Grain boundary passivation with triazine-graphdiyne to improve perovskite solar cell performance

Chen, Siqi; Pan, Qingyan; Li, Jiang-Sheng; Zhao, Chengjie; Guo, Xin; Zhao, Yingjie; Jiu, Tonggang

doi:10.1007/s40843-020-1324-8

Cited by 30 publications

(28 citation statements)

References 40 publications

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“…Simultaneously, there are no obvious diffraction peak shifts, which signifies that SDBS does not insert in the MAPbI 3 crystal lattice and not participate in formation of MAPbI 3 lattice, but only probably exists at the GBs. [ 56 ] Therefore, the bandgap of MAPbI 3 perovskite does not change on account of SDBS additive, as displayed in UV–vis absorption spectra (Figure 3c) and the Tauc plot of the absorption spectra (Figure S3, Supporting Information).…”

Section: Resultsmentioning

confidence: 95%

Surfactant Sodium Dodecyl Benzene Sulfonate Improves the Efficiency and Stability of Air‐Processed Perovskite Solar Cells with Negligible Hysteresis

Zhang

Tang

et al. 2020

Solar RRL

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The device performance of organic–inorganic hybrid halide perovskite solar cells (PSCs) is highly dependent on the quality of perovskite layer. Herein, a multifunctional chemical additive strategy is reported to simultaneously improve the efficiency and stability of fully air‐processed PSCs. The planner methylammonium lead trihalide (MAPbI3)‐based PSCs incorporating sodium dodecyl benzene sulfonate (SDBS) exhibit a champion power conversion efficiency (PCE) of 19.20% and negligible hysteresis, which is one of the top efficiencies of MAPbI3‐based PSCs made in air. The increased efficiency is due to the reduction of defects and inhibition of ion migration in the perovskite films. Furthermore, the enhancement of device performance and stability can also be ascribed to highly preferred and efficient perovskite crystals protecting the perovskite films from humidity. The corresponding unencapsulated device retains 92.34% of its initial efficiency after 90 days (>2100 h) storage in air and maintains 85.20% of its original PCE after being exposed to 85 °C for 27 h. The results indicate that SDBS is a promising chemical additive to enhance the performance of air‐processed PSCs for future applications.

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Section: Resultsmentioning

confidence: 95%

Surfactant Sodium Dodecyl Benzene Sulfonate Improves the Efficiency and Stability of Air‐Processed Perovskite Solar Cells with Negligible Hysteresis

Zhang

Tang

et al. 2020

Solar RRL

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“…[1][2][3][4] Nowadays, the certified record power conversion efficiency (PCE) of perovskite solar cells (PSCs) has been boosted from 3.8% to 25.5%, [5,6] benefitting from great endeavors focusing on interface engineering, composition modulation, solvent engineering, crystallinity regulation, etc. [7][8][9] As one of extensively used architectures, the typical planar-type PSC comprises transparent conductive substrate, compact electron transport layer (ETL), perovskite absorber layer, hole transport layer (HTL), and metal electrode. [10][11][12] Thereinto, ETL plays a critical role in extracting and transport electrons from perovskite materials to conducting substrate.…”

mentioning

confidence: 99%

Colloidal SnO₂‐Assisted CdS Electron Transport Layer Enables Efficient Electron Extraction for Planar Perovskite Solar Cells

Zhou

Zhu

et al. 2021

Solar RRL

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Organic-inorganic hybrid perovskite materials have gained remarkable attention in the photovoltaic community due to their superior optical and electrical properties, including high carrier mobility, large light absorption coefficient, tunable bandgap, low trap density, etc. [1][2][3][4] Nowadays, the certified record power conversion efficiency (PCE) of perovskite solar cells (PSCs) has been boosted from 3.8% to 25.5%, [5,6] benefitting from great endeavors focusing on interface engineering, composition modulation, solvent engineering, crystallinity regulation, etc. [7][8][9] As one of extensively used architectures, the typical planar-type PSC comprises transparent conductive substrate, compact electron transport layer (ETL), perovskite absorber layer, hole transport layer (HTL), and metal electrode. [10][11][12] Thereinto, ETL plays a critical role in extracting and transport electrons from perovskite materials to conducting substrate. Hence, it is crucial to design high-quality ETLs with outstanding electron extraction capability for high-performance PSCs. [13,14] It is known that TiO 2 serves as a conventional widely used ETL that delivers PSCs with efficiencies >20%. [15,16] However, the preparation of TiO 2 ETLs usually suffers from high-temperature sintering processes (>450 C); moreover, the low electron mobility and high-density oxygen vacancy trap states of TiO 2 also restrict the further development of TiO 2 -based PSCs. [17,18] Under such circumstances, researchers are dedicated to explore more promising low-temperature processed ETLs for PSCs, such as SnO 2 , CdS, ZnS, SnS 2 , etc. [19][20][21][22] Of these ETLs, CdS shows unique advantages, including: 1) CdS thin films

