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  1. AU="Diao, Jiecheng"
  2. AU="Chandra, Soumyanetra"
  3. AU="Wang, Jinguang"
  4. AU="Jogai, Sanjay"
  5. AU="Singh, Kuljit"
  6. AU="Tran, Phuoc Tien"
  7. AU="Alban Jonchère"
  8. AU="Ravi Varma Aithabathula"
  9. AU="Suter, Martin"
  10. AU="Chugunov, Konstantin V"
  11. AU="Moshkdanian, Ghazale"
  12. AU="Phuangthong, Chelsea"
  13. AU="Schiro, B J"
  14. AU="Chu, Dan"
  15. AU="Muhanna, Adel"
  16. AU="Ankit Mittal"
  17. AU="Dos Santos Costa Maldonado, Izabel Regina"
  18. AU="Mohamed El-Hadidi"
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  20. AU="Cozzolino, Marica"
  21. AU="Bao, Hongwei"
  22. AU="Golling, T."
  23. AU="Young, Jonathan R"
  24. AU="Lee, Jae Young"
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  26. AU="Wiarda, Grant"
  27. AU="Pereira, Naveen"
  28. AU="Garriga, Anna"
  29. AU="PLK. Priyadarsini"
  30. AU="Nicole E. Edgar"
  31. AU=Fredrick Kurt
  32. AU="Rowe, Mike"
  33. AU="Imannezhad, Shima"
  34. AU="DiTullio, Giacomo R"
  35. AU="Padrick, Shae B"
  36. AU="Vachiraarunwong, Arpamas"
  37. AU="Mohammad-Najar, Narges"
  38. AU="Sarica, Kemal"
  39. AU="Lescure, Alain"
  40. AU="Darawan Rinchai"
  41. AU="Sarah K McKenzie"
  42. AU="Joseph Edgar Blais"
  43. AU="Garate, Jose Antonio"

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  1. Artikel ; Online: Imaging Light-Induced Migration of Dislocations in Halide Perovskites with 3D Nanoscale Strain Mapping.

    Orr, Kieran W P / Diao, Jiecheng / Lintangpradipto, Muhammad Naufal / Batey, Darren J / Iqbal, Affan N / Kahmann, Simon / Frohna, Kyle / Dubajic, Milos / Zelewski, Szymon J / Dearle, Alice E / Selby, Thomas A / Li, Peng / Doherty, Tiarnan A S / Hofmann, Stephan / Bakr, Osman M / Robinson, Ian K / Stranks, Samuel D

    Advanced materials (Deerfield Beach, Fla.)

    2023  Band 35, Heft 46, Seite(n) e2305549

    Abstract: In recent years, halide perovskite materials have been used to make high-performance solar cells and light-emitting devices. However, material defects still limit device performance and stability. Here, synchrotron-based Bragg coherent diffraction ... ...

    Abstract In recent years, halide perovskite materials have been used to make high-performance solar cells and light-emitting devices. However, material defects still limit device performance and stability. Here, synchrotron-based Bragg coherent diffraction imaging is used to visualize nanoscale strain fields, such as those local to defects, in halide perovskite microcrystals. Significant strain heterogeneity within MAPbBr
    Sprache Englisch
    Erscheinungsdatum 2023-10-12
    Erscheinungsland Germany
    Dokumenttyp Journal Article
    ZDB-ID 1474949-X
    ISSN 1521-4095 ; 0935-9648
    ISSN (online) 1521-4095
    ISSN 0935-9648
    DOI 10.1002/adma.202305549
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Buch ; Online: Three-dimensional Coherent X-ray Diffraction Imaging via Deep Convolutional Neural Networks

    Wu, Longlong / Yoo, Shinjae / Suzana, Ana F. / Assefa, Tadesse A. / Diao, Jiecheng / Harder, Ross J. / Cha, Wonsuk / Robinson, Ian K.

