转化效率达到 20.6%.…”

Section: 钙钛矿活性层unclassified

Research Progress of Inverted Perovskite Solar Cells

Yang¹,

Zhu²,

Lin³

et al. 2019

Acta Chim. Sinica

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Since the introduction of perovskite solar cells in 2009, perovskite solar cells have developed rapidly due to their low-cost and high theoretical photoelectric conversion efficiency. Among them, the inverted structure of perovskite solar cells has received more and more attention due to its good stability and low hysteresis effect. Since its inception in 2013, its photoelectric conversion efficiency has rapidly increased from the initial 3.9% to 21.5%. However, compared with the traditional upright structure perovskite solar cells, there is still a gap in the photoelectric conversion efficiency of inverted perovskite solar cells. Due to the nature of the organic materials used, perovskites are more severely affected by moisture in the air environment. They are heavily dependent on nitrogen protection during device manufacturing. In the future, if perovskite solar cells are put into production, the fully enclosed waterless environment will obviously increase the production costs. At the same time, the development of large-area preparation technology is still a difficult problem to be solved. The development of inverted perovskite solar cells, the selection of carrier transport materials, interface optimization, and the development of flexible devices are systematically reviewed in this paper. For example, PEDOT:PSS was doped by GeO 2 and DMSO, and PEDOT:PSS was modified by MoO 3 and GO to improve its work function, acidity and hygroscopicity. A NiO x dense layer is usually doped with Mg 2＋ , Li ＋ and Cs 4＋ to increase its conductivity, which can be prepared by different methods such as magnetron sputtering and sol-gel method. The PCBM interface is modified by C 60 , BCP, LiF etc., to enhance its ohmic contact with the metal counter electrode. And the PCBM is doped by graphene, CoSe, SnO 2 etc., to reduce the charge recombination caused by the interfacial resistance and the defects of the perovskite film. This paper would provide a way to obtain a high efficiency inverted perovskite solar cells by structure and material optimization. And it also give insights into the general rules for preparing large area and flexible devices.

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“…Furthermore, owing to the advantage of negligible hysteresis, PSCs with inverted configuration have attracted extensive consideration, thereby attaining high PCEs of over 20% (the photovoltaic parameters of state‐of‐the‐art planar inverted PSCs are summarized in Table S1, Supporting Information). [ 15–25 ]…”

Section: Introductionmentioning

confidence: 99%

Gaining Insight into the Effect of Organic Interface Layer on Suppressing Ion Migration Induced Interfacial Degradation in Perovskite Solar Cells

Ning

Zhu

Zhao

et al. 2020

Adv Funct Materials

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Ion migration induced interfacial degradation is a detrimental factor for the stability of perovskite solar cells (PSCs) and hence requires special attention to address this issue for the development of efficient PSCs with improved stability. Here, an “S‐shaped, hook‐like” organic small molecule, naphthalene diimide derivative (NDI‐BN), is employed as a cathode interface layer (CIL) to tailor the [6,6]‐phenylC61‐butyric acid methylester (PCBM)/Ag interface in inverted PSCs. By realizing enhanced electron extraction capability via the incorporation of NDI‐BN, a peak power conversion efficiency of 21.32% is achieved. Capacitance–voltage measurements and X‐ray photoelectron spectroscopy analysis confirmed an obvious role of this new organic CIL in successfully blocking ionic diffusion pathways toward the Ag cathode, thereby preventing interfacial degradation and improving device stability. The molecular packing motif of NDI‐BN further unveils its densely packed structure with π–π stacking force which has the ability to effectually hinder ion migration. Furthermore, theoretical calculations reveal that intercalation of decomposed perovskite species into the NDI clusters is considerably more difficult compared with the PCBM counterparts. This substantial contrast between NDI‐BN and PCBM molecules in terms of their structures and packing fashion determines the different tendencies of ion migration and unveils the superior potential of NDI‐BN in curtailing interfacial degradation.

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Performance Enhancement of Inverted Perovskite Solar Cells Based on Smooth and Compact PC₆₁BM:SnO₂ Electron Transport Layers

Cited by 50 publications

References 52 publications

Flexible Solar Yarns with 15.7% Power Conversion Efficiency, Based on Electrospun Perovskite Composite Nanofibers

Flexible Solar Yarns with 15.7% Power Conversion Efficiency, Based on Electrospun Perovskite Composite Nanofibers

Research Progress of Inverted Perovskite Solar Cells

Gaining Insight into the Effect of Organic Interface Layer on Suppressing Ion Migration Induced Interfacial Degradation in Perovskite Solar Cells

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Performance Enhancement of Inverted Perovskite Solar Cells Based on Smooth and Compact PC61BM:SnO2 Electron Transport Layers

Cited by 50 publications

References 52 publications

Flexible Solar Yarns with 15.7% Power Conversion Efficiency, Based on Electrospun Perovskite Composite Nanofibers

Flexible Solar Yarns with 15.7% Power Conversion Efficiency, Based on Electrospun Perovskite Composite Nanofibers

Research Progress of Inverted Perovskite Solar Cells

Gaining Insight into the Effect of Organic Interface Layer on Suppressing Ion Migration Induced Interfacial Degradation in Perovskite Solar Cells

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Product

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About

Performance Enhancement of Inverted Perovskite Solar Cells Based on Smooth and Compact PC₆₁BM:SnO₂ Electron Transport Layers