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  1. Article ; Online: The Rise of Highly Efficient and Stable Perovskite Solar Cells.

    Grätzel, Michael

    Accounts of chemical research

    2017  Volume 50, Issue 3, Page(s) 487–491

    Abstract: Recently, metal halide perovskite solar cells (PSCs) of the general formular ... ...

    Abstract Recently, metal halide perovskite solar cells (PSCs) of the general formular ABX
    Language English
    Publishing date 2017-10-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1483291-4
    ISSN 1520-4898 ; 0001-4842
    ISSN (online) 1520-4898
    ISSN 0001-4842
    DOI 10.1021/acs.accounts.6b00492
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: A Complete Picture of Cation Dynamics in Hybrid Perovskite Materials from Solid-State NMR Spectroscopy.

    Mishra, Aditya / Hope, Michael A / Grätzel, Michael / Emsley, Lyndon

    Journal of the American Chemical Society

    2022  Volume 145, Issue 2, Page(s) 978–990

    Abstract: The organic cations in hybrid organic-inorganic perovskites rotate rapidly inside the cuboctahedral cavities formed by the inorganic lattice, influencing optoelectronic properties. Here, we provide a complete quantitative picture of cation dynamics for ... ...

    Abstract The organic cations in hybrid organic-inorganic perovskites rotate rapidly inside the cuboctahedral cavities formed by the inorganic lattice, influencing optoelectronic properties. Here, we provide a complete quantitative picture of cation dynamics for formamidinium-based perovskites and mixed-cation compositions, which are the most widely used and promising absorber layers for perovskite solar cells today. We use
    Language English
    Publishing date 2022-12-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.2c10149
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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  3. Article: The light and shade of perovskite solar cells.

    Grätzel, Michael

    Nature materials

    2014  Volume 13, Issue 9, Page(s) 838–842

    Language English
    Publishing date 2014-08-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 2088679-2
    ISSN 1476-4660 ; 1476-1122
    ISSN (online) 1476-4660
    ISSN 1476-1122
    DOI 10.1038/nmat4065
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  4. Article ; Online: Electrochemical synthesis of propylene from carbon dioxide on copper nanocrystals.

    Gao, Jing / Bahmanpour, Alimohammad / Kröcher, Oliver / Zakeeruddin, Shaik M / Ren, Dan / Grätzel, Michael

    Nature chemistry

    2023  Volume 15, Issue 5, Page(s) 705–713

    Abstract: The conversion of carbon dioxide to value-added products using renewable electricity would potentially help to address current climate concerns. The electrochemical reduction of carbon dioxide to propylene, a critical feedstock, requires multiple C-C ... ...

    Abstract The conversion of carbon dioxide to value-added products using renewable electricity would potentially help to address current climate concerns. The electrochemical reduction of carbon dioxide to propylene, a critical feedstock, requires multiple C-C coupling steps with the transfer of 18 electrons per propylene molecule, and hence is kinetically sluggish. Here we present the electrosynthesis of propylene from carbon dioxide on copper nanocrystals with a peak geometric current density of -5.5 mA cm
    Language English
    Publishing date 2023-04-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 2464596-5
    ISSN 1755-4349 ; 1755-4330
    ISSN (online) 1755-4349
    ISSN 1755-4330
    DOI 10.1038/s41557-023-01163-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Layered Hybrid Formamidinium Lead Iodide Perovskites: Challenges and Opportunities.

    Milić, Jovana V / Zakeeruddin, Shaik M / Grätzel, Michael

    Accounts of chemical research

    2021  Volume 54, Issue 12, Page(s) 2729–2740

    Abstract: ConspectusHybrid halide perovskite materials have become one of the leading candidates for various optoelectronic applications. They are based on organic-inorganic structures defined by the ... ...

    Abstract ConspectusHybrid halide perovskite materials have become one of the leading candidates for various optoelectronic applications. They are based on organic-inorganic structures defined by the AMX
    Language English
    Publishing date 2021-06-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1483291-4
    ISSN 1520-4898 ; 0001-4842
    ISSN (online) 1520-4898
    ISSN 0001-4842
    DOI 10.1021/acs.accounts.0c00879
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Tailoring passivators for highly efficient and stable perovskite solar cells.

    Zhang, Hong / Pfeifer, Lukas / Zakeeruddin, Shaik M / Chu, Junhao / Grätzel, Michael

    Nature reviews. Chemistry

    2023  Volume 7, Issue 9, Page(s) 632–652

    Abstract: There is an ongoing global effort to advance emerging perovskite solar cells (PSCs), and many of these endeavours are focused on developing new compositions, processing methods and passivation strategies. In particular, the use of passivators to reduce ... ...

    Abstract There is an ongoing global effort to advance emerging perovskite solar cells (PSCs), and many of these endeavours are focused on developing new compositions, processing methods and passivation strategies. In particular, the use of passivators to reduce the defects in perovskite materials has been demonstrated to be an effective approach for enhancing the photovoltaic performance and long-term stability of PSCs. Organic passivators have received increasing attention since the late 2010s as their structures and properties can readily be modified. First, this Review discusses the main types of defect in perovskite materials and reviews their properties. We examine the deleterious impact of defects on device efficiency and stability and highlight how defects facilitate extrinsic degradation pathways. Second, the proven use of different passivator designs to mitigate these negative effects is discussed, and possible defect passivation mechanisms are presented. Finally, we propose four specific directions for future research, which, in our opinion, will be crucial for unlocking the full potential of PSCs using the concept of defect passivation.
    Language English
    Publishing date 2023-07-18
    Publishing country England
    Document type Journal Article ; Review
    ISSN 2397-3358
    ISSN (online) 2397-3358
    DOI 10.1038/s41570-023-00510-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Durable Perovskite Solar Cells with 24.5% Average Efficiency: The Role of Rigid Conjugated Core in Molecular Semiconductors.