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“…It was suggested that balanced charge distribution in the C=N bond in the triazine ring promotes stronger interaction with Pb 2+ , resulting in very tight contact between these two materials. This, in turn, did not allow the ion migration on the surface and successfully passivated grain boundaries [56]. Similarly, graphitic carbon nitride addition also resulted in good morphology due to highly compact bonding between Pb 2+ and N of C=N that further endorsed to achieve power conversion efficiencies (PCEs) up to 21.1% (aperture 0.16 cm 2 ) and 19.5% (aperture 1.0 cm 2 ), featuring an open-circuit voltage of 1.16 V (corresponding to a slight voltage loss of 0.39 V), and improved operational device stability (~90% initial efficiency retained after constant one sun illumination for 500 h) [57,58].…”

Section: Cyano/nitrile Additivesmentioning

confidence: 99%

“…Subsequently, it was observed that the cyano group-containing N atom could be equally effective to passivate grain boundaries [56]. Triazine-graphdiyne (Tra-GD) is a graphene-like material that consists of pyridine-like nitrogen in the highly conjugated framework.…”

Section: Cyano/nitrile Additivesmentioning

confidence: 99%

The Progress of Additive Engineering for CH3NH3PbI3 Photo-Active Layer in the Context of Perovskite Solar Cells

Mangrulkar

Stevenson

2021

Crystals

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Methylammonium lead triiodide (CH3NH3PbI3/MAPbI3) is the most intensively explored perovskite light-absorbing material for hybrid organic–inorganic perovskite photovoltaics due to its unique optoelectronic properties and advantages. This includes tunable bandgap, a higher absorption coefficient than conventional materials used in photovoltaics, ease of manufacturing due to solution processability, and low fabrication costs. In addition, the MAPbI3 absorber layer provides one of the highest open-circuit voltages (Voc), low Voc loss/deficit, and low exciton binding energy, resulting in better charge transport with decent charge carrier mobilities and long diffusion lengths of charge carriers, making it a suitable candidate for photovoltaic applications. Unfortunately, MAPbI3 suffers from poor photochemical stability, which is the main problem to commercialize MAPbI3-based perovskite solar cells (PSCs). However, researchers frequently adopt additive engineering to overcome the issue of poor stability. Therefore, in this review, we have classified additives as organic and inorganic additives. Organic additives are subclassified based on functional groups associated with N/O/S donor atoms; whereas, inorganic additives are subcategorized as metals and non-metal halide salts. Further, we discussed their role and mechanism in terms of improving the performance and stability of MAPbI3-based PSCs. In addition, we scrutinized the additive influence on the morphology and optoelectronic properties to gain a deeper understanding of the crosslinking mechanism into the MAPbI3 framework. Our review aims to help the research community, by providing a glance of the advancement in additive engineering for the MAPbI3 light-absorbing layer, so that new additives can be designed and experimented with to overcome stability challenges. This, in turn, might pave the way for wide scale commercial use.

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Grain boundary passivation with triazine-graphdiyne to improve perovskite solar cell performance

Cited by 30 publications

References 40 publications

Surfactant Sodium Dodecyl Benzene Sulfonate Improves the Efficiency and Stability of Air‐Processed Perovskite Solar Cells with Negligible Hysteresis

Surfactant Sodium Dodecyl Benzene Sulfonate Improves the Efficiency and Stability of Air‐Processed Perovskite Solar Cells with Negligible Hysteresis

Colloidal SnO₂‐Assisted CdS Electron Transport Layer Enables Efficient Electron Extraction for Planar Perovskite Solar Cells

The Progress of Additive Engineering for CH3NH3PbI3 Photo-Active Layer in the Context of Perovskite Solar Cells

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Grain boundary passivation with triazine-graphdiyne to improve perovskite solar cell performance

Cited by 30 publications

References 40 publications

Surfactant Sodium Dodecyl Benzene Sulfonate Improves the Efficiency and Stability of Air‐Processed Perovskite Solar Cells with Negligible Hysteresis

Surfactant Sodium Dodecyl Benzene Sulfonate Improves the Efficiency and Stability of Air‐Processed Perovskite Solar Cells with Negligible Hysteresis

Colloidal SnO2‐Assisted CdS Electron Transport Layer Enables Efficient Electron Extraction for Planar Perovskite Solar Cells

The Progress of Additive Engineering for CH3NH3PbI3 Photo-Active Layer in the Context of Perovskite Solar Cells

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Colloidal SnO₂‐Assisted CdS Electron Transport Layer Enables Efficient Electron Extraction for Planar Perovskite Solar Cells