Enhanced UV-light stability of organometal halide perovskite solar cells with interface modification and a UV absorption layer

2017 ◽  
Vol 5 (34) ◽  
pp. 8682-8687 ◽  
Author(s):  
Yue Sun ◽  
Xiang Fang ◽  
Zhijie Ma ◽  
Linjun Xu ◽  
Yongting Lu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Uv Light ◽  
Perovskite Solar Cells ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Interface Modification ◽  
Uv Absorber ◽  
Silane Coupling ◽  
Light Stability ◽  
Organometal Halide Perovskite

Perovskite solar cells with improved UV-stability have been achieved via introducing silane coupling agents onto the surface of c-TiO2 and coating an optimal concentration of UV absorber, UV-234.

scholarly journals Enhanced UV-light stability of planar heterojunction perovskite solar cells with caesium bromide interface modification

2016 ◽  
Vol 9 (2) ◽  
pp. 490-498 ◽  
Author(s):  
Wenzhe Li ◽  
Wei Zhang ◽  
Stephan Van Reenen ◽  
Rebecca J. Sutton ◽  
Jiandong Fan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Uv Irradiation ◽  
Conversion Efficiency ◽  
Uv Light ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Interface Modification ◽  
Light Stability ◽  
Planar Heterojunction

CsBr interface modification simultaneously enhances the device power conversion efficiency and improves the device resilience to UV irradiation.

Simultaneous enhancement in performance and UV-light stability of organic–inorganic perovskite solar cells using a samarium-based down conversion material

2019 ◽  
Vol 7 (1) ◽  
pp. 322-329 ◽  
Author(s):  
Naveed Ur Rahman ◽  
Wasim Ullah Khan ◽  
Wenlang Li ◽  
Shaukat Khan ◽  
Javid Khan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Uv Light ◽  
Perovskite Solar Cells ◽  
Device Performance ◽  
Inorganic Perovskite ◽  
Term Stability ◽  
Long Term Stability ◽  
Light Stability ◽  
Down Conversion

A samarium-based down conversion material was employed to simultaneously improve the device performance and long-term stability of perovskite solar cells.

High-performance mixed-dimensional perovskite solar cells with enhanced stability against humidity, heat and UV light

2018 ◽  
Vol 6 (41) ◽  
pp. 20233-20241 ◽  
Author(s):  
Haiying Zheng ◽  
Guozhen Liu ◽  
Xiaojing Chen ◽  
Bing Zhang ◽  
Ahmed Alsaedi ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Uv Light ◽  
Perovskite Solar Cells ◽  
Light Stability ◽  
Enhanced Stability

By introducing HOCH2CH2NH3I, new MD perovskite solar cells with a high PCE of 18.79% and improved humidity, heat and UV light stability are obtained.

A promising europium-based down conversion material: organic–inorganic perovskite solar cells with high photovoltaic performance and UV-light stability

2019 ◽  
Vol 7 (11) ◽  
pp. 6467-6474 ◽  
Author(s):  
Naveed Ur Rahman ◽  
Wasim Ullah Khan ◽  
Shaukat Khan ◽  
Xiaojie Chen ◽  
Javid Khan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Uv Light ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Inorganic Perovskite ◽  
Device Stability ◽  
Light Stability ◽  
Down Conversion

A europium-based down conversion material enables perovskite solar cells with simultaneous improvement in photovoltaic performance and device stability.

scholarly journals Computational Study of Cresyl Violet Covalently Attached to the Silane Coupling Agents: Application to TiO2-Based Photocatalysts and Dye-Sensitized Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1958
Author(s):  
Tatsuya Takeshita
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Covalent Attachment ◽  
Cresyl Violet ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Dye Sensitized ◽  
Td Dft ◽  
Silane Coupling ◽  
Sensitized Solar Cells

The covalent attachment of photosensitizing dyes to TiO2 using silane coupling agents (SCAs) is a promising strategy for enhancing the photocatalytic activity of TiO2-based photocatalysts and the photovoltaic conversion of dye-sensitized solar cells (DSSCs). This approach can control the geometry and orientation of the photosensitizing dye on the TiO2 surface. In this study, a density functional theory (DFT) and time-dependent DFT (TD-DFT) investigation was carried out on cresyl violet (CV) covalently attached to SCAs with a terminal oxirane group (OTES–Cn) to reveal the influence of OTES–Cn on the geometry of the photosensitizing dyes. The potential of CV covalently attached to OTES–Cn (CV–OTES–Cn) to act as a photosensitizing dye was also analyzed. The hydroxyl group formed by the epoxy-opening reaction between CV and OTES–Cn strongly influenced the geometry of CV–OTES–Cn, which was attributed to a CH–O interaction. Additionally, TD-DFT, frontier molecular orbital and molecular electrostatic potential calculations revealed that CV–OTES–Cn has excellent optical properties and electron injection ability. In particular, the characteristics of the unbent conformation of CV–OTES–Cn are expected to contribute significantly to the photocurrent in TiO2-based photocatalysts and DSSCs. These findings enhance the understanding of the covalent attachment strategy using SCAs and contribute to improving TiO2-based photocatalysts and DSSCs.

scholarly journals Self-Organized Fullerene Interfacial Layer for Efficient and Low-Temperature Processed Planar Perovskite Solar Cells with High UV-Light Stability

2017 ◽  
Vol 4 (8) ◽  
pp. 1700018 ◽  
Author(s):  
Jiangsheng Xie ◽  
Xuegong Yu ◽  
Jiabin Huang ◽  
Xuan Sun ◽  
Yunhai Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Interfacial Layer ◽  
Uv Light ◽  
Perovskite Solar Cells ◽  
Self Organized ◽  
Light Stability

Functionalization of Porous Clay Heterostructures with Silane Coupling Agents

2017 ◽  
Vol 54 (2) ◽  
pp. 341-344
Author(s):  
Anda Ionelia Mihai (Voicu) ◽  
Sorina Alexandra Garea ◽  
Eugeniu Vasile ◽  
Cristina Lavinia Nistor ◽  
Horia Iovu
Keyword(s):  
Pore Volume ◽  
Total Pore Volume ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Porous Clay Heterostructures ◽  
Bet Analysis ◽  
Silane Coupling ◽  
Ftir Spectrometry ◽  
Textural Parameters ◽  
Epoxy Groups

The goal of this paper was to study the modification of porous clay heterostructures (PCHs) with various silane coupling agents. Two commercial coupling agents (3-aminopropyl-triethoxysilane (APTES) and 3-glycidoxypropyl-trimethoxysilane (GPTMS)) with different functional groups (amine and epoxy groups) were used as modifying agents for the PCHs functionalization. The functionalization of PCH with APTES and GPTMS was evaluated by Fourier transform infrared (FTIR) spectrometry, thermogravimetric analysis (TGA), X-Ray Diffractions (XRD) and BET Analysis. FTIR spectra of modified PCHs confirmed the presence of characteristic peaks of silane coupling agents. TGA results highlighted an increase of weight loss for the modified PCHs that was assigned to the degradation of silane coupling agents (APTES and GPTMS) attached to the PCHs. The XRD results showed that the structure of modified PCHs was influenced by the type of the silane coupling agent. The functionalization of PCHs with silane coupling agents was also confirmed by BET analysis. Textural parameters (specific surface area (SBET), total pore volume (Vt )) suggested that the modified PCHs exhibit lower values of SBET and a significant decrease of total pore volume than unmodified PCHs.

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