    Ren, Ming / Fang, Lingyi / Zhang, Yuyan / Eickemeyer, Felix T / Yuan, Yi / Zakeeruddin, Shaik M / Grätzel, Michael / Wang, Peng

    Advanced materials (Deerfield Beach, Fla.)

    2024  , Page(s) e2403403

    Abstract: Efficient and robust n-i-p perovskite solar cells necessitate superior organic hole-transport materials with both mechanical and electronic prowess. Deciphering the structure-property relationship of these materials is crucial for practical perovskite ... ...

    Abstract Efficient and robust n-i-p perovskite solar cells necessitate superior organic hole-transport materials with both mechanical and electronic prowess. Deciphering the structure-property relationship of these materials is crucial for practical perovskite solar cell applications. Through direct arylation, two high glass transition temperature molecular semiconductors, DBC-ETPA (202 °C) and TPE-ETPA (180 °C) are synthesized, using dibenzo[g,p]chrysene (DBC) and 1,1,2,2-tetraphenylethene (TPE) tetrabromides with triphenylene-ethylenedioxythiophene-dimethoxytriphenylamine (ETPA). In comparison to spiro-OMeTAD, both semiconductors exhibit shallower HOMO energy levels, resulting in increased hole densities (generated by air oxidation doping) and accelerated hole extraction from photoexcited perovskite. Experimental and theoretical studies highlight the more rigid DBC core, enhancing hole mobility due to reduced reorganization energy and lower energy disorder. Importantly, DBC-ETPA possesses a higher cohesive energy density, leading to lower ion diffusion coefficients and higher Young's moduli. Leveraging these attributes, DBC-ETPA is employed as the primary hole-transport layer component, yielding perovskite solar cells with an average efficiency of 24.5%, surpassing spiro-OMeTAD reference cells (24.0%). Furthermore, DBC-ETPA-based cells exhibit superior operational stability and 85 °C thermal storage stability.
    Language English
    Publishing date 2024-04-17
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1474949-X
    ISSN 1521-4095 ; 0935-9648
    ISSN (online) 1521-4095
    ISSN 0935-9648
    DOI 10.1002/adma.202403403
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  8. Article ; Online: Solid-state dye-sensitized solar cells using polymeric hole conductors.

    Vlachopoulos, Nick / Grätzel, Michael / Hagfeldt, Anders

    RSC advances

    2021  Volume 11, Issue 62, Page(s) 39570–39581

    Abstract: The present review presents the application of electronically conducting polymers (conducting polymers) as hole conductors in solid-state dye solar cells (S-DSSCs). At first, the basic principles of dye solar cell operation are presented. The next ... ...

    Abstract The present review presents the application of electronically conducting polymers (conducting polymers) as hole conductors in solid-state dye solar cells (S-DSSCs). At first, the basic principles of dye solar cell operation are presented. The next section deals with the principles of electrochemical polymerisation and its photoelectrochemical variety, the latter being an important, frequently-used technique for generating conducting polymers and hole conductors in DSSCs. Finally, two varieties of S-DSSC configurations, those of dry S-DSSC and of S-DSSCs incorporating a liquid electrolyte, are discussed.
    Language English
    Publishing date 2021-12-13
    Publishing country England
    Document type Journal Article ; Review
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d1ra05911d
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: New Insights into the Interface of Electrochemical Flow Cells for Carbon Dioxide Reduction to Ethylene.

    Ren, Dan / Gao, Jing / Zakeeruddin, Shaik M / Grätzel, Michael

    The journal of physical chemistry letters

    2021  Volume 12, Issue 31, Page(s) 7583–7589

    Abstract: The implementation of an electrochemical flow cell has enabled improved efficiency for ... ...

    Abstract The implementation of an electrochemical flow cell has enabled improved efficiency for CO
    Language English
    Publishing date 2021-08-04
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.1c02043
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  10. Article ; Online: Illumination Time Dependent Learning in Dye Sensitized Solar Cells.

    Tsao, Hoi Nok / Grätzel, Michael

    ACS applied materials & interfaces

    2018  Volume 10, Issue 43, Page(s) 36602–36607

    Abstract: Learning through vision is an essential skill for intelligent machines. In an attempt to implement this highly complex feature at low energy cost, a dye-sensitized solar cell is proposed that learns using illumination time as a cue. Particularly, the ... ...

    Abstract Learning through vision is an essential skill for intelligent machines. In an attempt to implement this highly complex feature at low energy cost, a dye-sensitized solar cell is proposed that learns using illumination time as a cue. Particularly, the device alters its photocurrent and memorizes this change in dependence of light exposure duration. This behavior parallels synaptic learning that also requires continuous or repeated electrical stimuli as triggers. Therefore, such optically learning solar cells may serve as promising building blocks in optoelectronic neural networks, potentially enabling visually learning electronics operating at negligible energy consumption and minimal hardware complexity.
    Language English
    Publishing date 2018-10-18
    Publishing country United States
    Document type Journal Article
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.8b12027
    Database MEDical Literature Analysis and Retrieval System OnLINE

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