    2021  

    Abstract: As a critical component of coherent X-ray diffraction imaging (CDI), phase retrieval has been extensively applied in X-ray structural science to recover the 3D morphological information inside measured particles. Despite meeting all the oversampling ... ...

    Abstract As a critical component of coherent X-ray diffraction imaging (CDI), phase retrieval has been extensively applied in X-ray structural science to recover the 3D morphological information inside measured particles. Despite meeting all the oversampling requirements of Sayre and Shannon, current phase retrieval approaches still have trouble achieving a unique inversion of experimental data in the presence of noise. Here, we propose to overcome this limitation by incorporating a 3D Machine Learning (ML) model combining (optional) supervised learning with transfer learning. The trained ML model can rapidly provide an immediate result with high accuracy which could benefit real-time experiments, and the predicted result can be further refined with transfer learning. More significantly, the proposed ML model can be used without any prior training to learn the missing phases of an image based on minimization of an appropriate 'loss function' alone. We demonstrate significantly improved performance with experimental Bragg CDI data over traditional iterative phase retrieval algorithms.
    Schlagwörter Electrical Engineering and Systems Science - Image and Video Processing ; Condensed Matter - Disordered Systems and Neural Networks ; Condensed Matter - Materials Science ; Physics - Applied Physics
    Thema/Rubrik (Code) 006
    Erscheinungsdatum 2021-02-26
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Buch ; Online: Imaging Light-Induced Migration of Dislocations in Halide Perovskites with 3D Nanoscale Strain Mapping

    Orr, Kieran W. P. / Diao, Jiecheng / Lintangpradipto, Muhammad Naufal / Batey, Darren J. / Iqbal, Affan N. / Kahmann, Simon / Frohna, Kyle / Dubajic, Milos / Zelewski, Szymon J. / Dearle, Alice E. / Selby, Thomas A. / Li, Peng / Doherty, Tiarnan A. S. / Hofmann, Stephan / Bakr, Osman M. / Robinson, Ian K. / Stranks, Samuel D.

    2023  

    Abstract: In recent years, halide perovskite materials have been used to make high performance solar cell and light-emitting devices. However, material defects still limit device performance and stability. Here, we use synchrotron-based Bragg Coherent Diffraction ... ...

    Abstract In recent years, halide perovskite materials have been used to make high performance solar cell and light-emitting devices. However, material defects still limit device performance and stability. Here, we use synchrotron-based Bragg Coherent Diffraction Imaging to visualise nanoscale strain fields, such as those local to defects, in halide perovskite microcrystals. We find significant strain heterogeneity within MAPbBr$_{3}$ (MA = CH$_{3}$NH$_{3}^{+}$) crystals in spite of their high optoelectronic quality, and identify both $\langle$100$\rangle$ and $\langle$110$\rangle$ edge dislocations through analysis of their local strain fields. By imaging these defects and strain fields in situ under continuous illumination, we uncover dramatic light-induced dislocation migration across hundreds of nanometres. Further, by selectively studying crystals that are damaged by the X-ray beam, we correlate large dislocation densities and increased nanoscale strains with material degradation and substantially altered optoelectronic properties assessed using photoluminescence microscopy measurements. Our results demonstrate the dynamic nature of extended defects and strain in halide perovskites and their direct impact on device performance and operational stability.

    Comment: Main text and Supplementary Information. Main text: 15 pages, 4 figures. Supplementary Information: 16 pages, 27 figures, 1 table
    Schlagwörter Condensed Matter - Materials Science ; Physics - Chemical Physics
    Thema/Rubrik (Code) 535
    Erscheinungsdatum 2023-04-19
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel ; Online: Multiscale Understanding of Surface Structural Effects on High-Temperature Operational Resiliency of Layered Oxide Cathodes.

