Suppressed Decomposition of Perovskite Film on ZnO Via a Self‐Assembly Monolayer of Methoxysilane

Liu, Detao; She, Zhun; Zheng, Hualin; Zhang, Peng; Wang, Feng; Wu, Jiang; Zhi, Chen; Li, Shibin

doi:10.1002/solr.201800240

Cited by 22 publications

(11 citation statements)

References 35 publications

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“…The trap-assisted non-radiative recombination intensity often depends on the defect density in perovskite films and most of the defects are spread on the surface and boundary of perovskite crystal grains due to the atomic vacancies [7,9]. Therefore, perovskite films with less crystal grain boundary area contribute to the better photovoltaic performance of PSCs [10][11][12]. The perovskite films with less crystal grain boundary area can be obtained via increasing the crystal grain size.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Crystallinity of Triple-Cation Perovskite Film via Doping NH4SCN

Liu

Chen

et al. 2019

Nanoscale Res Lett

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The trap-state density in perovskite films largely determines the photovoltaic performance of perovskite solar cells (PSCs). Increasing the crystal grain size in perovskite films is an effective method to reduce the trap-state density. Here, we have added NH 4 SCN into perovskite precursor solution to obtain perovskite films with an increased crystal grain size. The perovskite with increased crystal grain size shows a much lower trap-state density compared with reference perovskite films, resulting in an improved photovoltaic performance in PSCs. The champion photovoltaic device has achieved a power conversion efficiency of 19.36%. The proposed method may also impact other optoelectronic devices based on perovskite films.

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Section: Introductionmentioning

confidence: 99%

Enhanced Crystallinity of Triple-Cation Perovskite Film via Doping NH4SCN

Liu

Chen

et al. 2019

Nanoscale Res Lett

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“…In order to recapitulate these dynamic environments, several materials have been developed, which enable the reversible modulation of mechanical properties in response to chemical or optical stimuli. [3a–c,4] Since light as stimulus offers superior spatiotemporal control compared to classical chemical inducers, materials with reversibly adjustable mechanical properties based on sequential photodegradation and photoinitiated crosslinking, cis – trans isomerization of azobenzene, guest–host interaction of azobenzene and β‐cyclodextrin (all UV and violet light) as well as on the photoreceptors UVR8 (UV light), LOV2 (blue light), or Dronpa (violet and cyan light) were developed. However, materials that allow fast and fully reversible adjustment of mechanical properties under cell culture conditions with cell‐compatible and low energy red light are still lacking.…”

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confidence: 99%

Phytochrome‐Based Extracellular Matrix with Reversibly Tunable Mechanical Properties

et al. 2019

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The mechanical properties of the extracellular environment govern key cellular decision-making processes such as proliferation, differentiation, or migration. [1] Thus, analyzing how cells gauge and interact with their mechanical environment is critical not only for understanding physiological and pathological processes but also for engineering cell and tissue growth and differentiation in regenerative medicine. [2] Although studies using passive elastic or viscoelastic materials have revealed valuable information about cell-matrix interactions, matrices with adjustable mechanical properties more closely reflect the dynamic environments many cells are exposed to in a living organism. [3] In order to recapitulate these dynamic environments, several materials have been developed, which enable the Interrogation and control of cellular fate and function using optogenetics is providing revolutionary insights into biology. Optogenetic control of cells is achieved by coupling genetically encoded photoreceptors to cellular effectors and enables unprecedented spatiotemporal control of signaling processes. Here, a fast and reversibly switchable photoreceptor is used to tune the mechanical properties of polymer materials in a fully reversible, wavelengthspecific, and dose-and space-controlled manner. By integrating engineered cyanobacterial phytochrome 1 into a poly(ethylene glycol) matrix, hydrogel materials responsive to light in the cell-compatible red/far-red spectrum are synthesized. These materials are applied to study in human mesenchymal stem cells how different mechanosignaling pathways respond to changing mechanical environments and to control the migration of primary immune cells in 3D. This optogenetics-inspired matrix allows fundamental questions of how cells react to dynamic mechanical environments to be addressed. Further, remote control of such matrices can create new opportunities for tissue engineering or provide a basis for optically stimulated drug depots. BiomaterialsThe ORCID identification number(s) for the author(s) of this article can be found under https://doi.

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“…The highest PCE of PSCs based on ZnO is about 21% which is very close to the best efficiency of PSCs . However, a perovskite film is decomposed easily on a pristine ZnO film under illumination or high‐temperature condition . Besides the above metal oxides, other metal oxides such as NbO x , WO x , BaSnO 3 , and CeO x , also have been employed as ETL materials, but these materials have not caught a lot of attention .…”

Section: Introductionmentioning

confidence: 97%

SnO₂‐Based Perovskite Solar Cells: Configuration Design and Performance Improvement

Liu

Wang

et al. 2019

Solar RRL

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Organic‐inorganic hybrid perovskite solar cells (PSCs) have developed rapidly in recent years owing to the low cost and high power conversion efficiency achieved. The excellent performance of PSCs is attributed to the superior electrical properties of each layer, including the electron transport layer (ETL), light‐harvest layer, hole transport layer. As one of the most promising ETL materials for PSCs, SnO2 shows excellent transmission, an appropriate energy band gap, a deep conduction band level, and high electron mobility, leading to efficient electron extraction and transport. Here, recent advancements in the PSCs with SnO2 ETLs and endeavors aimed at improving the performance of this photovoltaic device are reviewed. Several typical configurations of SnO2 based PSCs are discussed, including the planar structure, mesoporous structure, inverted structure and flexible PSCs. The efforts of modification and composite SnO2 with other metal oxides are also assessed. Finally, an overview of the perspectives and challenges for the future of SnO2 based PSCs is provided.

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Suppressed Decomposition of Perovskite Film on ZnO Via a Self‐Assembly Monolayer of Methoxysilane

Cited by 22 publications

References 35 publications

Enhanced Crystallinity of Triple-Cation Perovskite Film via Doping NH4SCN

Enhanced Crystallinity of Triple-Cation Perovskite Film via Doping NH4SCN

Phytochrome‐Based Extracellular Matrix with Reversibly Tunable Mechanical Properties

SnO₂‐Based Perovskite Solar Cells: Configuration Design and Performance Improvement

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Suppressed Decomposition of Perovskite Film on ZnO Via a Self‐Assembly Monolayer of Methoxysilane

Cited by 22 publications

References 35 publications

Enhanced Crystallinity of Triple-Cation Perovskite Film via Doping NH4SCN

Enhanced Crystallinity of Triple-Cation Perovskite Film via Doping NH4SCN

Phytochrome‐Based Extracellular Matrix with Reversibly Tunable Mechanical Properties

SnO2‐Based Perovskite Solar Cells: Configuration Design and Performance Improvement

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SnO₂‐Based Perovskite Solar Cells: Configuration Design and Performance Improvement