    Liu, Xiang / Zhou, Xinwei / Liu, Qiang / Diao, Jiecheng / Zhao, Chen / Li, Luxi / Liu, Yuzi / Xu, Wenqian / Daali, Amine / Harder, Ross / Robinson, Ian K / Dahbi, Mouad / Alami, Jones / Chen, Guohua / Xu, Gui-Liang / Amine, Khalil

    Advanced materials (Deerfield Beach, Fla.)

    2021  Band 34, Heft 4, Seite(n) e2107326

    Abstract: The worldwide energy demand in electric vehicles and the increasing global temperature have called for development of high-energy and long-life lithium-ion batteries (LIBs) with improved high-temperature operational resiliency. However, current attention ...

    Abstract The worldwide energy demand in electric vehicles and the increasing global temperature have called for development of high-energy and long-life lithium-ion batteries (LIBs) with improved high-temperature operational resiliency. However, current attention has been mostly focused on cycling aging at elevated temperature, leaving considerable gaps of knowledge in the failure mechanism, and practical control of abusive calendar aging and thermal runaway that are highly related to the eventual operational lifetime and safety performance of LIBs. Herein, using a combination of various in situ synchrotron X-ray and electron microscopy techniques, a multiscale understanding of surface structure effects involved in regulating the high-temperature operational tolerance of polycrystalline Ni-rich layered cathodes is reported. The results collectively show that an ultraconformal poly(3,4-ethylenedioxythiophene) coating can effectively prevent a LiNi
    Sprache Englisch
    Erscheinungsdatum 2021-12-04
    Erscheinungsland Germany
    Dokumenttyp Journal Article
    ZDB-ID 1474949-X
    ISSN 1521-4095 ; 0935-9648
    ISSN (online) 1521-4095
    ISSN 0935-9648
    DOI 10.1002/adma.202107326
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel ; Online: Origin of structural degradation in Li-rich layered oxide cathode.

    Liu, Tongchao / Liu, Jiajie / Li, Luxi / Yu, Lei / Diao, Jiecheng / Zhou, Tao / Li, Shunning / Dai, Alvin / Zhao, Wenguang / Xu, Shenyang / Ren, Yang / Wang, Liguang / Wu, Tianpin / Qi, Rui / Xiao, Yinguo / Zheng, Jiaxin / Cha, Wonsuk / Harder, Ross / Robinson, Ian /
    Wen, Jianguo / Lu, Jun / Pan, Feng / Amine, Khalil

    Nature

    2022  Band 606, Heft 7913, Seite(n) 305–312

    Abstract: Li- and Mn-rich (LMR) cathode materials that utilize both cation and anion redox can yield substantial increases in battery energy ... ...

    Abstract Li- and Mn-rich (LMR) cathode materials that utilize both cation and anion redox can yield substantial increases in battery energy density
    Sprache Englisch
    Erscheinungsdatum 2022-06-08
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-022-04689-y
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel ; Online: Operando

    Estandarte, Ana Katrina C / Diao, Jiecheng / Llewellyn, Alice V / Jnawali, Anmol / Heenan, Thomas M M / Daemi, Sohrab R / Bailey, Josh J / Cipiccia, Silvia / Batey, Darren / Shi, Xiaowen / Rau, Christoph / Brett, Dan J L / Jervis, Rhodri / Robinson, Ian K / Shearing, Paul R

    ACS nano

    2020  Band 15, Heft 1, Seite(n) 1321–1330

    Abstract: Due to complex degradation mechanisms, disparities between the theoretical and practical capacities of lithium-ion battery cathode materials persist. Specifically, Ni-rich chemistries such as ... ...

    Abstract Due to complex degradation mechanisms, disparities between the theoretical and practical capacities of lithium-ion battery cathode materials persist. Specifically, Ni-rich chemistries such as LiNi
    Sprache Englisch
    Erscheinungsdatum 2020-12-23
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 1936-086X
    ISSN (online) 1936-086X
    DOI 10.1021/acsnano.0c08575
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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